CN116560079A - Method for constructing light sail and light sail - Google Patents

Method for constructing light sail and light sail Download PDF

Info

Publication number
CN116560079A
CN116560079A CN202310833845.8A CN202310833845A CN116560079A CN 116560079 A CN116560079 A CN 116560079A CN 202310833845 A CN202310833845 A CN 202310833845A CN 116560079 A CN116560079 A CN 116560079A
Authority
CN
China
Prior art keywords
super
light
polarized light
sail
handed polarized
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202310833845.8A
Other languages
Chinese (zh)
Other versions
CN116560079B (en
Inventor
罗先刚
张飞
哈颖丽
刘永健
李兰婷
蒲明博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianfu Xinglong Lake Laboratory
Original Assignee
Tianfu Xinglong Lake Laboratory
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianfu Xinglong Lake Laboratory filed Critical Tianfu Xinglong Lake Laboratory
Priority to CN202310833845.8A priority Critical patent/CN116560079B/en
Publication of CN116560079A publication Critical patent/CN116560079A/en
Application granted granted Critical
Publication of CN116560079B publication Critical patent/CN116560079B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00—Cosmonautic vehicles
    • B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
    • B64G1/40—Arrangements or adaptations of propulsion systems
    • B64G1/407—Solar sailing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

Abstract

The application provides a light sail construction method and a light sail, and relates to the technical field of light sails, wherein the surface of the light sail is provided with a super-structured surface structure, and the method comprises the following steps: determining target phase distribution of each position of the super-structure surface structure under the condition of meeting a set condition based on a coordinate system taking a geometric center point of the super-structure surface structure as a coordinate origin; the setting conditions comprise that total reflection is realized for incident left-handed polarized light, and transmission is realized for incident right-handed polarized light to form Bessel beams; acquiring phase values of a plurality of alternative super-structure surface units with different geometric parameters after regulation and control; selecting a target super-constructed surface unit from the alternative super-constructed surface units according to the phase values of the alternative super-constructed surface units; the target super-structured surface unit combination is constructed as a light sail. The optical sail can be adjusted to the phase distribution of the incident left-handed polarized light and the incident right-handed polarized light, so that the optical sail can realize self-stabilizing propulsion and maximum optical power propulsion, and meanwhile, the energy utilization rate is improved.

