CN118263755A - Concave-convex cavity device based on pulse-division broadening spectrum - Google Patents
Concave-convex cavity device based on pulse-division broadening spectrum Download PDFInfo
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- CN118263755A CN118263755A CN202410695616.9A CN202410695616A CN118263755A CN 118263755 A CN118263755 A CN 118263755A CN 202410695616 A CN202410695616 A CN 202410695616A CN 118263755 A CN118263755 A CN 118263755A
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- 239000006185 dispersion Substances 0.000 claims abstract description 54
- 239000000178 monomer Substances 0.000 claims abstract description 21
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- 230000008569 process Effects 0.000 claims description 13
- 238000001179 sorption measurement Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
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- 230000003287 optical effect Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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Abstract
The invention relates to the field of pulse stretching spectrum, and discloses a concave-convex cavity device based on pulse stretching spectrum, wherein the number of chromatic dispersion compensating mirror monomers is multiple, a user can set corresponding number on a rod body along with the use requirement, so that the concave-convex cavity device can adapt to the detection of different light beams or the spectrum stretching of the user, the arrangement is designed to adopt a modularized design, the user can replace or upgrade the chromatic dispersion compensating mirror monomers and other parts according to the actual requirement, the universality and expansibility of equipment are improved, for example, the user can select different numbers and types of chromatic dispersion compensating mirror monomers according to the requirement so as to adapt to different laser application scenes, and in addition, the modularized design of the concave-convex cavity device can also facilitate the maintenance and upgrade of the user, and the maintenance cost and the downtime are reduced.
Description
Technical Field
The invention relates to the field of pulse stretching spectrum, in particular to a concave-convex cavity device based on pulse stretching spectrum.
Background
In the femto-second laser technology, the concave-convex cavity device for generating high-energy pulses is usually referred to as a combination of a dispersion compensation mirror and a pulse compressor, the concave-convex cavity device (also referred to as a "gain cavity" or a "resonant cavity") is a very important part in the laser technology, and determines the characteristics of a laser beam, such as wavelength, energy, mode and the like, the concave-convex cavity device is usually composed of two or more mirrors with high reflectivity, which may be planar or concave-convex (such as concave mirrors or convex mirrors) and are used for reflecting a light beam in a cavity for multiple times, so as to enhance the energy of the laser, the principle of the concave-convex cavity device is mainly based on interference and resonance phenomena of light, when the laser is reflected in the cavity for multiple times, a part of light is transmitted out of the cavity, but most of the light continues to circulate in the cavity, and due to the fact that the distance and angle between the mirrors are precisely designed, the light satisfies resonance conditions when the light propagates in the cavity, namely the round-trip time of the light in the cavity is equal to the service life of photons in a laser gain medium, so that the light is amplified in the cavity when passing through the cavity gain medium, and thus the light gets a certain energy gain is increased each time when the light passes through the gain medium.
In the process of refracting and feeding back different light beams and forming a specific wavelength spectrum, groups of lenses with unequal intervals are often required to be replaced to adapt to different pulse lasers for spectrum broadening, but in order to avoid stray light interference outside equipment, a concave-convex cavity device in the prior art directly clamps the lenses in the concave-convex cavity device in a fixed mounting manner, so that the lens is not suitable for spectrum broadening of different pulse lasers needing to form the specific wavelength spectrum.
Disclosure of Invention
The invention provides a concave-convex cavity device based on pulse-division broadening spectrum, which overcomes the defects described in the background art.
The technical scheme adopted for solving the technical problems is as follows:
The concave-convex cavity device based on pulse-division broadening spectrum comprises a shell, an adjusting mirror assembly, a pulse compressor and an adjusting device, wherein a gain cavity for installing the adjusting mirror assembly is arranged in the shell, two ends of the gain cavity are respectively communicated with a second light hole through a first light hole, the first light hole and the second light hole are coaxially arranged, the adjusting mirror assembly is adjusted to rotate through the adjusting device, the pulse compressor is arranged on one side close to the second light hole, the second light hole is communicated with the input end of the pulse compressor, and laser is injected into the gain cavity from the first light hole and is injected into the pulse compressor through the second light hole;
The adjusting mirror assembly comprises a rod body, supporting rings, connecting ribs and dispersion compensating mirror monomers, wherein the supporting rings are connected to two sides of the rod body, the two supporting rings are connected through a plurality of connecting ribs, and the dispersion compensating mirror monomers are sleeved outside the rod body and are arranged along the length direction of the rod body;
The dispersion compensation lens monomer staggers the axle center setting of the body of rod, and the in-process dispersion compensation lens monomer of rotation regulation mirror subassembly can overlap with first light hole and second light hole, when laser inslot, handles laser through dispersion compensation lens monomer.
