CN108562424A - Time response measuring device and system - Google Patents
Time response measuring device and system Download PDFInfo
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- CN108562424A CN108562424A CN201810339260.XA CN201810339260A CN108562424A CN 108562424 A CN108562424 A CN 108562424A CN 201810339260 A CN201810339260 A CN 201810339260A CN 108562424 A CN108562424 A CN 108562424A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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Abstract
A kind of time response measuring device of offer of the embodiment of the present invention and system.Described device includes：Isochronous controller, laser, fiber linear array and computing device.Isochronous controller is used to control the working condition of laser and streak camera by two pulse signals.Laser is used to export pulse laser according to the control of isochronous controller.Fiber linear array includes the different optical fiber of more root long degree, and fiber linear array is used for transmission pulse laser.The pulse laser of laser output exposes to streak camera by fiber linear array, and streak camera is for obtaining scan image.Wherein, scan image includes the laser point formed by pulse laser.Computing device is used to be calculated the time response of streak camera according to the length difference between the distance in the horizontal direction of two laser points in scan image and corresponding two optical fiber.Thereby, it is possible to the time responses to streak camera to measure.
Description
Technical field
The present invention relates to high speed photography fields, in particular to a kind of time response measuring device and system.
Background technology
Streak camera is also known as image converter tube scanning camera, for detecting and recording ultrafast phenomena.Streak camera is existed using slit
One-dimensional line image is intercepted in target picture, and continuously records its process changed over time, because of the temporal resolution of its superelevation and right
The continuous recording ability of event becomes a kind of important diagnostic device in high speed photography, be widely used in detonation physics,
The research fields such as Shock wave physics, accelerator physics, inertial confinement fusion (ICF) and high-order harmonics spectrum.
The time response of streak camera is the important indicator of streak camera, not only determines the standard of experimental data in time
Exactness has an effect on the characterization of relative light intensity.During streak camera manufacture and use, it is required to the time to streak camera
Characteristic is demarcated, to ensure that experimental data is accurately credible.
Invention content
In order to overcome above-mentioned deficiency in the prior art, the embodiment of the present invention to be designed to provide a kind of time response survey
Measure apparatus and system, the corresponding time response of streak camera different stalls can be measured, especially to 10ns and with
On the time response of gear accurately measured, avoid when using etalon standardization since pulse spacing too short-range missile causes nothing
Method accurately measures the case where time response.
The embodiment of the present invention provides a kind of time response measuring device, and described device includes：Isochronous controller, laser,
Fiber linear array and computing device, wherein the isochronous controller is connect with streak camera and the laser, the computing device
It is connect with the streak camera,
The isochronous controller is used to control the work of the laser and the streak camera by two pulse signals
State；
The laser is used to export pulse laser according to the control of the isochronous controller, wherein the fiber linear array
And the streak camera is arranged in the light path of the pulse laser；
The fiber linear array includes the different optical fiber of more root long degree, and the fiber linear array is used for transmission the pulse laser；
The pulse laser of the laser output exposes to the streak camera, the striped phase by the fiber linear array
Machine is for obtaining scan image, wherein the scan image includes the laser point formed by pulse laser；
The computing device is used for according to the distance in the horizontal direction of two laser points in the scan image and corresponding
The time response of the streak camera is calculated in length difference between two optical fiber.
Optionally, in embodiments of the present invention, the fiber linear array further includes the input panel being oppositely arranged and output face
Plate,
Every optical fiber includes input terminal and output end；
The input terminal of multifiber is fixed in the input panel, and the output end of multifiber is fixed on institute
It states on output slab.
Optionally, in embodiments of the present invention, the input panel is arranged in the fiber linear array close to the laser
Side, the output slab is arranged in the fiber linear array close to the side of the streak camera.
Optionally, in embodiments of the present invention, the input terminal of multifiber presets circle the one of the input panel
Within the scope of shape, the output end of multifiber is in the distribution of line shape on the output slab.
Optionally, in embodiments of the present invention, the output end of multifiber is in horizontal line on the output slab
Shape or vertical the distribution of line shape.
Optionally, in embodiments of the present invention, the length of every optical fiber is along linear extending direction preset length incremented by successively.
Optionally, in embodiments of the present invention, described device further includes beam expanding lens,
The beam expanding lens is arranged between the laser and the fiber linear array, the arteries and veins for exporting the laser
Impulse light is expanded, so that the input of the pulse laser uniform irradiation after expanding to the multifiber of the fiber linear array
End.