Description

Method for constructing light sail and light sail
Technical Field
The application relates to the technical field of light sails, in particular to a light sail construction method and a light sail.
Background
The light has wave grain two-image, photons moving at extremely high speed have energy, when photons moving at high speed collide with the surface of an object, part of the energy of the photons is transferred to the object and converted into the forward momentum of the photons, and the light can also be used as a power source of a sail based on the principle similar to a sail using wind as a power source, and the sail-shaped structure for generating pushing force is the light sail by using the light as the power source.
The resistance caused by air is not generated in the space, even the extremely tiny driving force generated by the light sail can be accumulated almost without loss, and the light sail can be continuously and rarely accumulated without an external power source or chemical energy by means of fuel, so that a considerable driving speed is provided for a small spacecraft, and the light sail is considered as a driving technology with huge application potential in the future. In the application process of the light sail, the light sail is required to be stable while maintaining proper thrust to reach the required speed, so how to control the thrust and how to control the posture of the light sail are important points of attention of researchers.
Disclosure of Invention
In order to overcome the defects in the prior art, the purpose of the application is to provide a light sail construction method and a light sail.
In a first aspect, an embodiment of the present application provides a method for constructing a light sail, where the light sail surface has a super-structured surface structure, and the super-structured surface structure is composed of super-structured surface units, and the method includes:
based on a coordinate system taking a geometric center point of the super-structure surface structure as a coordinate origin, determining phase distribution of each position of the super-structure surface structure, which is characterized by meeting a set condition, after regulating and controlling the left-handed polarized lightAnd the phase distribution after the right-handed polarized light is regulated>，/> and />Together forming a target phase profile; the setting conditions comprise that total reflection is realized for incident left-handed polarized light, and transmission is realized for incident right-handed polarized light to form Bessel beams;
acquiring phase values of a plurality of alternative super-structure surface units with different geometric parameters after regulation and control for left-handed polarized light and right-handed polarized light;
selecting target super-structure surface units conforming to the target phase distribution from the candidate super-structure surface units according to the phase values of the candidate super-structure surface units;
the target super-structured surface unit combination is constructed into a light sail.
In one possible implementation, the pairs of positions of the super-structured surface structure are for phase distribution of left-hand polarized lightThe following constraints are satisfied:
has a value of 0 or->And in the constructed coordinate system, the position and phase distribution where the phase distribution is 0 are +.>The positions of (2) are staggered in the X direction and the Y direction;
the phase distribution of each position pair of the super-structured surface structure for right-handed polarized lightThe following constraints are satisfied:
wherein ,for the central wavelength of the incident light, +.>The cone angle of the Bessel beam is shown, and x and y are position coordinates.
In one possible implementation, the super-structure surface unit is composed of an array structure composed of a plurality of dielectric nano-pillars, and the rotation angle of the nano-pillars at each position of the super-structure surface structureAnd a transmission phase in the main axis direction +.>The following constraints are satisfied:
wherein ,cover->Phase position.
In one possible implementation, the super-structured surface unit is composed of an array structure composed of a plurality of dielectric nano-pillars; the geometric parameters of the super-structured surface include one or more of the length L of the long axis, the length W of the short axis, the height H of the dielectric nano-pillars, and the period P of the super-structured surface unit structure.
In one possible implementation manner, the step of obtaining the phase distribution of the plurality of alternative super-structure surface units with different geometric parameters after the phase distribution is regulated for the left-handed polarized light and the phase distribution after the phase distribution is regulated for the right-handed polarized light includes:
and calculating simulation data corresponding to the geometric parameters of different super-structure surface units through simulation software, wherein the simulation data comprise regulated phase values, so as to obtain the regulated phase distribution of each alternative super-structure surface unit for the left-handed polarized light and the regulated phase distribution for the right-handed polarized light.
In one possible implementation manner, the types of the dielectric nano-pillars are m, wherein m is the order of the super-structure surface unit structure, and the phase difference between the m types of the dielectric nano-pillar structures is，/>。
In a second aspect, embodiments of the present application further provide a light sail, where the light sail surface has a super-structured surface structure, and the super-structured surface structure is composed of super-structured surface units;
based on a coordinate system with a geometric center point of the super-structured surface structure as a coordinate origin, under the condition that set conditions are met, representing phase distribution of each position of the super-structured surface structure after regulating and controlling the left-handed polarized lightAnd the phase distribution after the right-handed polarized light is regulated>，/> and />Together forming a target phase profile; the setting conditions include aiming at the enteringThe incident left-handed polarized light is totally reflected and transmitted for the incident right-handed polarized light to form a Bessel beam.
In one possible implementation, the super-structure surface unit is composed of an array structure composed of a plurality of dielectric nano-pillars, and the rotation angle of the nano-pillars at each position of the super-structure surface structureAnd a transmission phase in the main axis direction +.>The following constraints are satisfied:
wherein ,cover->Phase position.
In one possible implementation manner, the types of the dielectric nano-pillars are m, wherein m is the order of the super-structure surface unit structure, and the phase difference between the m types of the dielectric nano-pillar structures is，/>。
In one possible implementation, the super-structured surface unit is composed of an array structure of a plurality of dielectric nano-pillars, the dielectric nano-pillars comprising at least two different long-axis lengths L, short-axis lengths W, heights H, or periods P of the super-structured surface unit structure.
Compared with the prior art, the application has the following beneficial effects:
according to the light sail construction method and the light sail, the super-surface structure is applied to the light sail, and the phase distribution of the super-surface structure after being regulated and controlled for the incident left-handed polarized light and the incident right-handed polarized light is adjusted by setting the parameters of the super-surface unit, so that the light sail can realize self-stable propulsion and has a good propulsion power utilization rate.
