CN204088874U - A kind of array conjugate imaging diode laser spectrum synthesizing optical device - Google Patents
A kind of array conjugate imaging diode laser spectrum synthesizing optical device Download PDFInfo
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- CN204088874U CN204088874U CN201420550990.1U CN201420550990U CN204088874U CN 204088874 U CN204088874 U CN 204088874U CN 201420550990 U CN201420550990 U CN 201420550990U CN 204088874 U CN204088874 U CN 204088874U
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Abstract
The utility model provides a kind of technical scheme of array conjugate imaging diode laser spectrum synthesizing optical device, the diode laser that the program includes the Spectral beam combining that can realize diode laser folds battle array, slow axis transition mast lens, fast jack-post lens arra, reflective planar grating, external cavity mirror, and diode laser is folded battle array and included multiple diode laser linear array; The light path of the exiting surface of diode laser linear array is provided with fast axis collimation lenticule; The laser beam that diode laser linear array sends injects external cavity mirror through after fast axis collimation lenticule, slow axis transition mast lens, fast jack-post lens arra and reflective planar grating successively, can eliminate diode laser linear array " smile " effect and diode laser and fold the impact of battle array fast axle directive property error on Spectral beam combining efficiency and beam quality.
Description
Technical field
The utility model relates to field of laser device technology, especially a kind of array conjugate imaging diode laser spectrum synthesizing optical device.
Background technology
In the prior art, known technology is, diode laser is the most efficient current lasing light emitter, there is the series of advantages such as wavelength cover is wide, volume is little, lightweight, price is low, reliability is high, but high power diode laser beam quality is poor at present, the angle of divergence is large, limits its application.Spectral beam combining technology directly utilizes diode laser to form high efficiency, compact laser system and not by the transfer process at line pump Pu, is one of the technique direction being hopeful to realize high efficiency, high-brightness diode Laser output most.Spectral beam combining technology can make the beam quality of synthetic laser suitable with the sub-luminescence unit participating in synthesizing, compensate for the shortcoming that diode laser light beam quality is poor, substantially increase the luminosity of diode laser, " high brightness wavelength synthesized semiconductor laser linear array " (High-Brightness Wavelength Beam Combined Semiconductor Laser Diode Arrays by name, Robin K. Huang etal. IEEE PHOTONICS TECHNOLOGY LETTERS, 2007, 19 (4), article 209-211.) has been described in detail the principle that grating external-cavity method diode laser spectrum synthesizes." smile " effects Spectral beam combining efficiency of diode laser, luminescence unit can be caused time serious cannot to participate in synthesis, " folding the 1kw full-optical-fiber laser of battle array as pumping source with Spectral beam combining diode laser " (1-kilowatt CW all-fiber laser oscillator pumped with wavelength-beam-combined diode stacks by name, Y. Xiao, F. Brunet, etal. OPTICS EXPRESS, 2012, 20, (3), 3296-3301) describe diode laser linear array " smile " effect to the impact of Spectral beam combining.In order to realize higher laser output power, need to adopt diode laser to fold battle array as Spectral beam combining light source, Spectral beam combining is very strict in the directive property error requirements of quick shaft direction to each diode laser linear array in folded battle array, this proposes high requirement to the encapsulation that diode laser folds battle array, Project Realization difficulty is comparatively large, and this is the weak point existing for prior art.
Utility model content
The purpose of this utility model, be exactly for the deficiency existing for prior art, in order to reduce diode laser linear array " smile " effect and folded battle array in the impact of quick shaft direction directive property error on Spectral beam combining efficiency and beam quality, reduce the encapsulation technology difficulty that diode laser folds battle array, and a kind of technical scheme of array conjugate imaging diode laser spectrum synthesizing optical device is provided, the program can be eliminated diode laser linear array " smile " effect and diode laser and fold the impact of battle array fast axle directive property error on Spectral beam combining efficiency and beam quality.
This programme is achieved by the following technical measures:
A kind of array conjugate imaging diode laser spectrum synthesizing optical device, the diode laser including the Spectral beam combining that can realize diode laser folds battle array, slow axis transition mast lens, fast jack-post lens arra, reflective planar grating, external cavity mirror, and diode laser is folded battle array and included multiple diode laser linear array; The light path of the exiting surface of diode laser linear array is provided with fast axis collimation lenticule; The laser beam that diode laser linear array sends injects external cavity mirror through after fast axis collimation lenticule, slow axis transition mast lens, fast jack-post lens arra and reflective planar grating successively.
Preferred as this programme: the exiting surface of diode laser linear array is arranged on the lenticular front focal plane of fast axis collimation.
Preferred as this programme: the spacing of fast axis collimation lenticule and fast axle lens arra is both focal length sums.
Preferred as this programme: external cavity mirror is arranged on the back focal plane of fast jack-post lens arra
Preferred as this programme: the sub-lens number of fast jack-post lens arra is no less than the number of diode laser linear array, and all corresponding with a sub-lens of fast jack-post lens arra and both common optical axis of every a slice diode laser linear array.
Preferred as this programme: the material of fast jack-post lens arra is optical glass or optical crystal, the plated surface anti-reflection film of resistance to high light.
Preferred as this programme: diode laser linear array exiting surface and external cavity mirror form Nonimage Conjugate Relations.
Its general principle of this programme is: utilize the optical elements such as slow axis transition mast lens, grating, external cavity mirror on the slow-axis direction of diode laser, carry out Spectral beam combining, diode laser linear array exiting surface and raster center are placed on the focal plane, front and back of slow axis transition mast lens respectively, the laser that diode laser linear array diverse location luminescence unit is launched is incident upon on grating with different angles by slow axis transition mast lens, guarantees that each light beam is overlapping on grating face simultaneously.The laser sent from diode laser linear array is through slow axis lens, focus on diffraction grating, owing to often restrainting the laser arriving grating, there is different incidence angles and wavelength, after optical grating diffraction can coaxial transmission to external cavity mirror, the effect of external cavity mirror is to provide feedback laser and realizes the output of laser.Fold on the quick shaft direction of battle array at diode laser, the exiting surface of diode laser linear array is placed on the front focal plane of fast axis collimation lens, the sub-lens of fast jack-post lens arra and the fast axis collimation lens of diode laser linear array real focus altogether, external cavity mirror is placed on the back focal plane of fast jack-post lens arra.The fast axis collimation lens of every sheet diode laser linear array is corresponding with a sub-lens of fast jack-post lens arra respectively, both form imaging system, diode laser folds exiting surface and external cavity mirror thing and the picture each other of each diode laser linear array in battle array, form conjugate imaging relation, even if diode laser linear array exists " smile " and fast axle error in pointing, external cavity mirror feedback light echo also can turn back in diode laser linear array completely.
The beneficial effect of this programme can be learnt according to describing of such scheme, diode laser linear array " smile " effect and diode laser is inhibit to fold battle array fast axle directive property error to the impact of combined coefficient, beam quality, solve diode laser and fold the problem that battle array is difficult to realize spectrum locking, improve efficiency and the beam quality of diode laser spectrum synthesis, and enhance the reliability of system; Reduce the technical requirement of diode laser linear array " smile " and diode laser being folded to battle array fast axle directive property error, reduce the encapsulation difficulty that diode laser folds battle array, be easy to produce, cost is low.
As can be seen here, the utility model compared with prior art, has outstanding substantive distinguishing features and progress significantly, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is light channel structure schematic diagram of the present utility model.
Fig. 2 is image optics schematic diagram of the present utility model.
Fig. 3 is the structural representation of embodiment 2 of the present utility model.
Fig. 4 is the structural representation of embodiment 3 of the present utility model.
In figure, 1,14,17 battle array is folded for diode laser, 2 is slow axis transition mast lens, and 3 is fast jack-post lens arra, and 4 is reflective planar grating, 5 is external cavity mirror, 6 is fast jack-post lens arra, and 7,8,9 is diode laser linear array, and 10,11,12 is fast axis collimation lenticule, 13 is transmission-type plane grating, and 15,16 is segmented mirror.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Embodiment 1
Fig. 1 is array conjugate imaging diode laser spectrum combining optical structural representation of the present utility model.
Fig. 2 is array conjugate imaging optical schematic diagram of the present utility model.
In FIG, array conjugate imaging diode laser spectrum combining optical of the present utility model comprise diode laser linear array fold battle array 1, slow axis transition mast lens 2, fast jack-post lens arra 3, reflective planar grating 4, external cavity mirror 5. fast jack-post lens arra 6.
In fig. 2, the diode laser that the utility model uses is folded battle array and is comprised diode laser linear array (7,8,9), fast axis collimation lenticule (10,11,12).In the present embodiment, diode laser is folded battle array and is superposed on quick shaft direction by 3 diode laser linear arrays and form, Center Gap between 3 diode laser linear arrays is all 3mm, every a slice diode laser linear array is equipped with a fast axis collimation lenticule, and the exiting surface of diode laser linear array is on the lenticular front focal plane of fast axis collimation.