Optionally, in embodiments of the present invention, described device further includes a static housing, and the static housing includes installation
Slot,
The mounting groove includes two card slots being oppositely arranged, and a card slot is used for fixing the input panel, another card slot
In the fixation output slab, with the fixation fiber linear array.
Optionally, in embodiments of the present invention, the static housing further includes an at least storage tank, the fiber linear array
Quantity is at least one, and the storage tank is for the fixed fiber linear array being currently not used by.
The embodiment of the present invention also provides a kind of time response measuring system, the system comprises streak camera and it is described when
Between characteristic measuring device, described device is used to measure the time response of the streak camera.
In terms of existing technologies, the invention has the advantages that：
A kind of time response measuring device of offer of the embodiment of the present invention and system.Described device is for measuring streak camera
Time response.Described device includes isochronous controller, laser, fiber linear array and computing device.The isochronous controller and institute
Laser and streak camera connection are stated, controls whether the laser sends out pulse laser respectively for passing through two pulse signals
And the working condition of the streak camera.Wherein, the fiber linear array and streak camera are arranged in the light path of pulse laser.Institute
It includes the different optical fiber of more root long degree to state fiber linear array, is used for transmission the pulse laser that the laser is sent out.The striped phase
Machine obtains scan image, and the scan image includes the laser point formed by the pulse laser that the fiber linear array exports.It is described
Computing device is according to the length between the distance in the horizontal direction of two laser points in the scan image and corresponding two optical fiber
Degree mathematic interpolation obtains the time response of the streak camera.As a result, to the corresponding time response of streak camera different stalls into
Row measures, and is especially accurately measured the time response of the gear of 10ns or more, avoids using etalon standardization
When due to too short the case where leading to not accurately measure time response in pulse spacing.
To enable the above objects, features, and advantages of invention to be clearer and more comprehensible, present pre-ferred embodiments cited below particularly, and
The appended attached drawing of cooperation, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is one of the schematic diagram of time response measuring system provided in an embodiment of the present invention.
Fig. 2 is the schematic diagram of fiber linear array in Fig. 1.
Fig. 3 is the schematic diagram of static housing provided in an embodiment of the present invention.
Fig. 4 is scan image provided in an embodiment of the present invention.
Fig. 5 is the two of the schematic diagram of time response measuring system provided in an embodiment of the present invention.
Icon：10- time response measuring systems；110- isochronous controllers；120- lasers；130- beam expanding lens；140- light
Fine linear array；141- optical fiber；1411- input terminals；1412- output ends；143- input panel；144- output slabs；150- calculating is set
It is standby；160- static housings；161- mounting grooves；210- streak cameras.
Specific implementation mode
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment of the present invention, people in the art
The every other embodiment that member is obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is instruction or implies that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is instruction or implies relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" refers to only that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Below in conjunction with the accompanying drawings, it elaborates to some embodiments of the present invention.In the absence of conflict, following
Feature in embodiment and embodiment can be combined with each other.
Streak camera usually has multiple gears, and the corresponding different record time is to realize examining for different time scales phenomenon
It is disconnected.According to the different model of streak camera, the record time of streak camera can cover the time range of 0.2ns~100ns.For
Gear of the time less than 10ns is recorded, its time response can be demarcated by using etalon standardization.It is for the record time
The gear of 10ns or more, the optical pulse interval generated due to etalon is too short (generally hundreds of ps), at present can't be right
The gear of the part carries out the calibration of time response.However, the gear that the record time is 10ns or more is in detonation physics, impact
Using at most in the experimental studies such as wave physics, accelerator physics and inertial confinement fusion (ICF), the mark of its time response is studied
The method of determining is of great significance.
Fig. 1 is please referred to, Fig. 1 is one of the schematic diagram of time response measuring system 10 provided in an embodiment of the present invention.It is described
Time response measuring system 10 includes time response measuring device and streak camera 210.Described device is used for the striped phase
The time response of the different stalls of machine 210 measures, and it is accurate especially to be carried out to the time response of the gear of 10ns or more
It measures, avoids when using etalon standardization due to too short the case where leading to not accurately measure time response in pulse spacing.