In addition, by setting the parameters of the super-structured surface unit, the incident left-handed polarized light and right-handed polarized light can be modulated at the same time under the condition that the super-structured surface is not partitioned, and the energy utilization rate of the light sail is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for constructing a sail according to an embodiment of the present disclosure;
FIG. 2 is a simulation result of an electric field in the XOY plane when left-handed polarized light provided in the embodiments of the present application is incident;
FIG. 3 is a simulation result of an electric field in the XOZ plane when left-handed polarized light provided in the embodiments of the present application is incident;
FIG. 4 is a simulation result of the electric field in the XOY plane when the right-handed polarized light provided in the embodiment of the present application is incident;
FIG. 5 is a simulation result of the electric field in the XOZ plane when the right-handed polarized light provided in the embodiment of the present application is incident;
FIG. 6 is a schematic diagram of a light sail according to an embodiment of the present disclosure under left-hand polarized light;
FIG. 7 is one of the schematic diagrams of the eccentric self-stabilization of the sail provided by the embodiments of the present application;
FIG. 8 is a second schematic illustration of eccentric self-stabilization provided in an embodiment of the present application;
FIG. 9 is a schematic diagram of the sail turning self-stabilizing provided by embodiments of the present application;
FIG. 10 is a diagram of an embodiment of the present applicationIs a phase distribution diagram of (1);
FIG. 11 is a diagram of an embodiment of the present applicationIs a phase distribution diagram of (1);
FIG. 12 is a schematic diagram of a super-structured surface element provided in an embodiment of the present application;
FIG. 13 is a partial schematic view of a light sail provided in an embodiment of the present application.
Icon: 110-dielectric nanopillars.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the inventive product, are merely for convenience of description of the present application and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
It should be noted that, in the case of no conflict, different features in the embodiments of the present application may be combined with each other.
The inventor researches show that the super-structured surface is an artificial layered material with the thickness smaller than the wavelength, has strong light field regulation and control capability and ultra-thin plane characteristics, overcomes the technical limitations of the traditional optical element and the three-dimensional super-structured material, and has been rapidly developed in recent years. The super-structured surface is composed of a two-dimensional planar sub-wavelength structure, and has the capability of flexibly regulating and controlling the wave front amplitude, phase, polarization and other parameters, thus providing a brand-new platform for the design of miniaturized and high-performance micro-nano optical devices. However, the existing super-structured surface can only control the single polarization state, namely Left-circularly polarized light (Left-handed Circularly Polarized Light, LCPL) or Right-circularly polarized light (Right-handed Circularly Polarized Light, RCPL), and can only realize the independent control of thrust or gesture when Yu Guangfan is applied. Although the prior art can modulate left-handed polarized light and right-handed polarized light respectively by staggering two groups of sub-wavelength structure arrays, the energy utilization rate of the light sail is halved, and the background noise of the light sail is obviously enhanced.
In view of the above, the present application provides a method for constructing an optical sail and an optical sail, which can realize self-stable propulsion without partitioning an ultra-structured surface, have a better propulsion power utilization rate, and effectively improve the energy utilization rate of the optical sail. The scheme provided in this embodiment is described in detail below.
Referring to fig. 1, fig. 1 illustrates a flowchart of a method for constructing an optical sail according to the present embodiment, and in this embodiment, the method may include the following steps S100 to S400.
Step S100, determining phase distribution of the position representing the super-structured surface structure after regulating and controlling the left-handed polarized light under the condition of meeting the set condition based on a coordinate system taking the geometric center point of the super-structured surface structure as the origin of coordinatesAnd the phase distribution after the right-handed polarized light is regulated>，/> and />Together forming a target phase profile; the set conditions include achieving total reflection for incident left-handed polarized light and transmission for incident right-handed polarized light to form a Bessel beam.
Specifically, the right-handed polarized light may be right-handed circularly polarized light, and the left-handed polarized light may be left-handed circularly polarized light.
In this embodiment, the super-structured surface needs to achieve a total reflection function when the left-handed polarized light is incident, so as to achieve the maximum power propulsion of the light sail. The maximum non-diffraction distance travelled by the bessel beam is:where r is the diaphragm radius and α is the cone angle of the Bessel beam. At half the maximum diffraction free propagation distance, namely: />When the beam is used, the Bessel beam has stronger focusing intensity. Therefore, when observing the electric field distribution in the XOY plane, a half position of the maximum diffraction-free propagation distance is selected, namely: />Where it is located.
Referring to FIG. 2, FIG. 2 illustrates the present applicationWhen the left-handed polarized light is incident, no light passes through the electric field distribution of the XOY plane in the transmission space, and as shown in fig. 3, no light passes through the electric field distribution of the XOZ plane in the transmission space.
The super-structured surface needs to realize the function of a transmission Bessel beam generator when the right-handed polarized light is incident, thereby realizing the self-stabilizing propulsion function of the light sail. Referring to FIG. 4, FIG. 4 illustrates the present applicationWhen the right-handed polarized light is incident, the focal spot of the bessel beam can be seen in the electric field diagram of the XOY plane in the transmission space, and referring to fig. 5, the long focal depth of bessel focusing can be clearly seen in the electric field diagram of the XOZ plane in the transmission space.
In one implementation of this embodiment, referring to fig. 6, when the light with full left-hand polarization is incident, the light sail surface is totally reflected, and the light sail is pushed to advance at full speed by the maximum optical power F1.
Referring to FIG. 7, FIG. 7 illustrates one of the schematic diagrams of the light sail eccentric self-stabilization of the present application. When the right-handed polarized light is incident on the middle position of the light sail, the super-constructed surface of the light sail can realize the transmission Bessel beam focusing, and the beam of the emergent light is focused towards the middle position, and the super-constructed surface receives a force F opposite to the beam focusing direction 1L and F1R . When the right-hand polarized light irradiates the middle position of the light sail, the light sail receives force F 1L and F1R Component force F in horizontal direction P1L and FP1R The light sails are equal in size and opposite in direction, and stability of the light sails in the horizontal direction can be guaranteed.
