CN105958309A - Pyramid prism-based array laser self-restraint multi-pass folded resonator - Google Patents
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- CN105958309A CN105958309A CN201610535129.1A CN201610535129A CN105958309A CN 105958309 A CN105958309 A CN 105958309A CN 201610535129 A CN201610535129 A CN 201610535129A CN 105958309 A CN105958309 A CN 105958309A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
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Abstract
The invention discloses a pyramid prism-based array laser self-restraint multi-pass folded resonator. The pyramid prism-based array laser self-restraint multi-pass folded resonator comprises a pyramid prism, a laser medium, a corner prism, a resonator output mirror and a resonator end mirror which are arranged according to the set position structure, so that a light path can achieve spatial multi-pass folded self-restraint; and the size of a traditional multistage concatenated oscillation light path is greatly reduced. Meanwhile, the pyramid prism is adopted, so that the anti-misalignment characteristic of a system is greatly improved; and the resonator disclosed by the invention is the resonator for obtaining the advantages of miniaturization, high reliability, high power/high energy and high beam quality laser output. The pyramid prism-based array laser self-restraint multi-pass folded resonator is simple in light path, compact in structure, easy to expand and convenient to adjust, and is especially suitable for the engineering use occasions with the requirements on laser performance, structure space and high reliability.
Description
Technical field
The invention belongs to laser technology field, particularly to a kind of array laser based on prism of corner cube from constraint many journeys fold resonator, it is adaptable to advanced Laser Processing and military laser field.
Background technology
High power/big energy, high light beam quality, miniaturization and high reliability laser instrument have important application in scientific research, the advanced field such as industrial processes and national defense and military.At present, there is a multiple scheme realizing high power/big energy output, but there is also problems in terms of miniaturization, highly reliable and high light beam quality.High-power chemical laser, heat capacity measurements etc. have been achieved with the high-power output of tens kW magnitudes, but systems bulky, involve great expense, and reliability, stability and combination property are unsatisfactory.
Master oscillation power amplification (MOPA) technology is owing to realizing the laser characteristics of laser instrument respectively with output power/energy, king oiscillator obtains the laser characteristics such as the beam quality of laser instrument, repetition, pulsewidth, power amplifier realizes high power/energy while keeping laser characteristics and amplifies, obtain the highest attention of domestic and international laser research worker, it is thus achieved that develop greatly.But, this technical pattern is complicated, is realizing being difficult on high power/big energy miniaturization and highly reliable.
The laser instrument of multiple middle low power/energy is realized far field optics coherence tomography by the way of the most phase-locked by multi-path laser optics coherence tomography technology, it is thus achieved that high power/big energy output, is the study hotspot of domestic and international laser technology field.But, the secondary lobe of its far-field spot has disperseed the most of energy synthesizing light beam, and structure is complicated, limits its further development and application.
Prism of corner cube is also referred to as orienting reflex prism, its auto-collimation rear reflection characteristic is widely known by the people, i.e. no matter which kind of angle incident ray becomes incident with its bottom surface, light is after three orthogonal reflecting surface total internal reflections successively of prism, emergent ray is to be anti-parallel to incident ray all the time, and be centrosymmetric distribution with pyramid summit, its relation is image and mirror image relationship.The seamed edge of three reflectings surface of pyramid and picture thereof are divided into spatially symmetrical 6 sub regions separated, and will forever be on two subregions of symmetry based on rearward reflection characteristic, incident ray and emergent ray.
The reliability consideration of the military solid state laser of applicant's long campaigns, first prism of corner cube is applied to solid state laser, Effect of Back-Cavity Mirror as laserresonator, invent " Solid laser without adjustment ", the patent No.: CN1195214A, debugging is exempted from the anti-imbalance utilizing the auto-collimation rear reflection characteristic of prism of corner cube to achieve solid state laser.After further research, corner-cube prism resonant cavity is applied to the electro-optical Q-switching laser of pole medium, devise " a kind of can be used for electric-optically Q-switched adjust-free solid laser ", the patent No.: ZL 200520095538.1, it is achieved that the highly reliable operating of electro-optical Q-switching laser.
