CN207183786U - A kind of slab laser of high-energy high light beam quality - Google Patents
A kind of slab laser of high-energy high light beam quality Download PDFInfo
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- CN207183786U CN207183786U CN201720816755.8U CN201720816755U CN207183786U CN 207183786 U CN207183786 U CN 207183786U CN 201720816755 U CN201720816755 U CN 201720816755U CN 207183786 U CN207183786 U CN 207183786U
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Abstract
It the utility model is related to technical field of solid laser, more particularly to a kind of slab laser of high-energy high light beam quality.Including total reflective mirror a, quarter-wave plate a, slab crystal, 45 ° of polarizers, electro-optical Q-switch, aperture diaphragm, the total reflective mirror b set gradually along light path, and 45 ° total reflective mirror, the output coupling mirrors vertical with 45 ° of polarizers；The slab crystal indium foil be welded on red copper it is heat sink on carry out conduction cooling, laser forms " V " font light path in slab crystal；The hot spot for making directly to export using the limitation of slab crystal face size is square, and aperture diaphragm is placed in a wherein arm afterwards carries out transverse mode selection, and to export the circle hot spot of high light beam quality, another arm is exported after 45 ° of polarizers by output coupling mirror.The utility model can export the laser of high-energy while high light beam quality is ensured.
Description
Technical field
It the utility model is related to technical field of solid laser, more particularly to a kind of slab laser of high-energy high light beam quality
Device.
Background technology
With the high speed development of laser technology, the laser of high light beam quality is in fields such as biology, medical science, military affairs, industry
Huge application value is inside shown, is more increased for the demand of the laser of high light beam quality.But for conventional laser
For device, excellent beam quality often conflicts with big energy output, can not take into account beam quality and output energy.
Common lasing material is usually bar-shaped or lath-shaped, for rhabdolith because the aperture limitation of its own is exportable
The excellent circular light spot of beam quality, but because its side is column, it has not been convenient to the coupling matching of pump light, reduce pumping utilization
Rate, on the other hand be also inconvenient to need the heat loss through conduction of good contact, therefore usually by the way of water cooling, increase laser system
The volume of system and then increase cost；For lath-shaped crystal, because its side be it is square, can well with face-pumping semiconductor
Pump coupling is carried out, the utilization to pump light is more abundant, while is also convenient for carrying out conduction cooling with contact surface, but it is directly defeated
The laser facula gone out is bar shaped, and can exist simultaneously unwanted oscillation thus beam quality it is very poor, according to Z-shaped light path in both sides
Though face, which is transmitted, can obtain good beam quality but its pumping utilization rate reduces again, while also considerably increases crystal and add
Work and the difficulty of light path adjustment.
The content of the invention
For overcome the deficiencies in the prior art, the utility model provides a kind of slab laser of high-energy high light beam quality
Device.The laser of high-energy can be exported while high light beam quality is ensured.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of slab laser of high-energy high light beam quality, including set gradually along light path total reflective mirror a, a quarter
Wave plate a, slab crystal, 45 ° of polarizers, electro-optical Q-switch, aperture diaphragm, total reflective mirror b, and 45 ° vertical with 45 ° of polarizers
Total reflective mirror, output coupling mirror；The slab crystal indium foil be welded on red copper it is heat sink on carry out conduction cooling, laser is in slab crystal
Interior formation " V " font light path；The hot spot for making directly to export using the limitation of slab crystal face size is square, afterwards wherein
In one arm place aperture diaphragm carry out transverse mode selection, to export the circle hot spot of high light beam quality, another arm after 45 ° of polarizers,
Exported by output coupling mirror.
The total reflective mirror a, total reflective mirror b, 45 ° of total reflective mirrors, output coupling mirror are plano lens, concavees lens or convex lens.
The lumen type of the laser is straight chamber, v-shaped cavity, L-type chamber, Z-type chamber or ring-like chamber.
The slab crystal is Nd:YAG crystal, Nd:YVO4 crystal, Nd:GGG crystal, Nd:YLF crystal, Nd:GdVO4 is brilliant
Body, Nd:YAP crystal, Nd:LuvO4 crystal or Yb:YAG crystal.
Wavelength is 808nm, 880nm, 914nm, 938nm, 940nm or 946nm centered on the pumping source of the laser
Pumping source.
The pump mode of the laser is profile pump.
The housing of the laser is made using 7050 aircraft aluminum material.
Compared with prior art, the beneficial effects of the utility model are：
1st, the utility model makes full use of the pumping area of lath-shaped crystal to obtain big energy output；
2nd, the utility model passes through crystal, fully reduction by four times in a manner of cross-polarization in a cycle of oscillation inner light beam
Distortion, improves beam quality caused by thermally induced birefringence；
3rd, the utility model places diaphragm by the arm of light path one and carries out modeling, to export excellent circular low-order mode light beam；
4th, the utility model utilizes the big area of dissipation of slab crystal, and the volume of laser is reduced using air-cooled design,
Using flexible.
Brief description of the drawings
Fig. 1 is the utility model optical path structure schematic diagram；
Fig. 2 is the utility model slab crystal inner light beam distribution schematic diagram；
Fig. 3 is the connected mode schematic diagram of the utility model slab crystal and pumping semiconductor chip.
In figure：4-45 ° of polarizer 5- quarter-wave plates b of 1- total reflective mirror a 2- quarter-wave plate a 3- slab crystals
6- electro-optical Q-switch 7- aperture diaphragm 8- total reflective mirror b 9-45 ° total reflective mirror 10- output coupling mirror 11- emitting semiconductor cores
Piece 12- red coppers are heat sink
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
A kind of slab laser of high-energy high light beam quality, Fig. 1 are the main optical path of laser, and laser resonant cavity is by complete
Anti- mirror a1, total reflective mirror b8 and output coupling mirror 10 form.Laser is worked using electric-optically Q-switched mode, by 45 ° of 4, four points of polarizers
One of wave plate b5, electro-optical Q-switch 6 collectively constitute electric-optically Q-switched system, light beam is passing through quarter-wave plate a2 rear polarizer sides twice
To being rotated by 90 °, exported after 45 ° of polarizers 4 reflex to 45 ° of total reflective mirrors 9 through output coupling mirror 10.Lath is passed twice through in light beam
During crystal 3, light beam is limited by crystal edge, forms a square hot spot, the laser polarization during passing twice through
Direction is mutually orthogonal, counteracts and is distorted caused by thermally induced birefringence, then ensures maximum norm by the modeling effect of aperture diaphragm 7
Outputting high quality light beam while volume.
Total reflective mirror a is level crossing, and total reflective mirror b is level crossing, and 45 ° of total reflective mirrors are level crossing, and output coupling mirror is plano lens.
Slab crystal is Nd:YAG crystal, wavelength is 808nm centered on the pumping source of laser, and the pump mode of laser is side pump
Pu.The lumen type of laser is v-shaped cavity.
The distribution of the inner light beam of slab crystal 3 is denoted in Fig. 2, the distribution of light beam occupies the overwhelming majority of slab crystal 3
Area, take full advantage of the pumping of crystal.In Fig. 3, the pump light that emitting semiconductor chip 11 is launched fully incides lath
On crystal 3, its most of energy is by absorption of crystal.Red copper is heat sink to fix crystalline substance between 12 and slab crystal 3 by way of indium weldering
Body ensure that the radiating of crystal simultaneously, and heat sink lower section carries out heat conduction by temperature controlling device and fan.
Laser enclosure is made using 7050 aircraft aluminum material, has high intensity and anti-strip corrosion and resistance to stress rotten
The performance that eating off is split, there is good mechanicalness.
The utility model makes full use of the pumping area of lath-shaped crystal 3 to obtain big energy output；The utility model exists
One cycle of oscillation inner light beam four times in a manner of cross-polarization sufficiently lower abnormal caused by thermally induced birefringence by crystal
Become, improve beam quality；The utility model places diaphragm by the arm of light path one and carries out modeling, to export excellent circular low order
Mould light beam；The utility model is reduced the volume of laser using air-cooled design, made using the big area of dissipation of slab crystal 3
With flexible.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (7)
1. a kind of slab laser of high-energy high light beam quality, it is characterised in that the laser includes setting successively along light path
Total reflective mirror a, quarter-wave plate a, slab crystal, 45 ° of polarizers, electro-optical Q-switch, aperture diaphragm, the total reflective mirror b put, and
45 ° total reflective mirror, the output coupling mirrors vertical with 45 ° of polarizers；The slab crystal indium foil be welded on red copper it is heat sink on passed
But, laser forms " V " font light path to conduction cooling in slab crystal；The light for making directly to export using the limitation of slab crystal face size
Spot is square, and aperture diaphragm is placed in a wherein arm afterwards carries out transverse mode selection, to export the circle hot spot of high light beam quality,
Another arm is exported after 45 ° of polarizers by output coupling mirror.
2. the slab laser of a kind of high-energy high light beam quality according to claim 1, it is characterised in that described to be all-trans
Mirror a, total reflective mirror b, 45 ° of total reflective mirrors, output coupling mirror are plano lens, concavees lens or convex lens.
A kind of 3. slab laser of high-energy high light beam quality according to claim 1, it is characterised in that the laser
The lumen type of device is straight chamber, v-shaped cavity, L-type chamber, Z-type chamber or ring-like chamber.
4. according to a kind of slab laser of high-energy high light beam quality described in claim 1, it is characterised in that the lath is brilliant
Body is Nd:YAG crystal, Nd:YVO4 crystal, Nd:GGG crystal, Nd:YLF crystal, Nd:GdVO4 crystal, Nd:YAP crystal, Nd:
LuvO4 crystal or Yb:YAG crystal.
5. according to a kind of slab laser of high-energy high light beam quality described in claim 1, it is characterised in that the laser
Pumping source centered on wavelength be 808nm, 880nm, 914nm, 938nm, 940nm or 946nm pumping source.
A kind of 6. slab laser of high-energy high light beam quality according to claim 1, it is characterised in that the laser
The pump mode of device is end pumping or profile pump.
A kind of 7. slab laser of high-energy high light beam quality according to claim 1, it is characterised in that the laser
The housing of device is made using 7050 aircraft aluminum material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720816755.8U CN207183786U (en) | 2017-07-07 | 2017-07-07 | A kind of slab laser of high-energy high light beam quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720816755.8U CN207183786U (en) | 2017-07-07 | 2017-07-07 | A kind of slab laser of high-energy high light beam quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207183786U true CN207183786U (en) | 2018-04-03 |
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ID=61735483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720816755.8U Active CN207183786U (en) | 2017-07-07 | 2017-07-07 | A kind of slab laser of high-energy high light beam quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207183786U (en) |
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2017
- 2017-07-07 CN CN201720816755.8U patent/CN207183786U/en active Active
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