Referring to FIG. 8, FIG. 8 illustrates a second schematic view of the eccentric self-stabilization of the sail of the present application. If the incident right-hand polarized light deviates leftwards or the light sail moves rightwards by a certain distance, when the incident right-hand polarized light does not irradiate the middle position of the light sail, the light intensity of one side of the light sail close to the right-hand polarized light is larger than that of one side of the light sail far away from the right-hand polarized light, and the force F born by one side of the light sail close to the right-hand polarized light 2L Greater than the force F exerted on the side of the sail facing away from the right-hand polarized light 2R At this time, the force component F of the force applied by the sail in the horizontal direction P2L And F is equal to P2R Different in magnitude and component force F P2L Greater than component F P2R The whole light sail moves leftwards and returns to the balance position, so that the incident right-handed polarized light can irradiate on the middle position of the light sail, and the eccentric self-stabilization of the light sail is realized.
In another implementation of this embodiment, please refer to fig. 9, fig. 9 illustrates a schematic diagram of the sail inverted self-stabilizing of the present application. When the right-hand polarized light is incident, the light sail can realize the focusing of the transmitted Bessel light beam, at the moment, the light beam of the emergent light is focused towards the middle position of the light sail, and when the light sail is turned anticlockwiseThe angle, the beam is still as it isDirection of incidence, exit angle of left-hand sail beam +.>An exit angle greater than the right-hand sail beam>. Decomposing the generated light force along the normal direction of the sail, wherein F on the right side n3R Greater than F on the left side n3L So the light sail will rotate clockwise and return to the equilibrium position, thus achieving the self-stabilization of the turning of the light sail.
When the incident light consists of left-handed polarized light and right-handed polarized light, the polarization state ratio of the incident light and the position of the incident light on the surface of the light sail can be adjusted according to the actual working condition requirement, so that the balance between the propelling force and the maximum power of the light sail can be effectively adjusted.
wherein , and />The mathematical relationship of (2) is as follows:
wherein ,when the incident light is normal, the angle between the outgoing light of the Bessel beam and the normal is formed.
Step S200, obtaining phase values of a plurality of alternative super-structure surface units with different geometric parameters after regulating and controlling for left-handed polarized light and right-handed polarized light.
In the implementation, the phase values of the plurality of alternative super-structure surface units after the adjustment and control for the left-handed polarized light and the right-handed polarized light can be obtained by changing the geometric parameters of the super-structure surface units, and the obtained phase values are built into a simulation database to store data information, so that the follow-up searching is facilitated.
And step S300, selecting target super-structure surface units conforming to the target phase distribution from the candidate super-structure surface units according to the phase values of the candidate super-structure surface units.
In this embodiment, according to the phase values of each of the alternative super-structure surface units obtained in step S200, a target super-structure surface unit that conforms to the target phase distribution may be searched for in the alternative super-structure surface unit, where the target phase distribution is as similar as possible to the phase distribution of the target super-structure surface unit.
And step S400, constructing the target super-constructed surface unit combination into a light sail.
In this embodiment, the target super-structure surface unit selected in step S300 may be assembled to form a desired light sail.
Based on the design, the method for constructing the optical sail provided by the embodiment of the application uses the super-surface structure on the optical sail, adjusts the phase distribution of the super-surface structure after the super-surface structure is regulated and controlled for the incident left-handed polarized light and the incident right-handed polarized light by setting the parameters of the super-surface unit, enables the optical sail to realize the regulation and control of two polarization states, has high regulation and control efficiency, and can simultaneously realize self-stable propulsion and maximum power propulsion.
Further, each position of the super-structured surface structure aims at the phase distribution of the left-handed polarized lightThe following constraints are satisfied: />Has a value of 0 or->. Referring to FIG. 10, in the coordinate system constructed, the position and phase distribution where the phase distribution is 0 are +.>The positions of (2) are staggered in a checkerboard manner in the X direction and the Y direction. Based on the design, the phase difference of adjacent units in each position of the super-structure surface structure is pi, and interference cancellation can occur, so that the total reflection function can be realized when left-handed polarized light is incident.
Referring to FIG. 11, FIG. 11 illustrates the phase distribution of the position pairs of the super-structure surface structure for right-handed polarized lightIs>The following constraints are satisfied:
wherein ,for the central wavelength of the incident light, α is the cone angle of the Bessel beam, +.>For the position from the current position of the super-structured surface structure to the center point of the super-structured surface, x and y represent position coordinates.
Further, the super-structure surface unit is composed of an array structure composed of a plurality of dielectric nano-pillars 110, and the rotation angles of the nano-pillars at each position of the super-structure surface structureAnd a transmission phase in the main axis direction +.>The following constraints are satisfied:
in the present embodiment, in order to achieve efficient coupling efficiency of self-selected angular momentum and orbital angular momentum of photons, the phase is transmittedShould be covered with->Phase position.
Specifically, the dielectric nano-pillars 110 are anisotropic sub-wavelength structures, and the geometric dimensions and azimuth angles of the dielectric nano-pillars 110 are different. If the anisotropic medium nano column 110 corresponds to the u-v coordinate system, the whole super-structured surface corresponds to the x-y coordinate system, and the included angle between the two coordinate systems is θ. The jones matrix of the anisotropic super-structured surface can be expressed as:
wherein , and />Respectively represent complex amplitudes of the anisotropic structure along the direction of the fast and slow axes thereof, R (+)>) Is a rotation matrix, namely:
thus, the first and second substrates are bonded together,
if the amplitude of the anisotropic structure is 1, and the phase delay introduced along the direction of the fast and slow axes is beta+/-delta/2, wherein beta is the transmission phase, and delta is the phase difference between two principal axes of the nano column in the super surface unit structure.
The complex amplitude of the anisotropic structure along its fast axis can be expressed asThe complex amplitude of the anisotropic structure along its slow axis can be expressed as +.>。
To achieve the phase of both left-handed and right-handed polarized light and />The super-structured surface needs to meet the following requirements:
thus, the jones matrix of the super-structured surface needs to satisfy:
based on eigenvalue and eigenvector in the above formula, the rotation angle of the anisotropic sub-wavelength nano-column structure can be obtainedAnd a transmission phase in the main axis direction +.>The method comprises the following steps:
in the above structure, after finding the dielectric nanopillars 110 meeting the requirements according to step S300, the coordinate values (x, y) and the rotation angles corresponding to each dielectric nanopillar 110 may be determinedThe dielectric nanopillars 110 are arranged to form a desired super surface structure for further application to an optical sail.
Further, referring to fig. 12, the super-structure surface unit is composed of an array structure formed by a plurality of dielectric nano-pillars 110; the geometric parameters of the super-structured surface may include one or more of the long axis length L, the short axis length W, the height H, and the period P of the super-structured surface unit structure of the dielectric nano-pillars 110.
In particular, the phase difference between the two principal axes of the nanopillars in the super surface unit structure should be pi. The period P < λ of the super-structured surface unit structure is the center wavelength of the incident light.
Preferably, the method comprises the steps of,and->. Where n is the refractive index of the dielectric nanopillar 110, and the refractive index is the attribute of the nanopillar material itself, and the refractive indexes are different at different incident wavelengths.
In one possible implementation, this step is accomplished using an existing electromagnetic simulation software platform. Referring to fig. 13, by changing the geometric parameters of the dielectric nano-pillars 110 and performing scanning parameters in combination with electromagnetic simulation software, corresponding simulation data can be obtained, the length L of the major axis and the length W of the minor axis of the dielectric nano-pillars 110 are different, the electromagnetic response characteristics are different, and each dielectric nano-pillar 11 can be obtained by performing scanning by electromagnetic calculation software0, and finding out the medium nano-pillars 110 meeting the simulation requirement according to the response characteristic and simulation data of each medium nano-pillar 110, and according to the coordinate position corresponding to each medium nano-pillar 110Rotation angle +.>The nano-pillars are arranged to form a super-surface structure which can be used as a light sail.
In one possible implementation manner, when obtaining the phase distribution of the plurality of alternative super-structure surface units with different geometric parameters after the adjustment and control of the left-handed polarized light and the phase distribution of the plurality of alternative super-structure surface units after the adjustment and control of the right-handed polarized light, calculating phase adjustment simulation data corresponding to the geometric parameters of the plurality of alternative super-structure surface units through simulation software, and obtaining the phase distribution of each alternative super-structure surface unit after the adjustment and control of the left-handed polarized light and the phase distribution after the adjustment and control of the right-handed polarized light. That is, in this embodiment, a database may be constructed in advance by simulation software, where the database includes the phase distribution of the positions of the super-structured surface obtained by adjusting the geometric parameters of the super-structured surface unit for the incident right-handed polarized light and for the incident left-handed polarized light in the coordinate system described in step S110. Illustratively, embodiments of the present application may employ time domain simulation.
Further, the types of the dielectric nano-pillars 110 are m, where m is the order of the super-structured surface unit structure, and the phase difference between the m dielectric nano-pillars 110 is，/>。
Preferably, a phase difference between a long axis of the dielectric nanopillar 110 and a short axis of the dielectric nanopillar 110 is pi.
In this embodiment, the phase difference between the long axis of the dielectric nanopillar 110 and the short axis of the dielectric nanopillar 110 is pi.
The embodiment of the application also provides a light sail, wherein the light sail surface is provided with a super-structured surface structure, and the super-structured surface structure is composed of super-structured surface units.
Based on a coordinate system with a geometric center point of the super-structured surface structure as a coordinate origin, characterizing phase distribution of each position of the super-structured surface structure after regulating and controlling left-handed polarized light under a set conditionAnd the phase distribution after the right-handed polarized light is regulated>，/> and />Together forming a target phase profile; the set conditions include achieving total reflection for incident left-handed polarized light and transmission for incident right-handed polarized light to form a Bessel beam.
In this embodiment, the super-structured surface needs to achieve a total reflection function when the left-handed polarized light is incident, so as to achieve the maximum power propulsion of the light sail. The super-structured surface needs to realize the function of a transmission Bessel beam generator when the right-handed polarized light is incident, thereby realizing the self-stabilizing propulsion function of the light sail.
Further, the super-structure surface unit is composed of an array structure composed of a plurality of dielectric nano-pillars 110, and the rotation angle of the dielectric nano-pillars 110 at each position of the super-structure surface structureTransmission phase along the main axis directionThe following constraints are satisfied:
wherein, to achieve efficient coupling efficiency of the self-selected angular momentum and orbital angular momentum of the photons, the phase is transmittedShould be covered with->Phase position.
In this embodiment, when the light sail is manufactured, a dielectric layer may be first manufactured on a silicon wafer substrate, then an electron beam photoresist is spin-coated on the dielectric layer, a designed pattern is written and developed, and finally a super-structured surface pattern may be written in the dielectric layer by using a reactive ion beam etching process, thereby obtaining a required super-structured surface structure.
Further, the types of the dielectric nano-pillars 110 may be m, where m is the order of the super-structured surface unit structure, and the phase difference between the m dielectric nano-pillars 110 is，/>。
Further, referring to fig. 10 again, the super-structure surface unit may be composed of an array structure formed by a plurality of dielectric nano-pillars 110, where the dielectric nano-pillars 110 include at least two different long-axis lengths L, short-axis lengths W, heights H, or periods P of the super-structure surface unit structure.
In one possible embodiment, the dielectric nanopillars 110 may be disposed on a substrate, which may be circular, quadrilateral, hexagonal, octagonal, and decahexagonal, without limitation herein. When the substrate is quadrilateral, the length of the quadrilateral substrate is P x Width P y . Illustratively, the super-structured surface sheetThe period P of the meta structure may be P x =P y The height of the dielectric nano-pillars 110 may be h=600nm=420 nm, and at this time, by changing the rotation angles of the plurality of dielectric nano-pillars 110, a super-structured surface structure can be formed, so as to be further applied to the optical sail.
Further, the material of the dielectric nanopillar 110 may include one or more of silicon, titanium dioxide, and silicon nitride.