Fig. 1 and Fig. 2 is please referred to, Fig. 2 is the schematic diagram of fiber linear array 140 in Fig. 1.The time response measuring device can be with
Including isochronous controller 110, laser 120, fiber linear array 140 and computing device 150.Wherein, the isochronous controller 110 with
The streak camera 210 and the laser 120 connect, and the computing device 150 is connect with the streak camera 210.It is described
Computing device 150 may be, but not limited to, desktop computer, tablet computer etc..The laser 120 can be visible light wave range
Laser has external trigger and single pulse output function.
In the present embodiment, the isochronous controller 110 is for sending two pulse signals, and pulse signal is for making all the way
The laser 120 exports pulse laser, and another way pulse signal is used to that the streak camera 210 to be made to enter working condition, with
Obtain scan image.The work to the laser 120 is realized by the two pulse signals of the isochronous controller 110 as a result,
Make the control of state and the working condition of the streak camera 210.
In the present embodiment, the light path in the pulse laser is arranged in the fiber linear array 140 and the streak camera 210
On, expose to the streak camera so that the pulse laser that the laser 120 is sent out can be transmitted through the fiber linear array 140
210, so that the streak camera 210 obtains scan image by the standard lens of itself.Wherein, the scan image includes institute
State the laser point that the pulse laser of the output of fiber linear array 140 is formed.The fiber linear array 140 includes the different optical fiber of more root long degree
141.That is, when the pulse laser is exported from the fiber linear array 140, the streak camera 210 can record more
A laser point, wherein the pulse laser that an optical fiber 141 exports corresponds to a laser point.Optionally, it is deposited between two pulse signals
In relative time delay, with ensure the streak camera 210 can obtain include all laser points scan image.
In the present embodiment, the computing device 150 is according to the level between arbitrary two laser point in the scan image
The time that the streak camera 210 is calculated in the length difference of two optical fiber 141 of distance and the two corresponding laser points is special
Property.Optionally, the difference is indicated by the time, the horizontal direction of the scan image is time shaft, therefore basis
Two laser points distance in the horizontal direction and it can be obtained the streak camera 210 with the difference that the time indicates and surveyed currently
The sweep speed of gear is tried, and then obtains scan non-linearity degree, thus obtains the streak camera 210 in currently test gear
Time response.Wherein it is possible to which pulse laser is indicated the difference by the time for the optical fiber 141 that length is the difference.
Optionally, the port of the optical fiber 141 is standard fiber interface, for example, LC interfaces.Thus it is convenient for passing through standard
Optical fiber interface measures different 141 corresponding pulse laser transmission times of optical fiber, to obtain the corresponding used time between different optical fiber 141
Between the difference that indicates.
Referring once again to Fig. 2, the fiber linear array 140 can also include the input panel 143 being oppositely arranged and output face
Plate 144.Every optical fiber 141 includes input terminal 1411 and output end 1412.Every optical fiber 141 in the fiber linear array 140
The input terminal 1411 is each attached in the input panel 143, and the output end 1412 of every optical fiber 141 is each attached to institute
It states on output slab 144.Multifiber 141 is fixed by the input panel 143 and output slab 144 as a result,.
In the present embodiment, the input panel 143 is arranged in the fiber linear array 140 close to the laser 120
Side, the output slab 144 are arranged in the fiber linear array 140 close to the side of the streak camera 210.It is set by above-mentioned
It sets, the pulse laser exposes to the streak camera after the injection of the laser 120 by the fiber linear array 140
210。
In the present embodiment, the input terminal 1411 of multifiber 141 presets circle the one of the input panel 143
In range, the output end 1412 of multifiber 141 is linearly distributed on the output slab 144.Thus, it is possible to the greatest extent may be used
It can guarantee that every optical fiber 141 can receive the pulse laser that the laser 120 is sent out.Since the streak camera 210 has
Slit, therefore the output end 1412 of multifiber 141 is linearly distributed, it is obtained convenient for the streak camera 210 multiple
Laser point.
Optionally, as long as can ensure that every optical fiber 141 can receive the pulse that the laser 120 is sent out and swash as far as possible
Light, multiple input terminals 1411 can be in Arbitrary distribution in the input panel 143.In a kind of embodiment party of the present embodiment
In formula, the rounded distribution in the input panel 143 of multiple input terminals 1411 can reduce and be wanted to injecting spot size
It asks, better ensures that the pulse laser that laser 120 is sent out can be received by every optical fiber 141.
