CN204088871U - A kind of storied placement passive heat radiation diode laser spectrum synthesizing optical device - Google Patents
A kind of storied placement passive heat radiation diode laser spectrum synthesizing optical device Download PDFInfo
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- CN204088871U CN204088871U CN201420551000.6U CN201420551000U CN204088871U CN 204088871 U CN204088871 U CN 204088871U CN 201420551000 U CN201420551000 U CN 201420551000U CN 204088871 U CN204088871 U CN 204088871U
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Abstract
The utility model provides the technical scheme of a kind of storied placement passive heat radiation diode laser spectrum synthesizing optical device, the light path of the optical system of the program is divided two-layer, ground floor light path is the space splicing light path of diode laser linear array, the second layer is the Spectral beam combining light path of diode laser, realize light path by two panels speculum between ground floor and the second layer to connect, the laser after Spectral beam combining exports from window mirror or is coupled into optical fiber and exports.The storied placement passive heat radiation diode laser spectrum synthetic laser system reliability of the utility model design is high, compact conformation, and volume is little, can be used as industrial processes or military high reliability LASER Light Source.
Description
Technical field
The utility model relates to laser technique application, especially a kind of storied placement passive heat radiation diode laser spectrum synthesizer.
Background technology
In the prior art, known technology is, 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, the beam quality of synthetic laser can be made 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.At present, existing diode laser spectrum synthetic laser system adopts the method for active heat removal usually, micro-channel heat sink liquid cooling endless form is used to dispel the heat to diode laser linear array, the shortcoming of this radiating mode is that cooling system volume is large, maintaining is complicated, reliability is lower, 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, and the technical scheme of a kind of storied placement passive heat radiation diode laser spectrum synthesizer is provided, the program adopts passive radiating mode, diode laser linear array adopts the heat sink radiating mode that reliability is high, Spectral beam combining light path adopts spatial arrangement mode, can reduce the volume of diode laser spectrum synthetic laser system.
This programme is achieved by the following technical measures:
A kind of storied placement passive heat radiation diode laser spectrum synthesizer, includes ground floor structure base slab and second layer structure base slab; Ground floor structure base slab is provided with diode laser linear array, segmented mirror, plane cold drawing and lower speculum; Second layer structure base slab is provided with upper reflector, slow axis transition mast lens, refluxing reflection mirror, plane grating, external cavity mirror; Described diode laser linear array adopts heat sink radiating mode, is fixed on plane cold drawing; The laser beam that diode laser linear array sends is implementation space splicing on diode laser linear array quick shaft direction after segmented mirror is launched, diode laser linear array light-emitting area and spliced laser beam output face aplanatism arrange, spliced laser beam is directive upper reflector after lower speculum reflection, upper reflector by radiating laser beams to slow axis transition mast lens, laser beam through after slow axis transition mast lens after refluxing reflection mirror is launched directive plane grating, laser beam exports through external cavity mirror through after plane grating.
Preferred as this programme: segmented mirror and one_to_one corresponding equal with diode laser linear array quantity, segmented mirror all changes the angle of emergence of incoming laser beam on the fast axle and slow axis both direction of secondary laser linear array.
Preferred as this programme: transferred on quick shaft direction 90 ° by the laser beam that lower speculum reflects and incide upper reflector, laser beam optical axis after upper reflector reflection is parallel with second layer structure base slab.
Preferred as this programme: plane grating is plane of reflection grating or transmission plane grating, and material is optical glass or optical crystal.
Preferred as this programme: second layer structure base slab is provided with window mirror; Laser beam through external cavity mirror exports from window mirror after refluxing reflection mirror refraction.
Preferred as this programme: second layer structure base slab is provided with shaping lens group, focus lens group and optical fiber; Laser beam through external cavity mirror exports through injecting optical fiber after shaping lens group and focus lens group successively.
Preferred as this programme: the quantity of segmented mirror and diode laser linear array is at least 1 group.
In this programme, light path is divided two-layer, and ground floor is the space splicing light path of diode laser linear array, and the second layer is diode laser spectrum synthesis light path, realizes light path connect between ground floor and the second layer by two panels speculum.
In ground floor, adopt the diode laser linear array of the passive heat radiation of multi-disc as the light source of Spectral beam combining, every sheet diode laser linear array is equipped with fast axis collimation lenticule and slow axis collimation microlens.Diode laser linear array divides two groups, and each group first utilizes segmented mirror in the enterprising row space splicing of diode laser linear array quick shaft direction, and two groups of diode laser linear arrays are spliced on slow-axis direction again.Diode laser linear array in each group is all fixed on same plane cold drawing, diode laser linear array light-emitting area and spliced Laser output face aplanatism arrange, the each corresponding one piece of segmented mirror of every a slice diode laser linear array, segmented mirror all changes the angle of emergence of laser on the fast axle and slow axis both direction of secondary laser linear array, and the laser that diode laser linear array sends realizes high duty ratio splicing at quick shaft direction after segmented mirror reflection.
The laser of each block segmented mirror reflection in the identical angle of quick shaft direction surface thereof, to avoid the segmented mirror in subsequent optical path, the angle radian of reflects laser
θcomputing formula is as follows:
θ=d/L
Wherein,
dthe size of shoot laser on quick shaft direction of monolith diodes laser linear array;
lit is same group of segmented mirror Center Gap each other.
The quantity of diode laser linear array is determined by the light power of total light power of diode laser spectrum synthetic laser system, Spectral beam combining efficiency and diode laser linear array, and its computing formula is as follows:
M=P
total
/(P
d/
/η)
Wherein,
mthe quantity of diode laser linear array;
p total it is Output of laser gross power after synthesis;
p d/ the Output of laser power of single diode laser linear array;
ηspectral beam combining efficiency.
In the second layer, primary optics comprises slow axis transition mast lens, light path refluxing reflection mirror, plane grating, external cavity mirror, adopts grating external-cavity method to realize the Spectral beam combining of diode laser.The effect of slow axis transition mast lens collimates each luminescence unit of diode laser linear array, and be incident on grating with different angles, guarantees that each light beam is overlapping on grating face simultaneously.The front focal plane of slow axis transition mast lens overlaps with the exiting surface of a slice diode laser linear array every in ground floor, and the back focal plane of slow axis transition mast lens overlaps with the center line of plane grating.The effect of plane grating is synthesized the laser that each luminescence unit of diode laser linear array sends.
Diode laser spectrum synthetic laser system directly from window mirror Output of laser, also can be coupled into optical fiber as required.When Output of laser needs to be coupled into optical fiber, export in subsequent optical path in external cavity mirror and add shaping optical module and coupling focus optics, laser is coupled into optical fiber after shaping.
As can be seen here, compared with prior art, diode laser linear array adopts passive radiating mode to the utility model, and cooling system volume is little, is easy to safeguard, reliability is high; The light path of laser system adopts storied placement, compact conformation, and volume is little, lightweight, has outstanding substantive distinguishing features and progress significantly, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of ground floor light path of the present utility model.
Fig. 2 is the structural representation of the connection light path between ground floor of the present utility model and the second layer.
Fig. 3 is the structural representation of second layer light path in embodiment 1 of the present utility model.
Fig. 4 is the structural representation of second layer light path in embodiment 2 of the present utility model.
In figure, 1 ~ 12 is diode laser linear array, and 13 ~ 24 is segmented mirror, 25,26 is plane cold drawing, and 27 is ground floor structure base slab, and 28 is lower speculum, 29 is upper reflector, and 30 is slow axis transition mast lens, and 31,32,35 is refluxing reflection mirror, 33 is plane grating, and 34 is external cavity mirror, and 36 is window mirror, 37 is second layer structure base slab, 38 is shaping lens group, and 39 is focus lens group, and 40 is optical fiber.
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 storied placement of the present utility model passive heat radiation diode laser spectrum synthetic laser system ground floor light channel structure schematic diagram.In figure, diode laser linear array (1 ~ 12) adopts the heat sink type of cooling, the corresponding one piece of segmented mirror (13 ~ 24) of every a slice diode laser linear array (1 ~ 12).Diode laser linear array (1 ~ 6) is as first group, be fixed on plane cold drawing 25, the effect of segmented mirror (13 ~ 18) corresponding is with it the laser that reflection diode laser linear array (1 ~ 6) sends, and makes laser on the quick shaft direction of diode laser linear array (1 ~ 6), realize high duty ratio splicing; Diode laser linear array (7 ~ 12) is as second group, be fixed on plane cold drawing 26, the effect of segmented mirror (19 ~ 24) corresponding is with it the laser that reflection diode laser linear array (7 ~ 12) sends, and makes laser on the quick shaft direction of diode laser linear array (7 ~ 12), realize high duty ratio splicing; First group of diode laser linear array (1 ~ 6) and second group of diode laser linear array (7 ~ 12) laid out in parallel on slow-axis direction.
In Fig. 1, the exiting surface of diode laser linear array (1 ~ 12) is arranged to lower speculum 28 aplanatism, light path is 120mm in this example, such as, the exiting surface of diode laser linear array 6 is 20mm to the light path of segmented mirror 13, segmented mirror 13 is 100mm to the light path of lower speculum 28, and in diode laser linear array 6 to lower speculum 28, light path is 120mm.
In Fig. 1, segmented mirror (13 ~ 24) all changes the angle of emergence of laser on the fast axle and slow axis both direction of secondary laser linear array (1 ~ 12), quick shaft direction make incident laser to 0.05 radian of facing upward, other segmented mirrors staggered in subsequent optical path, slow-axis direction make incident laser transfer 90 degree.
Fig. 2 is the connection light channel structure schematic diagram between storied placement of the present utility model passive heat radiation diode laser spectrum synthetic laser system ground floor and the second layer.Lower speculum 28 is fixed on ground floor structure base slab 27, upper reflector 29 is fixed on second layer structure base slab 37, spliced laser enters upper reflector 29 after being reflected by lower speculum 28, then the optical axis being reflected rear laser by upper reflector 29 is parallel with second layer structure base slab 37.
Fig. 3 is storied placement of the present utility model passive heat radiation diode laser spectrum synthetic laser system second layer light channel structure schematic diagram.The effect of slow axis transition mast lens 30 collimates on slow-axis direction the laser that each luminescence unit of diode laser linear array (1 ~ 12) sends, and be incident on grating with different angles, guarantees that each light beam is overlapping on plane grating 33 simultaneously.The exiting surface of diode laser linear array (1 ~ 12) and plane grating 33 are placed on the focal plane, front and back of slow axis transition mast lens 30 respectively, and in this example, the focal length of slow axis transition mast lens 30 is 250mm.Laser after slow axis transition mast lens 30 collimation incides plane grating 33 with 60 degree after turnover speculum (31,32) reflection.This example midplane grating 33 adopts transmission-type plane grating, and effect is synthesized the laser that each luminescence unit of diode laser linear array sends.Laser after the effect of external cavity mirror 34 is to provide feedback laser and exports synthesis, in this example, its reflectivity is 20%.The synthetic laser that external cavity mirror 34 exports exports from window mirror 36 after refluxing reflection mirror 35 reflects.
Embodiment 2
The present embodiment comprises Fig. 1, Fig. 2, Fig. 4.Fig. 4 is the storied placement passive heat radiation diode laser spectrum synthetic laser system second layer light channel structure schematic diagram of the present embodiment.The present embodiment is identical with the basic structure of embodiment 1, and difference is: in embodiment 1, and the laser exported from external cavity mirror 34 exports from window mirror 36 after refluxing reflection mirror 35; In the present embodiment, Spectral beam combining laser coupled enters optical fiber and exports.
In Fig. 4, from external cavity mirror 34 export laser after shaping lens group 38 shaping fast axle with slow-axis direction beam divergence angle identical, laser enters focus lens group 39 after refluxing reflection mirror 35 reflects, and the effect of focus lens group 39 is that laser coupled is entered in optical fiber 40.
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. a storied placement passive heat radiation diode laser spectrum synthesizer, is characterized in that: include ground floor structure base slab and second layer structure base slab; Described ground floor structure base slab is provided with diode laser linear array, segmented mirror, plane cold drawing and lower speculum; Described second layer structure base slab is provided with upper reflector, slow axis transition mast lens, refluxing reflection mirror, plane grating, external cavity mirror; Described diode laser linear array adopts heat sink radiating mode, is fixed on plane cold drawing; The laser beam that described diode laser linear array sends is implementation space splicing on diode laser linear array quick shaft direction after segmented mirror is launched, diode laser linear array light-emitting area and spliced laser beam output face aplanatism arrange, spliced laser beam is directive upper reflector after lower speculum reflection, upper reflector by radiating laser beams to slow axis transition mast lens, laser beam through after slow axis transition mast lens after refluxing reflection mirror is launched directive plane grating, laser beam exports through external cavity mirror through after plane grating.
2. a kind of storied placement according to claim 1 passive heat radiation diode laser spectrum synthesizer, it is characterized in that: described segmented mirror and one_to_one corresponding equal with diode laser linear array quantity, segmented mirror all changes the angle of emergence of incoming laser beam on the fast axle and slow axis both direction of secondary laser linear array.
3. a kind of storied placement according to claim 1 passive heat radiation diode laser spectrum synthesizer, it is characterized in that: transferred on quick shaft direction 90 ° by the laser beam that lower speculum reflects and incide upper reflector, laser beam optical axis after upper reflector reflection is parallel with second layer structure base slab.
4. a kind of storied placement according to claim 1 passive heat radiation diode laser spectrum synthesizer, is characterized in that: described plane grating is plane of reflection grating or transmission plane grating, and material is optical glass or optical crystal.
5. a kind of storied placement according to claim 1 passive heat radiation diode laser spectrum synthesizer, is characterized in that: described second layer structure base slab is provided with window mirror; Laser beam through external cavity mirror exports from window mirror after refluxing reflection mirror refraction.
6. a kind of storied placement according to claim 1 passive heat radiation diode laser spectrum synthesizer, is characterized in that: described second layer structure base slab is provided with shaping lens group, focus lens group and optical fiber; Laser beam through external cavity mirror exports through injecting optical fiber after shaping lens group and focus lens group successively.
7. a kind of storied placement according to claim 1 passive heat radiation diode laser spectrum synthesizer, is characterized in that: the quantity of described segmented mirror and diode laser linear array is at least 1 group.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201561A (en) * | 2014-09-24 | 2014-12-10 | 中国工程物理研究院应用电子学研究所 | Laser spectrum synthesis optical device for passive heat dissipation diodes distributed layer by layer |
| CN105449524A (en) * | 2015-12-21 | 2016-03-30 | 长春理工大学 | Multiple pairs of single-tube beam-combining semiconductor laser devices of sharing multiple groups of beam splitters in plane configuration |
| CN105449523A (en) * | 2015-12-21 | 2016-03-30 | 长春理工大学 | Multiple pairs of single-tube beam-combining semiconductor laser devices with respective beam splitters in ladder configuration |
| CN105449513A (en) * | 2015-12-21 | 2016-03-30 | 长春理工大学 | Multiple pairs of single-tube beam-combining semiconductor laser devices with beam splitter sets in ladder configuration |
| CN108808436A (en) * | 2018-06-20 | 2018-11-13 | 中国工程物理研究院应用电子学研究所 | A kind of multiple beam based on tablet bundling device is total to aperture coherence synthesizing device |
-
2014
- 2014-09-24 CN CN201420551000.6U patent/CN204088871U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201561A (en) * | 2014-09-24 | 2014-12-10 | 中国工程物理研究院应用电子学研究所 | Laser spectrum synthesis optical device for passive heat dissipation diodes distributed layer by layer |
| CN104201561B (en) * | 2014-09-24 | 2017-10-27 | 中国工程物理研究院应用电子学研究所 | A kind of storied placement passively radiates diode laser spectrum synthesizing optical device |
| CN105449524A (en) * | 2015-12-21 | 2016-03-30 | 长春理工大学 | Multiple pairs of single-tube beam-combining semiconductor laser devices of sharing multiple groups of beam splitters in plane configuration |
| CN105449523A (en) * | 2015-12-21 | 2016-03-30 | 长春理工大学 | Multiple pairs of single-tube beam-combining semiconductor laser devices with respective beam splitters in ladder configuration |
| CN105449513A (en) * | 2015-12-21 | 2016-03-30 | 长春理工大学 | Multiple pairs of single-tube beam-combining semiconductor laser devices with beam splitter sets in ladder configuration |
| CN108808436A (en) * | 2018-06-20 | 2018-11-13 | 中国工程物理研究院应用电子学研究所 | A kind of multiple beam based on tablet bundling device is total to aperture coherence synthesizing device |
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