Specifically, the material selection of the dielectric nanopillars 110 is dependent on the wavelength of the incident light, and the dielectric constants and thus the refractive indices of the dielectric nanopillars 110 of different materials are different. When the wavelength of the incident light is different, the electromagnetic response characteristics of the dielectric nanopillars 110 of different materials are different, and the efficiency of the dielectric nanopillars 110 is higher at a specific wavelength, however, if the wavelength is changed, the efficiency is significantly reduced. Thus, the selection of the dielectric nanopillar 110 material should be made after the wavelength of the incident light is selected, in combination with electromagnetic simulation.
In summary, according to the method for constructing the optical sail and the optical sail provided by the embodiments of the present application, the optical sail surface has the super-structure surface structure, the geometric center point of the super-structure surface structure is used as the origin of coordinates to establish a coordinate system, and the target phase distribution meeting the set condition is determined; acquiring phase values of a plurality of alternative super-structure surface units with different geometric parameters, which are regulated and controlled for left-handed polarized light and right-handed polarized light; and selecting target super-constructed surface units conforming to the target phase distribution from the alternative super-constructed surface units according to the phase values of the alternative super-constructed surface units, so that the target super-constructed surface units are combined and constructed into the light sail, the light sail can realize self-stable propulsion, the self-stable propulsion power utilization rate is high, and the energy utilization rate of the light sail is effectively improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely various embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A method of light sail construction for constructing a light sail, the light sail surface having a super-structured surface structure comprised of super-structured surface elements, the method comprising:
based on a coordinate system taking a geometric center point of the super-structure surface structure as a coordinate origin, determining phase distribution of each position of the super-structure surface structure, which is characterized by meeting a set condition, after regulating and controlling the left-handed polarized lightAnd the phase distribution after the right-handed polarized light is regulated>，/> and />Together forming a target phase profile; the setting conditions includeRealizing total reflection for incident left-handed polarized light and realizing transmission for incident right-handed polarized light to form Bessel beams;
acquiring phase values of a plurality of alternative super-structure surface units with different geometric parameters after regulation and control for left-handed polarized light and right-handed polarized light;
selecting target super-structure surface units conforming to the target phase distribution from the candidate super-structure surface units according to the phase values of the candidate super-structure surface units;
the target super-structured surface unit combination is constructed into a light sail.
2. The method of claim 1, wherein each position pair of the super-structured surface structure is for a phase distribution of left-hand polarized lightThe following constraints are satisfied:
has a value of 0 or->And in the constructed coordinate system, the position and phase distribution where the phase distribution is 0 are +.>The positions of (2) are staggered in the X direction and the Y direction;
the phase distribution of each position pair of the super-structured surface structure for right-handed polarized lightThe following constraints are satisfied:
wherein ,the center wavelength of the incident light is alpha, cone angle of the Bessel beam, and x and y are position coordinates.
3. The method of claim 2, wherein the super-structure surface unit is composed of an array structure of a plurality of dielectric nano-pillars, and the rotation angle of the nano-pillars at each position of the super-structure surface structureAnd a transmission phase in the main axis direction +.>The following constraints are satisfied:
wherein ,cover->Phase position.
4. The method of claim 1, wherein the super-structured surface unit is comprised of an array structure of a plurality of dielectric nanopillars; the geometric parameters of the super-structured surface include one or more of the length L of the long axis, the length W of the short axis, the height H of the dielectric nano-pillars, and the period P of the super-structured surface unit structure.
5. The method of claim 1, wherein the step of obtaining the phase distribution of the plurality of alternative super-structure surface units with different geometric parameters after the conditioning for the left-handed polarized light and the phase distribution after the conditioning for the right-handed polarized light comprises:
and calculating phase adjustment simulation data corresponding to the geometric parameters of different super-structure surface units through simulation software to obtain phase distribution of each alternative super-structure surface unit regulated and controlled for the left-handed polarized light and phase distribution regulated and controlled for the right-handed polarized light.
6. The method of claim 3, wherein the dielectric nanopillar species is m, where m is the order of the super-structured surface unit structure, and the phase difference between the m dielectric nanopillar structures is，/>。
7. A light sail, characterized in that the light sail surface has a super-structured surface structure, the super-structured surface structure being comprised of super-structured surface units;
based on a coordinate system with a geometric center point of the super-structure surface structure as a coordinate origin, representing phase distribution of each position of the super-structure surface structure after regulating and controlling the left-handed polarized light under the condition of meeting a set conditionAnd the phase distribution after the right-handed polarized light is regulated>，/> and />Together formA target phase distribution; the set conditions include achieving total reflection for incident left-handed polarized light and transmission for incident right-handed polarized light to form a Bessel beam.
8. The light sail of claim 7, wherein the super-structure surface unit is comprised of an array of dielectric nano-pillars, the nano-pillars being rotated at various locations on the super-structure surface structureAnd a transmission phase in the main axis direction +.>The following constraints are satisfied:
wherein ,cover->Phase position.
9. The light sail of claim 7, wherein the dielectric nanopillar species is m, where m is the order of the super-structured surface unit structures, and the phase difference between the m dielectric nanopillar structures is，/>。
10. The light sail of claim 7, wherein the super-structured surface elements are comprised of an array of a plurality of dielectric nano-pillars, the dielectric nano-pillars comprising at least two different long axis lengths L, short axis lengths W, heights H, or periods P of super-structured surface element structures.
CN202310833845.8A 2023-07-10 2023-07-10 Method for constructing light sail and light sail Active CN116560079B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310833845.8A CN116560079B (en) 2023-07-10 2023-07-10 Method for constructing light sail and light sail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310833845.8A CN116560079B (en) 2023-07-10 2023-07-10 Method for constructing light sail and light sail