Optionally, be horizontally oriented due to the slit for the streak camera 210 having, the slit of streak camera 210 be
Vertical direction, accordingly, the output end 1412 of multifiber 141 on the output slab 144 in horizontal linear or
Vertical the distribution of line shape.
Fig. 3 is please referred to, Fig. 3 is the schematic diagram of static housing 160 provided in an embodiment of the present invention.The fiber linear array 140
In the length of every optical fiber 141 can be according to the linear extending direction default length incremented by successively on the output slab 144
Δ L is spent, accordingly, the output time of each laser point delays Δ t successively.As shown in figure 3, having optical fiber successively by linear extending direction
1, the length of optical fiber 2, optical fiber 3 ... ..., optical fiber 1 is L0, and the length of optical fiber 2 is L0+ Δ L1, and the length of optical fiber 3 is L0+2 Δs
L1 ... ....Wherein, Δ L1 is preset length.The time difference Δ t that adjacent optical fiber 141 can be measured in advance is calculating the time
When characteristic, distance that can directly according to the two laser points corresponding time difference measured in advance and in the horizontal direction can obtain
To time response, the complexity of calculating is reduced.In an embodiment of the present embodiment, the pulsewidth of laser 120 is small
In 0.1 Δ t.
In the embodiment of the present embodiment, due to that can not ensure optical fiber in same fiber linear array 140 in the production process
141 length difference is accurate Δ L, therefore can be demarcated in advance to time difference Δ t, to ensure to striped phase
The data that the time response of machine 210 obtains when measuring are accurate and reliable.
Fig. 4 is please referred to, Fig. 4 is scan image provided in an embodiment of the present invention.Fig. 4 is to measure streak camera 210
The image obtained when the time response of 10ns gears, horizontal direction is time-axis direction in figure.The Δ of the fiber linear array 140 used
T is 1ns, and the pulse width of laser 120 is 150ps.The distance, delta S of adjacent laser point in the horizontal direction represents item in figure
Line camera 210 sweeps speed in Δ t, then in the area sweep fast vi=Δ Si/Δti.Obtaining each adjacent laser point part
Sweep fast viAfterwards, the accurate of the scanning gear can be calculated and sweep speed and scan non-linearity degree.
Fig. 5 is please referred to, Fig. 5 is the two of the schematic diagram of time response measuring system 10 provided in an embodiment of the present invention.It is described
Time response measuring device can also include beam expanding lens 130.The beam expanding lens 130 is arranged in the laser 120 and the light
Between fine linear array 140, the pulse laser for exporting the laser 120 carries out expanding processing, so that the pulse after expanding
Laser uniform irradiation to the multifiber 141 of the fiber linear array 140 the input terminal 1411, that is to say, that it is described to expand
The hot spot that mirror 130 exports, which obtains size, can cover the input terminal 1411 of all optical fiber 141 in fiber linear array 140.By described
Beam expanding lens 130 may further ensure that all optical fiber 141 can receive the pulse laser, to ensure the time
The accuracy of feature measurement.Also, by by the 1411 rounded distribution of multiple input terminals, more can guarantee measurement effect.
Referring once again to Fig. 3, the time response measuring device can also include static housing 160.The static housing
160 include mounting groove 161, and the mounting groove 161 includes two card slots being oppositely arranged.One of card slot is described defeated for fixing
Enter panel 143, thus another card slot is fixed the fiber linear array 140 for fixing the output slab 144.
Optionally, can also be vertical shape, therefore can be with since the slit of streak camera 210 can be flat shape
The setting of the output slab 144 is square, it thus can be by the way that the output slab 144 be rotated by 90 °, to adapt to difference
Streak camera 210.
In the present embodiment, the static housing 160 can also include an at least storage tank, the fiber linear array 140
Quantity is at least one.Need fiber linear array 140 to be used to may be mounted in the mounting groove 161 in test process, with into
Row test；The fiber linear array 140 not used in current test process can be then fixed in storage tank, to facilitate whole remove
Optical fiber 141 is moved and protects, and convenient for choosing corresponding fiber linear array 140 when carrying out different tests.For example, pair with striped phase
Machine 210 records time longer gear, then can be selected the fiber linear array 140 of time difference Δ t (that is, preset length Δ L) bigger into
Row measures.
In conclusion a kind of time response measuring device of offer of the embodiment of the present invention and system.Described device is for measuring
The time response of streak camera.Described device includes isochronous controller, laser, fiber linear array and computing device.The synchronization
Controller is connect with the laser and streak camera, controls whether the laser is sent out respectively for passing through two pulse signals
Go out the working condition of pulse laser and the streak camera.Wherein, the fiber linear array and streak camera are arranged in pulse laser
Light path on.The fiber linear array includes the different optical fiber of more root long degree, is used for transmission the pulse laser that the laser is sent out.
The streak camera obtains scan image, and the scan image includes being swashed by what the pulse laser that the fiber linear array exports was formed
Luminous point.The computing device is according to the distance in the horizontal direction of two laser points in the scan image and corresponding two optical fiber
Between length difference the time response of the streak camera is calculated.When corresponding to streak camera different stalls as a result,
Between characteristic measure, especially the time response of the gear of 10ns or more is accurately measured, is avoided using standard
Due to too short the case where leading to not accurately measure time response in pulse spacing when having standardization, and there is simple and practicable spy
Point has preferable application prospect in the application of streak camera and maintenance area.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of time response measuring device, which is characterized in that described device includes：Isochronous controller, laser, fiber linear array
And computing device, wherein the isochronous controller is connect with streak camera and the laser, the computing device and the item
Line camera connects,
The isochronous controller is used to control the working condition of the laser and the streak camera by two pulse signals；
The laser is used to export pulse laser according to the control of the isochronous controller, wherein the fiber linear array and institute
Streak camera is stated to be arranged in the light path of the pulse laser；
The fiber linear array includes the different optical fiber of more root long degree, and the fiber linear array is used for transmission the pulse laser；
The pulse laser of the laser output exposes to the streak camera by the fiber linear array, and the streak camera is used
In obtaining scan image, wherein the scan image includes the laser point formed by pulse laser；
The computing device is used for according to the distance in the horizontal direction of two laser points in the scan image and two corresponding
The time response of the streak camera is calculated in length difference between optical fiber.
2. the apparatus according to claim 1, which is characterized in that the fiber linear array further includes the input panel being oppositely arranged
And output slab,
Every optical fiber includes input terminal and output end；
The input terminal of multifiber is fixed in the input panel, and the output end of multifiber is fixed on described defeated
Go out on panel.
3. the apparatus of claim 2, which is characterized in that the input panel is arranged in the fiber linear array close to institute
The side of laser is stated, the output slab is arranged in the fiber linear array close to the side of the streak camera.
4. device according to claim 3, which is characterized in that the input terminal of multifiber is in the input panel
In one default circular scope, the output end of multifiber is in the distribution of line shape on the output slab.
5. device according to claim 4, which is characterized in that the output end of multifiber is on the output slab
In horizontal linear or vertical the distribution of line shape.
6. device according to claim 4, which is characterized in that the length of every optical fiber is incremented by successively along linear extending direction
Preset length.
7. the apparatus of claim 2, which is characterized in that described device further includes beam expanding lens,
The beam expanding lens is arranged between the laser and the fiber linear array, and the pulse for exporting the laser swashs
Light is expanded, so that the input terminal of the pulse laser uniform irradiation after expanding to the multifiber of the fiber linear array.
8. the apparatus of claim 2, which is characterized in that described device further includes a static housing, the fixed case
Body includes mounting groove,
The mounting groove includes two card slots being oppositely arranged, and a card slot is for fixing the input panel, and another card slot is for solid
The fixed output slab, with the fixation fiber linear array.
9. device according to claim 8, which is characterized in that the static housing further includes an at least storage tank, described
The quantity of fiber linear array is at least one, and the storage tank is for the fixed fiber linear array being currently not used by.
10. a kind of time response measuring system, which is characterized in that the system comprises appoint in streak camera and claim 1-9
Time response measuring device described in meaning one, described device are used to measure the time response of the streak camera.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111862232A (en) * | 2020-06-18 | 2020-10-30 | 深圳奥比中光科技有限公司 | Calibration method and device |
| CN112484690A (en) * | 2020-11-30 | 2021-03-12 | 河南省保时安电子科技有限公司 | Indoor calibration device of laser ranging telescope |
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| CN112484690A (en) * | 2020-11-30 | 2021-03-12 | 河南省保时安电子科技有限公司 | Indoor calibration device of laser ranging telescope |
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