CN205195039U - Spectrum synthesis system based on multiplexing body holographic grating - Google Patents
Spectrum synthesis system based on multiplexing body holographic grating Download PDFInfo
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- CN205195039U CN205195039U CN201521072113.9U CN201521072113U CN205195039U CN 205195039 U CN205195039 U CN 205195039U CN 201521072113 U CN201521072113 U CN 201521072113U CN 205195039 U CN205195039 U CN 205195039U
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- light beam
- holographic grating
- volume holographic
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- multiplexing
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Abstract
The utility model discloses a spectrum synthesis system based on multiplexing body holographic grating, including light beam synthesis ware and multiunit light beam front processor, during the light beam synthesis ware was jeted into to light beam after light beam front processor handles, the light beam follow light beam synthesis ware after synthetic jetted out, the multiplexing body holographic grating that the light beam synthesis ware includes first adjustment platform and sets up at first adjustment bench, the light beam front processor of every group includes that a laser instrument that is used for producing the light beam, one carry out the collimation to the light beam collimating system, one are used for adjusting the position of speculum and the the second adjustment platform of angle with light beam reflection to multiplexing body holographic grating's speculum and one. The utility model adopts the above structure, can make the system architecture simple relatively, easy operation is convenient, ensures simultaneously that the diffraction efficiency of light beam is higher.
Description
Technical field
The utility model relates to Spectral beam combining field, is specifically related to a kind of Spectral beam combining system based on multiplexing volume holographic grating.
Background technology
In order to obtain the Laser output of high power, high light beam quality, carrying out synthesis to multiple laser is a kind of effective method.Light beam synthesis is divided into optics coherence tomography and Incoherent beam combining two kinds, although optics coherence tomography can obtain more high-power synthesis light beam, participate in closing the phase place of Shu Jiguang to ensure coherence, system complex owing to needing each bundle of strict control, technical difficulty is large, not easily realizes.
The power output of spectrum synthesis is proportional to the number of light beams participating in spectrum synthesis, therefore, more high-power Laser output be obtained, the number of light beams participating in beam combination must be increased in the finite bandwidth of spectrum synthesis, this needs each light beams to have narrower spectral bandwidth, and reduces the crosstalk between each light beams.
Traditional spectrum synthesis system superposes use volume holographic grating step by step, increases a branch of light beam synthesize at every one-level body grating place, this system configuration bulky complex of synthesizing step by step, controls difficulty comparatively large, and is easily subject to the cross talk effects of body grating filtering secondary lobe.
Utility model content
The purpose of this utility model is to provide a kind of Spectral beam combining system based on multiplexing volume holographic grating, solves current Spectral beam combining system and has that combined coefficient is not high, the problem of inconvenient operation, system configuration relative complex.
The utility model for achieving the above object, realizes by the following technical solutions:
Based on the Spectral beam combining system of multiplexing volume holographic grating, comprise beam synthesis and many group light beam front-end processor, the light beam after the process of light beam front-end processor is injected in beam synthesis, and the light beam after synthesis penetrates from beam synthesis;
The multiplexing volume holographic grating that described beam synthesis comprises the first adjustment platform and is arranged on the first adjustment platform;
Often organize light beam front-end processor comprise a laser for generation of light beam, colimated light system that light beam is collimated, one beam reflection is used for adjusting the position of speculum and the second adjustment platform of angle to the speculum of multiplexing volume holographic grating and one.
In same medium, make carbon copies the volume holographic grating of Different structural parameters, this device is called multiplexed volume holographic grating, achieves the integrated of multistage grating, is conducive to the boundary reflection reducing multistage grating, reduces system bulk weight.Each road body grating all will meet Bragg condition, therefore, by designing the different grating period A of body grating at different levels
mwith vector inclination angle be
when body grating at different levels can be made to meet Bragg condition, corresponding centre wavelength is λ
m, the angle of diffraction is θ, now, and corresponding Prague incidence angle
thus body grating at different levels is all equivalent to a-road-through road on frequency spectrum, will with θ
bmthe centre wavelength of angle incidence is λ
mlight beam with diffraction angle outgoing, the light of other wavelength is still propagated along former direction.Finally, N level volume holographic grating can realize the spectrum synthesis of N+1 light beams.
Further, preferably, described first adjustment platform comprises the first displacement platform and is arranged on the first rotating platform on the first displacement platform, and the first rotating platform can move back and forth along the first displacement platform, and multiplexing volume holographic grating is arranged on the first rotating platform.
Further, preferably, described second adjustment platform comprises second moving stage 5 and is arranged on the second rotating platform in second moving stage, and the second rotating platform can move back and forth along second moving stage, and speculum is arranged on the second rotating platform.
Further, preferably, also comprise rotating platform controller and displacement platform controller, described rotating platform controller realizes the signal of telecommunication with the first rotating platform, the second rotating platform respectively and is connected, and described displacement platform controller realizes the signal of telecommunication with the first displacement platform, second moving stage respectively and is connected.
Further, preferably, also comprise dip stick, described dip stick is arranged on the light beam injection direction of multiplexing volume holographic grating.
Further, preferably, described dip stick is milimeter scale.
Further, preferably, described multiplexing volume holographic grating is multiplexing apodization grating.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model adopts the outgoing beam of colimated light system to laser strictly to collimate, ensure that each Shu Guang injecting beam synthesis has the less angle of divergence, thus ensure that the wavelength selectivity of this light beam of grating pair is narrower, and then can in finite bandwidth the grating of multiplexing more multichannel, namely synthesize more multiple laser.Simultaneously, the first adjustment platform and the second adjustment platform is adopted to carry out precise hard_drawn tuhes to the position of speculum and multiplexing volume holographic grating and angle, thus ensure that each Shu Guangjun can incide the center of multiplexing volume holographic grating, enable diffracted beam with the outgoing of maximum diffraction efficiency.
(2) the utility model adopts multiplexing apodization grating as the grating of light beam composite part, effectively can avoid the mutual interference between multiplexing volume holographic grating, play the effect of suppressed sidelobes.
(3) the utility model by arranging a dip stick in the exit direction of synthesis light beam, according to transmitted light and the position of diffraction light hot spot on dip stick of each road laser, incidence angle and the angle of diffraction can be extrapolated, when dip stick is milimeter scale, because speculum etc. is rice magnitude with the distance of dip stick, therefore angle-measurement accuracy can reach milliradian magnitude, can obtain higher certainty of measurement.
(4) the utility model only achieves Spectral beam combining with one piece of multiplexing volume holographic grating, simplifies system configuration, saves system space volume, simultaneously simple to operation.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
The name that in figure, Reference numeral is corresponding is called:
1, laser, 2, colimated light system, the 3, second rotating platform, 4, speculum, 5, second moving stage, the 6, first displacement platform, the 7, first rotating platform, 8, multiplexing volume holographic grating, 9, rotating platform controller, 10, displacement platform controller, 11, dip stick.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment:
As shown in Figure 1, the Spectral beam combining system based on multiplexing volume holographic grating described in the present embodiment, comprise beam synthesis and many group light beam front-end processor, the light beam after the process of light beam front-end processor is injected in beam synthesis, and the light beam after synthesis penetrates from beam synthesis.
Particularly, the beam synthesis multiplexing volume holographic grating 8 that comprises the first adjustment platform and be arranged on the first adjustment platform; Often organize light beam front-end processor to comprise colimated light system 2, that 1, one, a laser for generation of light beam collimates light beam beam reflection is used for adjusting the position of speculum 4 and the second adjustment platform of angle to the speculum 4 of multiplexing volume holographic grating 8 and one.
Often organize light beam front-end processor correspondence to produce, process a kind of light beam of wavelength, for wherein one group, the light beam that laser 1 produces enters into colimated light system 2, colimated light system 2 pairs of light beams strictly collimate, and the light beam after collimation is injected on speculum 4, under the reflex of speculum 4, light beam is injected on multiplexing volume holographic grating 8, under the first adjustment platform and second adjust the effect of platform, light beam is just in time injected into the center of multiplexing volume holographic grating 8, the light beam of all the other groups is equally under the effect of speculum 4, be injected into the center of multiplexing volume holographic grating 8, each Shu Guang completes light beam and synthesizes and penetrate in multiplexing volume holographic grating 8.It should be noted that, colimated light system 2 is existing structure, is usually used in beam treatment, and therefore, its concrete structure and principle just repeat no more.
Particularly, the first adjustment platform of the present embodiment can adopt following structure: the first adjustment platform comprises the first displacement platform 6 and is arranged on the first rotating platform 7 on the first displacement platform 6, first rotating platform 7 can move back and forth along the first displacement platform 6, and multiplexing volume holographic grating 8 is arranged on the first rotating platform 7.
Equally, the second adjustment platform comprises second moving stage 5 and the second rotating platform 3, second rotating platform 3 be arranged in second moving stage 5 can move back and forth along second moving stage 5, and speculum 4 is arranged on the second rotating platform 3.
Conveniently control and operate, the present embodiment also can increase rotating platform controller 9 and displacement platform controller 10, rotating platform controller 9 respectively with the first rotating platform 7, second rotating platform 3 realizes the signal of telecommunication and connects, displacement platform controller 10 respectively with the first displacement platform 6, second moving stage 5 realizes the signal of telecommunication and connects, rotating platform controller 9 and displacement platform controller 10 send different control commands respectively, make each rotating platform, displacement platform produces corresponding rotational angle or displacement, to realize the fine adjustment of light beam, and guarantee that the light beam be injected on multiplexing volume holographic grating 8 is just positioned at the center of multiplexing volume holographic grating 8, penetrate with the highest diffraction efficiency to make diffracted beam.