Publications (2)

Publication Number Publication Date
CN116560079A true CN116560079A (en) 2023-08-08
CN116560079B CN116560079B (en) 2023-09-08

Family

ID=87486551

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310833845.8A Active CN116560079B (en) 2023-07-10 2023-07-10 Method for constructing light sail and light sail

Country Status (1)

Country Link
CN (1) CN116560079B (en)

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030010870A1 (en) * 2001-07-06 2003-01-16 Chafer Charles M. Space craft and methods for space travel
EP1436196A1 (en) * 2001-09-18 2004-07-14 Eikos, Inc. Esd coatings for use with spacecraft
EP2231301A1 (en) * 2007-12-06 2010-09-29 Munro Technology Ltd Nanometre fibres
CN101927836A (en) * 2009-12-02 2010-12-29 文华东 Aerospace vehicle laser light sail engine
US20150314894A1 (en) * 2013-05-01 2015-11-05 Mohammad A. Mazed Heat shield for a spacecraft
CN106114913A (en) * 2016-08-12 2016-11-16 上海卫星工程研究所 A kind of employing damages, without matter, the deep space probe that magneto-optic double sail combination advances
US20170047889A1 (en) * 2015-08-10 2017-02-16 California Institute Of Technology Lightweight Structures for Enhancing the Thermal Emissivity of Surfaces
CN106542121A (en) * 2016-11-03 2017-03-29 上海卫星工程研究所 Magneto-optic double sail compound propulsion system and method are damaged without matter for survey of deep space
WO2018118984A1 (en) * 2016-12-20 2018-06-28 President And Fellows Of Harvard College Ultra-compact, aberration corrected, visible chiral spectrometer with meta-lenses
CN108425170A (en) * 2004-11-09 2018-08-21 得克萨斯大学体系董事会 The manufacture and application of nano-fibre yams, band and plate
CN108490603A (en) * 2018-03-09 2018-09-04 北京理工大学 The method for generating vector beam based on the super clever surface of transmissive medium
CN110764190A (en) * 2019-10-25 2020-02-07 华南理工大学 System and method for adjusting micro-nano optical fiber end face deflection by changing input laser polarization
CN110954974A (en) * 2019-11-27 2020-04-03 中国科学院光电技术研究所 Full Stokes infrared polarization imager based on super surface
WO2021066643A1 (en) * 2019-09-30 2021-04-08 Technische Universiteit Delft High-selectivity dry release of dielectric structures
CN113138043A (en) * 2020-01-16 2021-07-20 清华大学 Optical pressure measuring device and optical pressure measuring method
CN115180178A (en) * 2022-07-26 2022-10-14 北京航空航天大学 Solar sail based on distributed configuration
CN116093628A (en) * 2022-12-29 2023-05-09 天府兴隆湖实验室 Super-surface array structure based on irregular subarrays
CN116540406A (en) * 2023-07-04 2023-08-04 天府兴隆湖实验室 Method for constructing light sail and light sail