Described secondary laser linear array folds the exiting surface of battle array 1 on the front focal plane of slow axis transition mast lens 2, and the center of reflective planar grating 4 is in the back focus of slow axis transition mast lens 2.External cavity mirror 5 is on the back focal plane of fast jack-post lens arra 3.
In fig. 2, fast axis collimation lenticule (10,11,12) is confocal with the sub-lens of fast jack-post lens arra 3, both spacing are the focal length sums of the lenticular focal length of fast axis collimation and fast jack-post lens arra, fast axis collimation lenticule (10,11,12) forms imaging optical system with 3 sub-lens of fast jack-post lens arra respectively, the exiting surface of diode laser linear array (7,8,9) and external cavity mirror 5 thing and picture each other.
Embodiment 2
Embodiment illustrated in fig. 3 identical with the basic structure of the present embodiment 1, difference is: embodiment 1 midplane grating adopts reflective planar grating 4, adopts transmission-type plane grating 13 in the present embodiment.
Embodiment 3
Embodiment illustrated in fig. 4 identical with the basic structure of embodiment 1, difference is: only use 1 diode laser to fold battle array 1 in embodiment 1 and participate in Spectral beam combining, and the present embodiment adopts segmented mirror (15,16) that diode laser is folded the laser that battle array (14,17) is spliced into the outgoing of same direction on slow-axis direction.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (7)
1. an array conjugate imaging diode laser spectrum synthesizing optical device, the diode laser including the Spectral beam combining that can realize diode laser folds battle array, slow axis transition mast lens, fast jack-post lens arra, reflective planar grating, external cavity mirror, it is characterized in that: described diode laser is folded battle array and included multiple diode laser linear array; The light path of the exiting surface of described diode laser linear array is provided with fast axis collimation lenticule; The laser beam that described diode laser linear array sends injects external cavity mirror through after fast axis collimation lenticule, slow axis transition mast lens, fast jack-post lens arra and reflective planar grating successively.
2. a kind of array conjugate imaging diode laser spectrum synthesizing optical device according to claim 1, is characterized in that: the exiting surface of described diode laser linear array is arranged on the lenticular front focal plane of fast axis collimation.
3. a kind of array conjugate imaging diode laser spectrum synthesizing optical device according to claim 1, is characterized in that: the spacing of described fast axis collimation lenticule and fast axle lens arra is both focal length sums.
4. a kind of array conjugate imaging diode laser spectrum synthesizing optical device according to claim 1, is characterized in that: described external cavity mirror is arranged on the back focal plane of fast jack-post lens arra.
5. a kind of array conjugate imaging diode laser spectrum synthesizing optical device according to claim 1, it is characterized in that: the sub-lens number of described fast jack-post lens arra is no less than the number of diode laser linear array, and all corresponding with a sub-lens of fast jack-post lens arra and both common optical axis of every a slice diode laser linear array.
6. a kind of array conjugate imaging diode laser spectrum synthesizing optical device according to claim 1, is characterized in that: the material of described fast jack-post lens arra is optical glass or optical crystal, the plated surface anti-reflection film of resistance to high light.
7. a kind of array conjugate imaging diode laser spectrum synthesizing optical device according to claim 1, is characterized in that: diode laser linear array exiting surface and external cavity mirror form Nonimage Conjugate Relations.
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| CN201420550990.1U CN204088874U (en) | 2014-09-24 | 2014-09-24 | A kind of array conjugate imaging diode laser spectrum synthesizing optical device |
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| CN201420550990.1U CN204088874U (en) | 2014-09-24 | 2014-09-24 | A kind of array conjugate imaging diode laser spectrum synthesizing optical device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201565A (en) * | 2014-09-24 | 2014-12-10 | 中国工程物理研究院应用电子学研究所 | Array type conjugate imaging diode laser spectrum synthesis optical device |
| CN106532435A (en) * | 2017-01-05 | 2017-03-22 | 苏州长光华芯光电技术有限公司 | Semiconductor laser array beam combining device |
-
2014
- 2014-09-24 CN CN201420550990.1U patent/CN204088874U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201565A (en) * | 2014-09-24 | 2014-12-10 | 中国工程物理研究院应用电子学研究所 | Array type conjugate imaging diode laser spectrum synthesis optical device |
| CN104201565B (en) * | 2014-09-24 | 2017-04-19 | 中国工程物理研究院应用电子学研究所 | Array type conjugate imaging diode laser spectrum synthesis optical device |
| CN106532435A (en) * | 2017-01-05 | 2017-03-22 | 苏州长光华芯光电技术有限公司 | Semiconductor laser array beam combining device |
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