The dispersion compensation lens unit comprises a lens body, a lantern ring, a connecting rod and an adsorption magnet, wherein the lens body is sleeved on the rod body through the lantern ring, and the adsorption magnet is fixed with the lantern ring through the connecting rod;
An embedded block is arranged on the inner side of the lantern ring, a sliding groove for sliding the chromatic dispersion compensation mirror monomer is arranged at the corresponding position of the rod body and the embedded block, and the embedded block is embedded into the sliding groove;
The upper surface of the shell is provided with an adjusting groove, a sliding magnet is arranged in the adjusting groove in a sliding mode, and when the chromatic dispersion compensation lens monomer is overlapped with the first light hole, the adsorption magnet is adsorbed with the sliding magnet.
The adjusting device comprises a gear, an adjusting roller, a limiting clamping block and a sleeve, wherein the limiting clamping block is fixed on the surface of the shell, the adjusting roller penetrates through the limiting clamping block and then is connected with the sleeve, the sleeve is sleeved on one side, far away from the gear, of the adjusting roller, the periphery of the supporting ring is provided with clamping teeth, and the gear is meshed with the clamping teeth;
The adjusting roller surface is provided with annular bulges at the corresponding positions of the limiting clamping blocks, and the annular bulges are embedded into the limiting clamping blocks.
According to the preferred technical scheme, a resistance reducing ring is sleeved outside a supporting ring far away from one side of the adjusting device, the resistance reducing rings are arranged on the inner side and the outer side of the supporting ring, balls are arranged on the adjacent surfaces of the two resistance reducing rings and the supporting ring in an array mode, and the resistance reducing rings are propped against the supporting ring through all the balls.
Compared with the prior art, the technical scheme has the following advantages:
The number of the dispersion compensating mirror monomers is multiple, a user can set corresponding number on the rod body according to the use requirement, so that the concave-convex cavity device can adapt to detection of different light beams or spectrum broadening of the user, the arrangement aims at adopting a modularized design, the user can replace or upgrade the components such as the dispersion compensating mirror monomers according to the actual requirement, the universality and expansibility of the device are improved, for example, the user can select different numbers and types of the dispersion compensating mirror monomers according to the requirement, so as to adapt to different laser application scenes, and in addition, the modularized design of the concave-convex cavity device can facilitate maintenance and upgrading of the user, and the maintenance cost and the downtime are reduced.
The sliding magnet sliding in the adjusting groove is matched with the adsorption magnet, so that the adjusting process of dispersion compensation is simplified, the overall stability of the system is improved, the convenience of operation is guaranteed while the magnetic connection is provided for firm adsorption, the working principle of the dispersion compensation mirror monomer is particularly efficient and intelligent, the position of the adsorption magnet can be controlled by adjusting the sliding magnet on the shell during working, the position of the mirror body is further influenced, the real-time compensation of dispersion is realized, the whole adjusting process is carried out through magnetic force, the action is rapid, the precision is high, almost no mechanical abrasion is caused, the service life of the device is greatly prolonged, and in addition, the dispersion compensation mirror monomer can be easily removed or repositioned from the optical system due to the reversibility of magnetic connection, so that great convenience is provided for maintenance and upgrading of the device.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of fig. 1 in semi-section.
Fig. 3 is a schematic perspective view of a dispersion compensating mirror monomer.
Fig. 4 is a schematic view of an adjusting device.
FIG. 5 is a schematic view of a resistance reducing loop.
In the figure: a housing 11, a first light hole 111, a second light hole 112, an adjustment groove 113, and a sliding magnet 1131;
the lens adjusting component 12, the rod body 121, the sliding groove 1211, the supporting ring 122, the connecting rib 123, the dispersion compensating lens 124, the lens 1241, the collar 1242, the insert 2421, the connecting rod 1243, the adsorption magnet 1244, the resistance reducing ring 125 and the ball 1251;
A pulse compressor 13;
The adjusting device 14, the gear 141, the adjusting roller 142, the annular projection 1421, the limit clamping block 143 and the sleeve 144.
Detailed Description
As shown in fig. 1 to 5, the present invention provides a concave-convex cavity device based on pulse stretching spectrum, which comprises a housing 11, an adjusting mirror assembly 12, a pulse compressor 13 and an adjusting device 14, wherein a gain cavity for installing the adjusting mirror assembly 12 is arranged in the housing 11, two ends of the gain cavity are respectively communicated with a second light hole 112 through a first light hole 111, the first light hole 111 and the second light hole 112 are coaxially arranged, the adjusting mirror assembly 12 adjusts rotation through the adjusting device 14, the pulse compressor 13 is arranged at one side close to the second light hole 112, the second light hole 112 is communicated with the input end of the pulse compressor 13, and laser is injected into the gain cavity from the first light hole 111 and then injected into the pulse compressor 13 through the second light hole 112;
The adjusting mirror assembly 12 comprises a rod 121, support rings 122, connecting ribs 123, and dispersion compensating mirror units 124, wherein the support rings 122 are connected to two sides of the rod 121, the two support rings 122 are connected through a plurality of connecting ribs 123, and the dispersion compensating mirror units 124 are sleeved outside the rod 121 and are arranged along the length direction of the rod 121;
The dispersion compensation lens 124 is staggered with the axis of the rod 121, and the dispersion compensation lens 124 overlaps the first light hole 111 and the second light hole 112 in the process of rotating the adjusting lens assembly 12, and when laser is injected, the dispersion compensation lens 124 processes the laser;
The laser is injected into the gain cavity from the first light hole 111, amplified in the gain cavity, and then injected into the pulse compressor 13 through the second light hole 112, in the process, the position of the adjusting mirror assembly 12 can be adjusted through the adjusting device 14 so as to perform dispersion compensation on the laser, and due to the fact that the dispersion compensating mirror 124 is staggered with the axis of the rod body 121, when the adjusting mirror assembly 12 rotates, the dispersion compensating mirror 124 can overlap with the first light hole 111 and the second light hole 112, and therefore when the laser passes through the dispersion compensating mirror 124, the laser can be processed, dispersion generated in the process of laser propagation in the gain cavity is compensated, the time domain width of laser pulses is kept, the peak power of the laser pulses is improved, and in this way, the device can not only provide high-quality laser output, but also ensure the stability and reliability of a laser system;
And as shown in fig. 2, the number of the dispersion compensating mirror units 124 is plural, so that a user can set a corresponding number on the rod 121 according to the use requirement, and the concave-convex cavity device in the invention can adapt to the detection or the spectrum broadening of different light beams by the user.
Further, as shown in fig. 3, the dispersion compensating lens 124 includes a lens body 1241, a collar 1242, a connecting rod 1243, and an attracting magnet 1244, wherein the lens body 1241 is sleeved on the rod body 121 through the collar 1242, and the attracting magnet 1244 is fixed with the collar 1242 through the connecting rod 1243; an insert 2421 is arranged on the inner side of the collar 1242, a sliding groove 1211 for sliding the chromatic dispersion compensating mirror 124 is arranged at the corresponding position of the rod body 121 and the insert 2421, and the insert 2421 is embedded into the sliding groove 1211; the upper surface of the shell 11 is provided with an adjusting groove 113, a sliding magnet 1131 is arranged in the adjusting groove 113 in a sliding manner, and when the dispersion compensating mirror unit 124 is overlapped with the first light hole 111, an adsorption magnet 1244 is adsorbed with the sliding magnet 1131;
The design of the dispersion compensating mirror unit has several advantages, including high-precision optical performance, structural flexibility and easy adjustment, firstly, the connection mode of the mirror body 1241 and the rod body 121 through the collar 1242 provides a stable installation mode, so that the lens can still keep a precise position when being subjected to external force, which is crucial for dispersion compensation, since it reduces the dispersion effect change caused by vibration or displacement, secondly, the cooperation of the insert 2421 and the chute 1211 enables the dispersion compensating mirror unit 124 to be accurately adjusted on the shell 11 so as to adapt to different optical paths and dispersion requirements, which is particularly important in practical application, since it allows a user to adjust in real time according to specific situations without replacing the whole assembly, and finally, the cooperation of the sliding magnet 1131 sliding in the adjusting slot 113 and the absorbing magnet 1244 not only simplifies the adjustment process of dispersion compensation, but also improves the overall stability of the system, because the magnetic connection provides firm absorption, and ensures the convenience of operation;
Based on the advantages, the working principle of the dispersion compensation mirror monomer is particularly efficient and intelligent, and when the dispersion compensation mirror works, the position of the absorption magnet 1244 can be controlled by adjusting the sliding magnet 1131 on the shell 11, so that the position of the mirror 1241 is influenced, and the real-time compensation of dispersion is realized.
When the dispersion compensating mirror 124 overlaps the first light hole 111, the adsorption of the adsorption magnet 1244 and the other magnet 1411 is immediately effective, and at this time, the position of the mirror 1241 is locked due to the precise matching of the insert 2421 and the slide slot 1211, so that the stability and accuracy in the dispersion compensating process are ensured.
In addition, as shown in fig. 4, the adjusting device 14 includes a gear 141, an adjusting roller 142, a limiting block 143, and a sleeve 144, the limiting block 143 is fixed on the surface of the housing 11, the adjusting roller 142 passes through the limiting block 143 and is connected with the sleeve 144, the sleeve 144 is sleeved on one side of the adjusting roller 142 far away from the gear 141, and the circumferential surface of the supporting ring 122 is provided with a latch, and the gear 141 is meshed with the latch; an annular projection 1421 is arranged at the corresponding position between the surface of the regulating roller 142 and the limiting clamping block 143, and the annular projection 1421 is embedded into the limiting clamping block 143; the outer sleeve of the support ring 122 at the side far away from the adjusting device 14 is provided with resistance reducing rings 125, the resistance reducing rings 125 are arranged at the inner side and the outer side of the support ring 122, the adjacent surfaces of the two resistance reducing rings 125 and the support ring 122 are provided with balls 1251, and the resistance reducing rings 125 are propped against the support ring 122 through all the balls 1251;
As can be seen from the above, the design of the adjusting device 14 represents excellent engineering optimization and functional integration, firstly, by integrating the gear 141, the adjusting roller 142, the limit block 143 and the sleeve 144 into a compact system, accurate adjustment and stable support of the optical element are realized, the limit of the adjusting roller 142 in the movement process is ensured by the fixed position of the limit block 143, instability or damage caused by excessive movement is avoided, and the connection of the adjusting roller 142 and the sleeve 144 provides a smooth rotation shaft, so that friction and resistance are reduced;
Based on the above, the design of the sleeve 144 further optimizes the efficiency of the movement of the system, since it protects the surface of the dancer 142 from direct contact with the external environment, which may lead to wear or contamination, while the structure of the sleeve 144 also ensures the stability of the dancer 142 during movement, since it limits the radial movement of the dancer 142; the engagement of the teeth on the support ring 122 with the gear 141 provides an accurate transmission means so that rotation of the gear 141 can be directly translated into movement of the support ring 122, which is not only efficient but also reliable; in the preferred technical scheme, the introduction of the resistance reducing ring 125 is a further improvement to the original design, and the design of the resistance reducing ring 125 not only reduces the friction and resistance of the support ring 122 in the moving process, but also provides a more stable and efficient sliding mechanism through the array design of the balls 1251, and the design effectively improves the dynamic performance of the system, so that the adjustment of the optical element is more accurate and rapid; the annular protrusion 1421 on the limiting block 143 is embedded in the design, so that the fixity of the adjusting roller 142 in the limiting block 143 is further enhanced, the adjusting roller 142 is ensured not to accidentally move in the adjusting process, which is important for maintaining the stability and the precision of the system, and the design of the adjusting device 14 is excellent in improving the adjusting precision and the stability, reducing the movement resistance and improving the operation efficiency, and the advantages make the adjusting device 14 an integral part of the invention.
And the connectivity of the adjustment device 14 in the present invention is a significant advantage of this design, which provides the possibility for automation and intelligence of the system, by connecting the sleeve 144 to a motor or other driving device, precise control of the rotation of the adjustment roller 122 can be achieved, and the combination of such a machine and motor not only improves the adjustment speed and accuracy, but also greatly simplifies the operation flow; when the sleeve 144 is connected with the motor, the rotation speed and direction of the motor can be regulated through programming or remote control, so that the rotation of the regulating roller 122 can be controlled, and the automatic control mode can ensure that the regulation in the invention does not need manual direct operation, thus greatly improving the working efficiency and safety, simultaneously, the accurate control capability of the motor also ensures the movement precision of the regulating roller 122, which is important for the invention, and the design of the regulating device 14 has obvious advantages in improving the automation degree, the accurate control and the operation convenience, and the advantages can lead the regulating device 14 to be widely applied.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and therefore should not be taken as limiting the scope of the invention, for all changes and modifications that come within the meaning and range of equivalency of the claims and specification are therefore intended to be embraced therein.
Claims (3)
1. The concave-convex cavity device based on pulse stretching spectrum is characterized by comprising a shell (11), an adjusting mirror assembly (12), a pulse compressor (13) and an adjusting device (14), wherein a gain cavity for installing the adjusting mirror assembly (12) is arranged in the shell (11), two ends of the gain cavity are respectively communicated with a second light hole (112) through a first light hole (111), the first light hole (111) and the second light hole (112) are coaxially arranged, the adjusting mirror assembly (12) adjusts rotation through the adjusting device (14), the pulse compressor (13) is arranged on one side close to the second light hole (112), the second light hole (112) is communicated with the input end of the pulse compressor (13), and laser is injected into the gain cavity from the first light hole (111) and then injected into the pulse compressor (13) through the second light hole (112);
The adjusting mirror assembly (12) comprises a rod body (121), supporting rings (122), connecting ribs (123) and dispersion compensating mirror monomers (124), wherein the supporting rings (122) are connected to two sides of the rod body (121), the two supporting rings (122) are connected through the connecting ribs (123), and the dispersion compensating mirror monomers (124) are sleeved outside the rod body (121) and are arrayed along the length direction of the rod body (121);
The dispersion compensation lens unit (124) is arranged in a way of staggering the axle center of the rod body (121), the dispersion compensation lens unit (124) is overlapped with the first light hole (111) and the second light hole (112) in the process of rotating the adjusting lens assembly (12), and when laser is injected, the dispersion compensation lens unit (124) is used for processing the laser;
The dispersion compensation lens unit (124) comprises a lens body (1241), a sleeve ring (1242), a connecting rod (1243) and an adsorption magnet (1244), wherein the lens body (1241) is sleeved on the rod body (121) through the sleeve ring (1242), and the adsorption magnet (1244) is fixed with the sleeve ring (1242) through the connecting rod (1243);
An embedded block (2421) is arranged on the inner side of the collar (1242), a sliding groove (1211) for sliding the chromatic dispersion compensation lens monomer (124) is arranged at the corresponding position of the rod body (121) and the embedded block (2421), and the embedded block (2421) is embedded into the sliding groove (1211);
An adjusting groove (113) is formed in the upper surface of the shell (11), a sliding magnet (1131) is arranged in the adjusting groove (113), and when the dispersion compensating mirror monomer (124) is overlapped with the first light hole (111), the adsorption magnet (1244) and the sliding magnet (1131) are adsorbed.
2. The concave-convex cavity device based on pulse stretching spectrum according to claim 1, wherein the adjusting device (14) comprises a gear (141), an adjusting roller (142), a limiting clamping block (143) and a sleeve (144), the limiting clamping block (143) is fixed on the surface of the shell (11), the adjusting roller (142) penetrates through the limiting clamping block (143) and then is connected with the sleeve (144), the sleeve (144) is sleeved on one side, far from the gear (141), of the adjusting roller (142), the periphery of the supporting ring (122) is provided with clamping teeth, and the gear (141) is meshed with the clamping teeth;
an annular bulge (1421) is arranged at the corresponding position of the surface of the regulating roller (142) and the limiting clamping block (143), and the annular bulge (1421) is embedded into the limiting clamping block (143).
3. The concave-convex cavity device based on pulse-division broadening spectrum according to claim 1, wherein a resistance-reducing ring (125) is sleeved outside a supporting ring (122) at one side far away from the adjusting device (14), the resistance-reducing rings (125) are arranged at the inner side and the outer side of the supporting ring (122), balls (1251) are arranged on the adjacent surfaces of the two resistance-reducing rings (125) and the supporting ring (122), and the resistance-reducing rings (125) are propped against the supporting ring (122) through all the balls (1251).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410695616.9A CN118263755A (en) | 2024-05-31 | 2024-05-31 | Concave-convex cavity device based on pulse-division broadening spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410695616.9A CN118263755A (en) | 2024-05-31 | 2024-05-31 | Concave-convex cavity device based on pulse-division broadening spectrum |
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| Publication Number | Publication Date |
|---|---|
| CN118263755A true CN118263755A (en) | 2024-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410695616.9A Pending CN118263755A (en) | 2024-05-31 | 2024-05-31 | Concave-convex cavity device based on pulse-division broadening spectrum |
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| Country | Link |
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| CN (1) | CN118263755A (en) |
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- 2024-05-31 CN CN202410695616.9A patent/CN118263755A/en active Pending
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