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030010870A1 (en) * 2001-07-06 2003-01-16 Chafer Charles M. Space craft and methods for space travel
EP1436196A1 (en) * 2001-09-18 2004-07-14 Eikos, Inc. Esd coatings for use with spacecraft
CN108425170A (en) * 2004-11-09 2018-08-21 得克萨斯大学体系董事会 The manufacture and application of nano-fibre yams, band and plate
EP2231301A1 (en) * 2007-12-06 2010-09-29 Munro Technology Ltd Nanometre fibres
CN101927836A (en) * 2009-12-02 2010-12-29 文华东 Aerospace vehicle laser light sail engine
US20150314894A1 (en) * 2013-05-01 2015-11-05 Mohammad A. Mazed Heat shield for a spacecraft
US20170047889A1 (en) * 2015-08-10 2017-02-16 California Institute Of Technology Lightweight Structures for Enhancing the Thermal Emissivity of Surfaces
CN106114913A (en) * 2016-08-12 2016-11-16 上海卫星工程研究所 A kind of employing damages, without matter, the deep space probe that magneto-optic double sail combination advances
CN106542121A (en) * 2016-11-03 2017-03-29 上海卫星工程研究所 Magneto-optic double sail compound propulsion system and method are damaged without matter for survey of deep space
WO2018118984A1 (en) * 2016-12-20 2018-06-28 President And Fellows Of Harvard College Ultra-compact, aberration corrected, visible chiral spectrometer with meta-lenses
CN108490603A (en) * 2018-03-09 2018-09-04 北京理工大学 The method for generating vector beam based on the super clever surface of transmissive medium
WO2021066643A1 (en) * 2019-09-30 2021-04-08 Technische Universiteit Delft High-selectivity dry release of dielectric structures
CN110764190A (en) * 2019-10-25 2020-02-07 华南理工大学 System and method for adjusting micro-nano optical fiber end face deflection by changing input laser polarization
CN110954974A (en) * 2019-11-27 2020-04-03 中国科学院光电技术研究所 Full Stokes infrared polarization imager based on super surface
CN113138043A (en) * 2020-01-16 2021-07-20 清华大学 Optical pressure measuring device and optical pressure measuring method
CN115180178A (en) * 2022-07-26 2022-10-14 北京航空航天大学 Solar sail based on distributed configuration
CN116093628A (en) * 2022-12-29 2023-05-09 天府兴隆湖实验室 Super-surface array structure based on irregular subarrays
CN116540406A (en) * 2023-07-04 2023-08-04 天府兴隆湖实验室 Method for constructing light sail and light sail

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
ACHOURI, K 等: "Metasurface Solar Sail", IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION & USNC/URSI NATIONAL RADIO SCIENCE MEETING, pages 1057 - 1058 *
MOHAMMAD MAHDI SALARY 等: "Photonic Metasurfaces as Relativistic Light Sails for Doppler-Broadened Stable Beam-Riding and Radiative Cooling", LASER PHOTONICS REVIEW, pages 1 - 19 *
XIANGANG GUO: "Multiscale Optical Field Manipulation via Planar Digital Optics", ACS PHOTONICS, pages 2116 - 2127 *
张飞 等: "光学超构表面中的复合相位调控", 物理, pages 300 - 307 *
陈健 等: "太阳帆推进技术研究现状及其关键技术分析", 火箭推进, pages 37 - 43 *

Also Published As

Publication number Publication date
CN116560079B (en) 2023-09-08

Similar Documents

Publication Publication Date Title
CN110426783B (en) Multifunctional super surface based on micro-nano half-wave plate
CN108885354B (en) Apparatus for forming field strength patterns in the near zone from incident electromagnetic waves
CN109270606B (en) Method for constructing dynamic multifocal super lens based on medium and graphene
US20190137793A1 (en) Broadband electromagnetic wave phase modulating method and meta surface sub-wavelength structure
CN112147721B (en) Polarization order adjustable and continuously zooming cylindrical vector beam lens and construction method
CN105870604A (en) Array antenna for generating microwave orbital angular momentum based on phase gradient super-surface
CN107146649B (en) A kind of device and method manipulating low refractive index dielectric nanoparticle
CN112601990A (en) Diffraction grating comprising a two-material structure
CN116540406B (en) Method for constructing light sail and light sail
CN109301490A (en) A kind of super surface of geometric phase generated applied to broadband multimode vortex wave beam
CN108363127B (en) Surface plasmon bifocal lens
CN113258428A (en) Method for carrying out multi-dimensional light field regulation and control on surface emitting laser by using superlens
CN116560079B (en) Method for constructing light sail and light sail
CN102967928B (en) The production method of the tight focal beam spot of a kind of post polarization vector light beam and device
CN107728236A (en) Produce super the structure surface element and production method of nanoscale longitudinal direction hot spot chain
CN110082906B (en) Optical phased array based on incomplete asymmetric AWG
CN111190278B (en) Method for regulating and controlling light beam coherence by utilizing artificial microstructure
CN111999901A (en) Super-surface axial cone device for generating multiband achromatic Bessel beams
CN111948806A (en) Design and implementation method of super-structure surface rainbow system
CN1418322A (en) ultra high resolution imaging devices
CN214470399U (en) Full-polarization stealth carpet based on graphene phase gradient super-surface
CN113504642A (en) Method for constructing distribution of tightly focused light field with multiple hollows
Firuzi et al. Long-range optical pulling force device based on vortex beams and transformation optics
CN115453670B (en) Reflective orthogonal circular polarization double-focusing superlens and preparation method thereof
Huang et al. Switchable terahertz orbital angular momentum Bessel beams based on spin-decoupled multifunctional reflective metasurfaces

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant