CN1671012A - Lath structure type solid-state laser in edge rounding pumping form - Google Patents
Lath structure type solid-state laser in edge rounding pumping form Download PDFInfo
- Publication number
- CN1671012A CN1671012A CN 200510011574 CN200510011574A CN1671012A CN 1671012 A CN1671012 A CN 1671012A CN 200510011574 CN200510011574 CN 200510011574 CN 200510011574 A CN200510011574 A CN 200510011574A CN 1671012 A CN1671012 A CN 1671012A
- Authority
- CN
- China
- Prior art keywords
- pumping
- gain media
- structure type
- laser
- type solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 59
- 230000010355 oscillation Effects 0.000 claims abstract description 3
- 230000003287 optical effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 239000000087 laser glass Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 241000931526 Acer campestre Species 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Images
Landscapes
- Lasers (AREA)
Abstract
A chamfered pumping type stave structured solid laser is characteristic of that the at least one chamfering of said stave structure gain medium forming pumping surface to make multiple inner reflection and absorption after pumping source incoming into gain medium, said pumping surface is plane or cylinder, the primary optic axis is vertical with the pumping surface which is vertical or parallel with oscillation direction. Said invention raises efficiency and makes pumping energy uniformly distribution in gain medium.
Description
Technical field
The lath structure type solid-state laser of edge rounding pumping form belongs to the solid state laser design field, particularly the design of the pump face of solid state laser.
Background technology
The typical solid laser comprises the resonant cavity that is made of two relative speculums, and solid state gain medium is positioned at the chamber, pumping source pumping gain media, and pumping process makes the atom in the gain media transit to high level by low-lying level, keeps the operation of endovenous laser.
Pump light is coupled to gain media inside by variety of way, and the height of lasing efficiency is transformed into that part of shared ratio decision of relevant laser output by pump light.The pump light that does not convert the output laser energy to then is converted to noncoherent energy or heat.The raising of the serious limit laser device of these heats performance: since heating, the inner thermal stress that produces of gain media, and the excessive gain media that will cause of thermal stress bursts, and has therefore limited higher power input; In addition because thermal lens and thermal birefringence effect cause the laser output beam quality to descend.
In order to carry out effective thermal control management, improve input power and output beam quality, developed a kind of novel lath structure type solid-state laser.
At lath structure type solid-state laser, mainly contain following several pump mode at present: the end pumping mode, face pumping mode and side pumping mode, as shown in Figure 2,21 are face pumping, and 22 are laser output, and 23 is end pumping, and 24 is side pumping.
In the end pumping mode laser structure, pump light by coupled system from the surface feeding sputtering of battened construction gain media to gain media inside, it is long to absorb light path, thereby is fully absorbed the pumping efficiency height.But the shortcoming of this end pumping mode is: because face area is smaller, limited the input of energy, be unfavorable for the expansion of power; While coupled structure more complicated; End face also needs to plate Double-color film, and to the pump light high permeability, to the laser high reflectance, plated film requires high; The uniformity that pump energy distributes is also poor.
In the face pumping mode laser structure, pump light incides gain media inside from the upper and lower surface of battened construction gain media, and the pumping area is big, helps the expansion of power, and the distribution of pump energy is more even simultaneously.But the shortcoming of this face pumping mode is: the absorption light path of pump light is very short, can not fully be absorbed by gain media, and pumping efficiency is low.
In the side pumping mode laser structure, pump light incides gain media inside from the side of battened construction gain media, heat distributes by the upper and lower surface of lath, and keeps the temperature gradient distribution of one dimension on gain medium material, has effectively improved the thermal effect of gain medium.But because the absorption light path of pump light is shorter, can not fully be absorbed by gain media, therefore, the efficient of the laser of side pumping mode neither be very high.
What we needed is a kind of existing laser structure drawbacks limit that is not subjected to, and has high efficiency, compactedness, high-power solid state laser.
Summary of the invention
At the deficiency of existing laser structure, the invention provides a kind of lath structure type solid-state laser of novel edge rounding pumping form.Pump light incides gain media from the pump face that edge chamfering forms, and in the repeatedly total reflection of gain media inside, very long absorption light path is arranged, and absorbs fully, and good uniformity is arranged; Structure is compact, can carry out power expansion simultaneously.
The characteristics of laser proposed by the invention are, it is characterized in that, at least one edge chamfering of described lath structure type gain media forms pump face, make pumping source incide repeatedly to reflect in inside behind the gain media inside and are absorbed.