Applicant is on the basis of existing achievement in research, multiple prism of corner cubes are used for laserresonator, the many journeys having invented array laser fold constraint resonator cavity, realize self-organizing, from constraint, compact, miniaturization, high reliability, anti-imbalance, be easily assembled the laser aid of debugging, and obtain high power/big energy, high light beam quality laser exports.At present, the research of this respect have not been reported.
Summary of the invention
It is an object of the invention to provide a kind of array laser based on prism of corner cube from constraint many journeys fold resonator.Be positioned at prism of corner cube symmetrical region laser utilizes prism of corner cube auto-collimation rear reflection characteristic as from the folding element retraining internal oscillation light path, the constraint certainly utilizing multiple prism of corner cube to realize array laser two-dimensional directional folds anti-imbalance, it is achieved small-sized highly reliable array laser is from constraint many journeys folding laser resonator.Light path of the present invention is succinct, compact conformation, and easily extends, easy to adjust, is particularly suitable for the Practical occasion all required laser activity, structure space and high reliability.
Implement technical scheme as follows:
A kind of array laser based on prism of corner cube is from constraint many journeys fold resonator, including prism of corner cube, laser medium, corner cube, resonator cavity outgoing mirror resonant cavity tail mirror；Each mirrored sides of prism of corner cube is divided into several subregions respectively, the subregion of each side of prism of corner cube projection subregion on the bottom surface of prism of corner cube centrosymmetry two-by-two centered by the cone point subpoint on the bottom surface of prism of corner cube of prism of corner cube, one of them subregion as outgoing subregion, after resonator cavity outgoing mirror reflects, outgoing subregion is incided through the resonant optical path that outgoing subregion is corresponding through resonator cavity outgoing mirror part outgoing, residue laser along the resonant optical path that outgoing subregion is corresponding from the laser of outgoing subregion outgoing；The adjacent sub regions of outgoing subregion is as afterbody subregion, it is totally reflected, through resonator cavity tail mirror, the resonant optical path incidence afterbody subregion that tailing edge afterbody subregion is corresponding along the resonant optical path that afterbody subregion is corresponding from the laser of afterbody subregion reflection, incide the laser-bounce of subregion to centrosymmetric subregion, the laser of the subregion reflection of non-outgoing subregion and non-afterbody subregion incides adjacent non-outgoing subregion and the subregion of non-afterbody subregion through corner cube, and the resonant optical path that each sub regions is corresponding is provided with laser medium.
Each side of prism of corner cube as above is all divided into two sub regions, and each sub regions is followed successively by the first subregion, the second subregion, the 3rd subregion, the 4th subregion, the 5th subregion and the 6th subregion clockwise；Centered by the cone of prism of corner cube puts the subpoint on the bottom surface of prism of corner cube, the projection subregion of the first subregion and the projection subregion centrosymmetry of the 4th subregion, the projection subregion of the second subregion and the projection subregion centrosymmetry of the 5th subregion, the projection subregion of the 3rd subregion and the projection subregion centrosymmetry of the 6th subregion, the first subregion is as outgoing subregion；Second subregion is as afterbody subregion.
Prism of corner cube as above is solid pyramid or hollow pyramid, and corner cube is corner cube or corner cube prism or other refractive power devices.
Resonator cavity outgoing mirror resonant cavity tail mirror as above is two independent chamber mirrors or the negative and positive mirror of integration.
The present invention has the advantage that relative to prior art
1, whole array laser light path constitute self-organizing, from restricted stability resonator cavity, three-dimensional anti-imbalance, easy to adjust, reliability is high；
2, compact conformation, compact space in obtain big energy and high light beam quality；
3, array laser can be realized in a space the least and fold laser output from retraining many journeys, symmetry due to prism of corner cube self, in the volume of a laser instrument, realize the extension of more multichannel array laser the most easily, long resonant optical path can be realized in less space.
Accompanying drawing explanation
Fig. 1 (a) is the shape and structure schematic diagram of prism of corner cube；
Fig. 1 (b) is prism of corner cube auto-collimation retroreflection optics characteristic；
Fig. 2 (a) is the schematic shapes of round bottom prism of corner cube；
Fig. 2 (b) is the schematic diagram of six sub regions that the subregion of three reflectings surface of prism of corner cube projects in prism of corner cube bottom surface:
Fig. 3 is that the three-dimensional 6 road array laser of prism of corner cube and corner cube composition is from constraint many journeys fold resonator structural representation.
Fig. 4 (a) is that the three-dimensional 6 road array laser seen by prism of corner cube rounded bottom surface is from constraint many journeys fold resonator structural representation.
Fig. 4 (b) is a kind of based on the extension signal of prism of corner cube 18 road array laser.
Wherein: 1-prism of corner cube；2-laser medium；3-corner cube；
1-1, the first subregion；1-2, the second subregion；1-3, the 3rd subregion；1-4, the 4th subregion；1-5, the 5th subregion；1-6, the 6th subregion；
2-1, the first laser medium；2-2, the second laser medium；2-3, the 3rd laser medium；2-4, the 4th laser medium；2-5, the 5th laser medium；2-6, the 6th laser medium；
3-1, the first corner cube；3-2, the second corner cube；
4-1, resonator cavity outgoing mirror；4-2, resonator cavity tail mirror.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, but the invention is not restricted to the present embodiment.
The present invention utilizes the auto-collimation rear reflection characteristic of prism of corner cube to inject turnover element mutually as light path, folds light path in conjunction with corner cube 3 forming array laser from the anti-imbalance of constraint multidimensional.
A kind of array laser based on prism of corner cube is from constraint many journeys fold resonator, including prism of corner cube 1, laser medium 2, corner cube 3, resonator cavity outgoing mirror 4-1 resonant cavity tail mirror 4-2, each mirrored sides of prism of corner cube 1 is divided into several subregions respectively, the subregion of each side of prism of corner cube 1 projection subregion on the bottom surface of prism of corner cube 1 centrosymmetry two-by-two centered by the cone point subpoint on the bottom surface of prism of corner cube 1 of prism of corner cube 1, one of them subregion as outgoing subregion, from the laser of outgoing subregion outgoing along resonant optical path corresponding to outgoing subregion through resonator cavity outgoing mirror 4-1 part outgoing, residue laser incides outgoing subregion through the resonant optical path that outgoing subregion is corresponding after resonator cavity outgoing mirror 4-1 reflects；The adjacent sub regions of outgoing subregion is as afterbody subregion, it is totally reflected, through resonator cavity tail mirror 4-2, the resonant optical path incidence afterbody subregion that tailing edge afterbody subregion is corresponding along the resonant optical path that afterbody subregion is corresponding from the laser of afterbody subregion reflection, incide the laser-bounce of subregion to centrosymmetric subregion, the laser of the subregion reflection of non-outgoing subregion and non-afterbody subregion incides adjacent non-outgoing subregion and the subregion of non-afterbody subregion through corner cube 3, and the resonant optical path that each sub regions is corresponding is provided with laser medium 2.
The two-way laser being in prism of corner cube 1 bottom surface projection symmetric position injects mutually owing to the auto-collimation rear reflection characteristic of prism of corner cube 1 realizes constraint certainly；The two-way laser being in projection adjacent position, prism of corner cube 1 bottom surface injects mutually owing to the auto-collimation rear reflection characteristic of corner cube 3 realizes constraint certainly, thus realizes the self-organizing of array laser, from retraining；The other end of projection one pair of which adjacent position, prism of corner cube 1 bottom surface is provided with resonator mirror, makes whole array laser form closed loop feedback, and Output of laser.
Alternatively, as shown in Fig. 2 (a) and Fig. 2 (b), each side of prism of corner cube 1 is all divided into two sub regions, and each sub regions is followed successively by the first subregion 1-1, the second subregion 1-2, the 3rd subregion 1-3, the 4th subregion 1-4, the 5th subregion 1-5 and the 6th subregion 1-6 clockwise；Centered by the cone of prism of corner cube 1 puts the subpoint on the bottom surface of prism of corner cube 1, the projection subregion of the first subregion 1-1 and the projection subregion centrosymmetry of the 4th subregion 1-4, the projection subregion of the second subregion 1-2 and the projection subregion centrosymmetry of the 5th subregion 1-5, the projection subregion of the 3rd subregion 1-3 and the projection subregion centrosymmetry of the 6th subregion 1-6, the first subregion 1-1 is as outgoing subregion；Second subregion 1-2 is as afterbody subregion.