Convenient reckoning incidence angle and the angle of diffraction in addition, the present embodiment also increases dip stick 11, be preferably milimeter scale, dip stick 11 is arranged on the light beam injection direction of multiplexing volume holographic grating 8, according to transmitted light and the position of diffraction light hot spot on dip stick of each road laser, can extrapolate incidence angle and the angle of diffraction, when dip stick is milimeter scale, because speculum etc. is rice magnitude with the distance of dip stick, therefore angle-measurement accuracy can reach milliradian magnitude, can obtain higher certainty of measurement.
Between multiplexing volume holographic grating, occur interference mutually, the present embodiment adopts multiplexing apodization grating as the grating of beam synthesis.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection range of the present utility model.
Claims (7)
1. based on the Spectral beam combining system of multiplexing volume holographic grating, it is characterized in that: comprise beam synthesis and many group light beam front-end processor, the light beam after the process of light beam front-end processor is injected in beam synthesis, and the light beam after synthesis penetrates from beam synthesis;
Described beam synthesis comprises the first adjustment platform and is arranged on the multiplexing volume holographic grating (8) on the first adjustment platform;
Often organize light beam front-end processor comprise a laser for generation of light beam (1), colimated light system that light beam is collimated (2), one by beam reflection to the second adjustment platform for the position and angle that adjust speculum (4) of the speculum (4) of multiplexing volume holographic grating (8) and.
2. the Spectral beam combining system based on multiplexing volume holographic grating according to claim 1, it is characterized in that: described first adjustment platform comprises the first displacement platform (6) and is arranged on the first rotating platform (7) on the first displacement platform (6), first rotating platform (7) can move back and forth along the first displacement platform (6), and multiplexing volume holographic grating (8) is arranged on the first rotating platform (7).
3. the Spectral beam combining system based on multiplexing volume holographic grating according to claim 2, it is characterized in that: described second adjustment platform comprises second moving stage (5) and is arranged on the second rotating platform (3) in second moving stage (5), second rotating platform (3) can move back and forth along second moving stage (5), and speculum (4) is arranged on the second rotating platform (3).
4. the Spectral beam combining system based on multiplexing volume holographic grating according to claim 3, it is characterized in that: also comprise rotating platform controller (9) and displacement platform controller (10), described rotating platform controller (9) realizes the signal of telecommunication be connected with the first rotating platform (7), the second rotating platform (3) respectively, and described displacement platform controller (10) realizes the signal of telecommunication be connected with the first displacement platform (6), second moving stage (5) respectively.
5. the Spectral beam combining system based on multiplexing volume holographic grating according to claim 1, it is characterized in that: also comprise dip stick (11), described dip stick (11) is arranged on the light beam injection direction of multiplexing volume holographic grating (8).
6. the Spectral beam combining system based on multiplexing volume holographic grating according to claim 5, is characterized in that: described dip stick (11) is milimeter scale.
7. the Spectral beam combining system based on multiplexing volume holographic grating according to any one of claim 1 ~ 6, is characterized in that: described multiplexing volume holographic grating (8) is multiplexing apodization grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521072113.9U CN205195039U (en) | 2015-12-21 | 2015-12-21 | Spectrum synthesis system based on multiplexing body holographic grating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521072113.9U CN205195039U (en) | 2015-12-21 | 2015-12-21 | Spectrum synthesis system based on multiplexing body holographic grating |
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| CN201521072113.9U Expired - Fee Related CN205195039U (en) | 2015-12-21 | 2015-12-21 | Spectrum synthesis system based on multiplexing body holographic grating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300001A (en) * | 2016-10-11 | 2017-01-04 | 成都精密光学工程研究中心 | Optical-fiber laser Spectral beam combining device and method |
| CN109217092A (en) * | 2017-12-13 | 2019-01-15 | 中国航空制造技术研究院 | The design method and its device of two-dimentional volume holographic grating laser |
| CN112162379A (en) * | 2020-09-29 | 2021-01-01 | 中国电子科技集团公司第十一研究所 | Active blocking reflector, laser spectrum synthesis system and synthesis method |
-
2015
- 2015-12-21 CN CN201521072113.9U patent/CN205195039U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300001A (en) * | 2016-10-11 | 2017-01-04 | 成都精密光学工程研究中心 | Optical-fiber laser Spectral beam combining device and method |
| CN109217092A (en) * | 2017-12-13 | 2019-01-15 | 中国航空制造技术研究院 | The design method and its device of two-dimentional volume holographic grating laser |
| CN109217092B (en) * | 2017-12-13 | 2020-07-17 | 中国航空制造技术研究院 | Design method and device of two-dimensional volume holographic grating laser |
| CN112162379A (en) * | 2020-09-29 | 2021-01-01 | 中国电子科技集团公司第十一研究所 | Active blocking reflector, laser spectrum synthesis system and synthesis method |
| CN112162379B (en) * | 2020-09-29 | 2022-10-25 | 中国电子科技集团公司第十一研究所 | Active blocking reflector, laser spectrum synthesis system and synthesis method |
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| CF01 | Termination of patent right due to non-payment of annual fee |