Described pump face is plane or cylinder.The primary optical axis of described pumping source is vertical with described pump face.The pump face that described edge chamfering forms is parallel with orientation of oscillation or vertical.Described pump face is coated with the anti-reflection film to the pumping wavelength high permeability.Described gain media is laser crystal medium, laser glass medium or the Plastic Lasing Material of doped with rare-earth elements.Described pumping source is the laser diode of wall scroll, is directly coupled to gain media inside, or the array of multi-stripe laser diode composition, incides gain media inside by optical coupling system.
Beneficial effect of the present invention: the edge chamfering of lath structure type solid-state laser of the present invention becomes pump face, pump light incides battened construction gain media inside from pump face, at inner full-reflection, repeatedly absorbed by gain medium, improved absorption efficiency, repeatedly absorption also makes pump energy in the inner evenly distribution of gain media, has effectively improved the efficient of laser.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is existing pump mode schematic diagram.
Fig. 3 is the cross-sectional view of strip type gain media of the present invention.
Fig. 4 is various difform edge rounding pumping faces.
Fig. 5 is the battened construction schematic diagram with edge chamfering of different numbers.
Fig. 6 is pump face diverse location combination schematic diagram.
Fig. 7 is various multi-form edge rounding pumping structure charts.
Fig. 8 is the pumping configuration figure of power expansion.
Embodiment
Further specify principle of the present invention, structure and embodiment below in conjunction with accompanying drawing.
Fig. 1 schematic diagram of the present invention, Optical Maser System is by strip type gain media 11, chamber mirror 16,17, pumping source 12,13,14,15 constitute, pump light is by pumping source 12,13,14,15 send, the pump face 18 that forms from the edge chamfering of strip type gain media 11 incides the inside of strip type gain media 11, because total reflection, most of pump light is limited in the inside of strip type gain media 11, repeatedly reflects in inside, absorbed by gain media 11, by repeatedly absorbing, improved the efficient of pumping, and obtained more uniform pump distribution.Laser vibrates between chamber mirror 16,17, is exaggerated by lath gain media 11, at last by 17 outputs of chamber mirror.
Laser is at chamber mirror 16, and vibration between gain media 11 and the chamber mirror 17 is exported by chamber mirror 17 at last, and chamber mirror 16 plates the film that is all-trans, to the optical maser wavelength total internal reflection, and chamber mirror 17 plating partial reflection films, the part that sees through is exactly the energy output of laser.
Laserresonator can adopt steady chamber and unsteady cavity structure according to actual needs respectively.
The strip type gain media 11 of edge chamfering also can contact with heat sink, by cooling system heat is distributed, and effectively the thermal control management makes higher power and the better beam quality of this laser output.
The cross section of strip type gain media of the present invention as shown in Figure 3, the edge chamfering of strip type gain media 30 forms pump face 31, the pump light 32 that laser diode sends just incides the inside of strip type gain media 30 by this pump face 31, in the repeatedly total reflection of the surface of gain media 30, thereby be limited in the inside of strip type gain media 30, absorbed for more than 30 time by the strip type gain media.
The pump face that edge chamfering forms has different shapes, and as shown in Figure 4, Fig. 4 (a) is the plane for the pump face that edge chamfering forms, and the inside of gain media 40 is incided on the plane 43 that the pump light 42 that laser diode 41 sends forms by edge chamfering.Fig. 4 (b) is a cylinder for the pump face 43 that edge chamfering forms.Fig. 4 (c) incides pumping plane 43 for pump light by coupled system 44.
The seamed edge of strip type gain media can carry out the chamfering of respective number as required, as shown in Figure 5, is the lath schematic diagram of the edge chamfering of several different numbers, and the number of edge chamfering is not limited to Fig. 5, can determine arbitrarily as required.
Different combinations can also be carried out in the pump face position that edge chamfering forms, and as shown in Figure 6, realizes corresponding pump distribution for several by different compound modes, and compound mode is not limited to Fig. 6, as required combination in any.
Edge rounding pumping can also adopt different version, and as shown in Figure 7, Fig. 7 (a) is a side edge rounding pumping structure, and the direction of pump face and vibration is parallel.Fig. 7 (b) is the end surface edge chamfering pumping configuration, and the direction of pump face and vibration is vertical.Fig. 7 (c) is side edge rounding pumping and end surface edge chamfering pumping structure combining.
Edge rounding pumping strip type structure can also be carried out power expansion, Fig. 8 is the pumping configuration figure of power expansion, by leaded light mirror 84,85, the array 83 that laser diode is formed, 86 pump lights that send incide strip type gain media 80 inside, and this just makes pump power expand greatly, and the edge rounding pumping strip type solid laser is developed towards the high power direction.
Claims (7)
1, the lath structure type solid-state laser of edge rounding pumping form, contain the strip type gain media, chamber mirror and pumping source, it is characterized in that, at least one edge chamfering of described lath structure type gain media forms pump face, makes pumping source incide repeatedly to reflect in inside behind the gain media inside and is absorbed.