Prism of corner cube 1 can be solid pyramid or hollow pyramid.
Prism of corner cube is also referred to as directional prism, it it is typical positive tetrahedron optical prism, it is shaped like the angle cut in regular cube, as shown in Fig. 1 (a), its three space reflection faces are orthogonal, its emergent ray and incident ray are in same meridian plane, and direction turnover 180 ° is symmetrical relative to the vertex of a cone.Light is from any direction by pyramid bottom surface incidence entering angle cone prism, and after three reflecting surface total internal reflections, emergent ray necessarily returns along incident ray direction, and as shown in Fig. 1 (b), this characteristic is referred to as rear reflection characteristic.Expansion along with application demand, the shape of prism of corner cube there has also been diversified development, from single positive tetrahedron, to round bottom pyramid, sphere pyramid, hollow pyramid, corner cube etc., here illustrating as a example by round bottom pyramid, round bottom pyramid is as shown in Figure 2 (a) shows.
As shown in Fig. 2 (b), look over from the rounded bottom surface of prism of corner cube 1,1 three reflectings surface of prism of corner cube are all divided into Liang Gezi district, are followed successively by the first subregion 1-1, the second subregion 1-2, the 3rd subregion 1-3, the 4th subregion 1-4, the 5th subregion 1-5 and the 6th subregion 1-6 territory clockwise.Because of its distinctive auto-collimation rear reflection characteristic, the laser that each subregion produces can be injected into the subregion output that the symmetrical projection subregion of its projection subregion is corresponding through prism of corner cube 1 after reflecting, the laser i.e. produced at the first subregion 1-1 is injected into the 4th subregion 1-4 after prism of corner cube 1, the laser that 4th subregion 1-4 produces can be injected into the first subregion 1-1, after prism of corner cube 1 equally as shown in Fig. 2 (b).In like manner, the corresponding 6th subregion 1-6 of the corresponding 5th subregion 1-5 of the second subregion 1-2, the 3rd subregion 1-3.In conjunction with this characteristic, the second corner cube 3-2 is placed in the 3rd subregion 1-3, the end of the 4th resonant optical path corresponding for subregion 1-4, the first corner cube 3-1 is placed in the 5th subregion 1-5, the end of the 6th resonant optical path corresponding for subregion 1-6, making the laser of the 4th subregion 1-4 generation and the laser of the 3rd subregion 1-3 generation mutually inject, laser and the laser of the 5th subregion 1-5 generation that the 6th subregion 1-6 produces mutually inject.Resonator cavity tail mirror 4-2 is placed in the end of the corresponding resonant optical path placing resonator cavity outgoing mirror 4-1, the second subregion 1-2 in the end of the corresponding resonant optical path of the first subregion 1-1, makes whole light path form closed loop feedback vibration, and Output of laser.
So, as long as being respectively provided with laser medium 2(the first laser medium 2-1～the 6th laser medium 2-6 on six articles of resonant optical paths that this light path is vertical with prism of corner cube 1 end face), just can realize array laser in a space the least and fold laser output from retraining many journeys, as shown in Figure 3.Simultaneously as the symmetry of prism of corner cube self, in the volume of a laser instrument, realize the extension of more multichannel array laser the most easily, such as 3 road laser mediums 2 of arranging in a sub regions, as shown in Figure 4 (b).
In above-mentioned steps, prism of corner cube 1 can be solid pyramid or hollow pyramid；Laser medium 2 structure can be pole or lath etc., and material can be chosen as required, and quantity may be greater than the random natural number equal to 2；Corner cube 3 can be corner cube or other play the optical module of backward turnover light path；The transmitance of resonator mirror 4 can be different value, thus forms single aperture output or Based on Dual-Aperture output, eyeglass that its form can have any shape or film layer.
The pumping system of laser crystal is not required by the present invention.
Specific embodiment described herein is only to present invention spirit explanation for example.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by those skilled in the art, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Claims (4)
1. array laser based on prism of corner cube is from constraint many journeys fold resonator, including prism of corner cube (1), laser medium (2), corner cube (3), resonator cavity outgoing mirror (4-1) resonant cavity tail mirror (4-2)；It is characterized in that: each mirrored sides of prism of corner cube (1) is divided into several subregions respectively, the subregion of each side of prism of corner cube (1) projection subregion on the bottom surface of prism of corner cube (1) centrosymmetry two-by-two centered by subpoint on the bottom surface of prism of corner cube (1) of the cone point of prism of corner cube (1), one of them subregion as outgoing subregion, from the laser of outgoing subregion outgoing along resonant optical path corresponding to outgoing subregion through resonator cavity outgoing mirror (4-1) part outgoing, residue laser incides outgoing subregion through the resonant optical path that outgoing subregion is corresponding after resonator cavity outgoing mirror (4-1) reflects；The adjacent sub regions of outgoing subregion is as afterbody subregion, it is totally reflected, through resonator cavity tail mirror (4-2), the resonant optical path incidence afterbody subregion that tailing edge afterbody subregion is corresponding along the resonant optical path that afterbody subregion is corresponding from the laser of afterbody subregion reflection, incide the laser-bounce of subregion to centrosymmetric subregion, the laser of the subregion reflection of non-outgoing subregion and non-afterbody subregion incides adjacent non-outgoing subregion and the subregion of non-afterbody subregion through corner cube (3), laser medium (2) it is provided with on the resonant optical path that each sub regions is corresponding.
A kind of array laser based on prism of corner cube the most according to claim 1 is from constraint many journeys fold resonator, it is characterized in that: each side of described prism of corner cube (1) is all divided into two sub regions, each sub regions is followed successively by the first subregion (1-1), the second subregion (1-2), the 3rd subregion (1-3), the 4th subregion (1-4), the 5th subregion (1-5) and the 6th subregion (1-6) clockwise；Centered by the cone point of prism of corner cube (1) subpoint on the bottom surface of prism of corner cube (1), the projection subregion of the first subregion (1-1) and the projection subregion centrosymmetry of the 4th subregion (1-4), the projection subregion of the second subregion (1-2) and the projection subregion centrosymmetry of the 5th subregion (1-5), the projection subregion of the 3rd subregion (1-3) and the projection subregion centrosymmetry of the 6th subregion (1-6), the first subregion (1-1) is as outgoing subregion；Second subregion (1-2) is as afterbody subregion.
A kind of array laser based on prism of corner cube the most according to claim 1 is from constraint many journeys fold resonator, and prism of corner cube (1) is solid pyramid or hollow pyramid, and corner cube (3) is corner cube (3) or corner cube prism or other refractive power devices.
A kind of array laser based on prism of corner cube the most according to claim 1 is from constraint many journeys fold resonator, and resonator cavity outgoing mirror (4-1) resonant cavity tail mirror (4-2) is two independent chamber mirrors or the negative and positive mirror of integration.
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Cited By (5)
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| CN107248693A (en) * | 2017-06-08 | 2017-10-13 | 中国人民解放军武汉军械士官学校 | A kind of adaptive drive device based on prism of corner cube coherent combining laser device |
| CN109217087A (en) * | 2018-09-30 | 2019-01-15 | 江苏亮点光电科技有限公司 | A kind of laser light path system |
| CN110289542A (en) * | 2019-07-04 | 2019-09-27 | 南京信息工程大学 | A kind of 2 based on pyramid annular chamber μm Gao Zhongying injection frequency locking laser |
| CN112490838A (en) * | 2020-11-30 | 2021-03-12 | 北京超快光子科技有限公司 | Regenerative amplification resonant cavity and laser system using same |
| CN117239532A (en) * | 2023-11-16 | 2023-12-15 | 长春理工大学 | Fundamental mode light beam control device based on hexagonal prism cavity and output method |
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| CN117239532A (en) * | 2023-11-16 | 2023-12-15 | 长春理工大学 | Fundamental mode light beam control device based on hexagonal prism cavity and output method |
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Application publication date: 20160921 |