2, the lath structure type solid-state laser of edge rounding pumping form as claimed in claim 1 is characterized in that, described pump face is plane or cylinder.
3, the lath structure type solid-state laser of edge rounding pumping form as claimed in claim 1 is characterized in that, the primary optical axis of described pumping source is vertical with described pump face.
4, the lath structure type solid-state laser of edge rounding pumping form as claimed in claim 1 is characterized in that, the pump face that described edge chamfering forms is parallel with orientation of oscillation or vertical.
5, the lath structure type solid-state laser of edge rounding pumping form as claimed in claim 1 is characterized in that, described pump face is coated with the anti-reflection film to the pumping wavelength high permeability.
6, the lath structure type solid-state laser of edge rounding pumping form as claimed in claim 1 is characterized in that, described gain media is laser crystal medium, laser glass medium or the Plastic Lasing Material of doped with rare-earth elements.
7, the lath structure type solid-state laser of edge rounding pumping form as claimed in claim 1, it is characterized in that, described pumping source is the laser diode of wall scroll, be directly coupled to gain media inside, or the array of multi-stripe laser diode composition, incide gain media inside by optical coupling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510011574 CN1671012A (en) | 2005-04-15 | 2005-04-15 | Lath structure type solid-state laser in edge rounding pumping form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510011574 CN1671012A (en) | 2005-04-15 | 2005-04-15 | Lath structure type solid-state laser in edge rounding pumping form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1671012A true CN1671012A (en) | 2005-09-21 |
Family
ID=35042121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510011574 Pending CN1671012A (en) | 2005-04-15 | 2005-04-15 | Lath structure type solid-state laser in edge rounding pumping form |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1671012A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877454A (en) * | 2010-04-16 | 2010-11-03 | 北京工业大学 | Multi-pass laser amplification method and gain module thereof |
| CN102118004B (en) * | 2009-12-31 | 2012-12-26 | 清华大学 | Method for improving asymmetric output beams of wattle type solid laser |
| CN110249489A (en) * | 2017-01-19 | 2019-09-17 | 肖特股份有限公司 | Laser medium for solid state laser |
-
2005
- 2005-04-15 CN CN 200510011574 patent/CN1671012A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118004B (en) * | 2009-12-31 | 2012-12-26 | 清华大学 | Method for improving asymmetric output beams of wattle type solid laser |
| CN101877454A (en) * | 2010-04-16 | 2010-11-03 | 北京工业大学 | Multi-pass laser amplification method and gain module thereof |
| CN110249489A (en) * | 2017-01-19 | 2019-09-17 | 肖特股份有限公司 | Laser medium for solid state laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0422418A2 (en) | Integrating laser diode pumped laser apparatus | |
| CN102064469A (en) | Diode pumping slab fixed laser | |
| CN200947526Y (en) | Semiconductor end pumped micro laser | |
| CN100399651C (en) | Slab laser for realizing Z-shaped light path by reflecting glass | |
| CN1671016A (en) | Side surface pumped thin disk laser and method for making same | |
| CN101039012A (en) | Thulium and holmium double-doped lutetium lithium fluoride crystal laser for laser diode side pumping | |
| CN101282021A (en) | Pumping method capable of improving efficiency and homogeneity as well as strip type solid laser | |
| CN1671012A (en) | Lath structure type solid-state laser in edge rounding pumping form | |
| CN1398028A (en) | Corner pumping method for plate strip and its solid laser gain module | |
| CN1254891C (en) | Dual wavelength combination pumping method for batten-shaped laser gain medium and its gain module | |
| CN101854021A (en) | Gain module for flash lamp pumped slab | |
| CN1822452A (en) | Solid slab laser using lens guide coupling | |
| CN1885643A (en) | Semiconductor laser pumping prism beam-expanded solid batten laser | |
| CN2598214Y (en) | Solid strip laser of laser diode inclination pumping | |
| WO2012088787A1 (en) | Green laser device | |
| CN2891410Y (en) | Solid slab laser using lens guide coupling | |
| CN100405675C (en) | Semiconductor single-side pumped solid slab laser | |
| CN1309125C (en) | Semiconductor laser side-pumped solid slab laser | |
| CN1259758C (en) | Dual wavelength combination pumping method for disk type laser gain medium and its gain module | |
| CN2566506Y (en) | High effcient high power solid laser for laser diode end-pumping | |
| CN1787303A (en) | High power inner cavity frequency doubling laser | |
| US20040136431A1 (en) | DPSS laser | |
| CN101494355A (en) | Dual-cavity laser | |
| CN2762398Y (en) | Solid slab laser device of semiconductor laser side pumping | |
| CN218102023U (en) | Crystal fiber laser based on cascade pumping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |