CN201478676U - Side-pumped thin-disk laser structure - Google Patents
Side-pumped thin-disk laser structure Download PDFInfo
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- CN201478676U CN201478676U CN2009201941079U CN200920194107U CN201478676U CN 201478676 U CN201478676 U CN 201478676U CN 2009201941079 U CN2009201941079 U CN 2009201941079U CN 200920194107 U CN200920194107 U CN 200920194107U CN 201478676 U CN201478676 U CN 201478676U
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Abstract
The utility model relates to the field of a laser, in particular to a side-pumped thin-disk laser structure, which solves the problems of heat dissipation of a high-power laser. The laser structure is to pump the laser gain medium in a laser resonator cavity by a laser pumping source through an optical collimating system. The laser resonator cavity comprises a front cavity mirror, a rear cavity mirror, laser gain medium and other optical elements, wherein the laser gain medium is thin disk-shaped, a heat radiating component is glued on one face of the laser gain medium, and a trapezoidal optical crystal block which has the same substrate with the laser gain medium is glued on the other face; and the laser gain medium is side pumped by the laser pumping source. Through side pumping the laser gain medium, the oscillating light in the resonator cavity is totally and internally reflected and transmitted on the surface of the laser gain medium, the heat radiating problem of high-power pumped laser gain medium can be effectively solved, and the compact laser resonator cavity with high gain factor and high power output is formed.
Description
Technical field
The utility model relates to field of lasers, relates in particular to a kind of thin-sheet laser structure of profile pump, solves the heat dissipation problem of high power laser.
Background technology
High power solid state laser is one of main direction of laser technology development.In the high power solid state laser system, the thermal effect of medium is the primary key issue that solves.Because the thermal effect of medium not only can cause thermal lens, thermal stress, limit laser power further improves, and laser beam quality is descended, even can cause laser medium to damage.Adopt various laser cavity structures and pump mode to weaken its influence both at home and abroad, but all had various deficiencies.As the Chinese patent publication number is the technical scheme of CN 2896617 " a kind of high power semiconductor lasers ": comprise heat sink and the laser array bar, it is characterized in that: the described heat sink polyhedron that is is provided with the whole polyhedral passage of perforation along an one direction in described polyhedron; Described laser array bar is fixed on the face parallel with this direction, is fixed with conductive layer at least one face adjacent with this face; Conductive layer and laser array bar electrically connect.The high power semiconductor lasers of this patent is provided with the bigger passage of circulation area in cuboid heat sink, the passage that makes is not easy blocked, and can adopt soft water, and just water for industrial use comes cooling heat sink, has reduced the operating cost of laser.Though but this structure has solved the heat dissipation problem of high power laser, its structure relative complex, need heat sink and in a plurality of passages of establishing, fabrication and processing is difficult relatively.
The utility model content
At the problems referred to above, the utility model proposes the more technical scheme of advantages of simple of a kind of structure, realize a kind of high power output laser of tight structure.
The technical solution of the utility model is:
A kind of thin-sheet laser structure of profile pump, be laser pumping light source (103) by optical alignment system (104) to the gain medium pumping in the laserresonator, comprise front cavity mirror (105A), Effect of Back-Cavity Mirror (105B), gain medium (101A) and other optical elements (106,107) in the described laserresonator.Wherein, described gain medium (101A) is a sheet type, it simultaneously glues together a radiating component (102), one of its another side gummed and the trapezoidal optical crystal piece (101B) of gain medium with base material, the described gain medium of described laser pumping light source (103) profile pump (101A).
The thickness of described gain medium (101A) is tens microns and arrives the hundreds of micron that the gain medium that doping content can be higher is as the Nd:YVO of 3%-7%
4, Nd:GdVO
4In crystal, and profile is trapezoidal.Itself and optical crystal piece (101B) can be become one by high temperature bonding or in-depth optical cement mode.
Further, described laser pumping light source (103) passes through the described gain medium of optical crystal piece (101B) profile pump (101A) by optical alignment system (104).
Further, described gain medium (101A) is coated with the highly reflecting films layer with the cemented surface of radiating component (102), and the surface of described optical crystal piece (101B) is coated with antireflective coating.
Further, by the described gain medium of radiating component (102) profile pump (101A), described radiating component (102) is the radiating component of printing opacity to described laser pumping light source (103) by optical alignment system (104).
Further, described gain medium (101A) is coated with the highly reflecting films layer with the cemented surface of optical crystal piece (101B), and the surface of described radiating component (102) is coated with antireflective coating.Further, described optical element (106,107) can be electro-optical Q-switch, polarizer, frequency-doubling crystal, optical standard tool and prism element.
Described laser pumping light source (103) is a high power LD array, or high power wall scroll LD, or other lasing light emitters of optical fiber coupling output.
Described optical alignment system (104) is the fiber optic collimator rod, or cylindrical lens, or set of cylindrical lenses, or the combination of cylindrical lens and spherical lens group.
Described radiating component (102) is solid radiating component, liquid radiating component or the gas radiating component of high thermal conductivity coefficient or the heating agent of interior circulating liquid of tube-type solid radiating component or gas.
Further, described laserresonator can replace with passive Q-regulaitng laser, described passive Q-regulaitng laser comprises that semiconductor laser (201) enters the passive Q-adjusted micro-slice laser (203) of microplate through optical coupling system (202), the pulse light of its output reenters and injects described gain medium (101A), obtains amplifying signal light.
The utility model adopts the structure of technique scheme, by side mode pumping laser gain media, oscillation light is propagated in gain medium surface experiences total internal reflection in the resonant cavity, can effectively solve the heat dissipation problem of high power pump gain medium, formation has the compact laserresonator of high-gain coefficient, high power output simultaneously.
Description of drawings
Fig. 1 (a) is the structural representation of embodiment 1 of the present utility model;
Fig. 1 (b) is the structural representation of embodiment 2 of the present utility model;
Fig. 1 (c) is the structural representation of embodiment 3 of the present utility model;
Fig. 2 is an another kind of execution mode schematic diagram of the present utility model.
Embodiment
Now with embodiment the utility model is further specified in conjunction with the accompanying drawings.
The utility model adopts ultra-thin highly doped gain medium thin slice and the non-doping optical material in-depth of same matrix optical cement, and ultra-thin gain medium one side contacts with highly heat-conductive material.By side mode pumping laser gain media, oscillation light is propagated in gain medium surface experiences total internal reflection in the resonant cavity.
Embodiment 1:
Consult shown in Fig. 1 (a), the laser structure of present embodiment, be that array semi-conductor laser 103 collimates the interior gain medium pumping of 104 pairs of laserresonators of rod by the optical fiber cylinder, comprise front cavity mirror 105A, Effect of Back-Cavity Mirror 105B, gain medium 101A and other optical elements 106,107 in the described laserresonator.Described gain medium 101A is a sheet type; it simultaneously glues together a radiating component 102; its another side is by one of high temperature bonding or in-depth optical cement gummed and the trapezoidal optical crystal piece 101B of gain medium with base material; the lower surface S1 of gain medium 101A is coated with the optical film that maybe can protect lower surface S1 to pump light high-reflecting film layer; the upper surface S4 of trapezoidal optical crystal piece 101B is coated with the anti-reflection rete of pump light, and face S2, S3 are the optics trapezoidal faces of gain medium 101A, optical crystal piece 101B.Described array semi-conductor laser 103 passes through the described gain medium 101A of optical crystal piece 101B pumping from the side via optical fiber cylinder collimation rod 104.The heating agent of circulating liquid or gas in the solid radiating component that described radiating component 102 is high thermal conductivity coefficients, liquid radiating component or gas radiating component or the tube-type solid radiating component.Described optical element 106,107 can be electro-optical Q-switch, polarizer, frequency-doubling crystal, optical standard tool and prism element etc.
Array semi-conductor laser 103 output light are linear pump light by optical fiber cylinder collimation rod 104 collimations, the gain medium 101A that arrives thin slice by trapezoidal optical crystal piece 101B is absorbed, because gain medium 101A very thin thickness, its the heat that produces taken away by the radiating component 102 of highly heat-conductive material rapidly, thereby solved the heat problem that the high power pump gain media produces.Gain medium 101A lower surface plating pump light highly reflecting films absorb pump light with reinforcement.Gain medium 101A can adopt highly doped gain medium, as 3%-7%Nd:YVO
4, Nd:GdVO
4In crystal, this class gain medium thin slice has effective absorptive pumping luminous energy power.Gain medium 101A, optical crystal piece 101B are made as trapezoidal optical element, form grazing incidence with front cavity mirror 105A, Effect of Back-Cavity Mirror 105B, form the total internal reflection laserresonator at lower surface S1.
Because gain medium 101A can be designed to tens microns to the hundreds of micron thickness, adopts the grazing incidence form again, although linear pumping light path is very long, the laser oscillation light vertical cross-section is still very little, more easily obtains the TEooM output of high optical quality.
The present embodiment structure can effectively solve the heat dissipation problem of high power pump gain medium, and formation has the compact laserresonator of high-gain coefficient, high power output simultaneously.
Embodiment 2:
Consult shown in Fig. 1 (b), its similar is in the structure of the embodiment 1 shown in Fig. 1 (a).The radiating component 102 of its Heat Conduction Material is for to have than the high permeability material pump light, and pump light is through radiating component 102 direct gain medium 101A, and only plate the pump light anti-reflection film at the upper surface of radiating component 102 this moment.Gain medium 101A, optical crystal piece 101B are made as trapezoidal optical element, form grazing incidence with front cavity mirror 105A, Effect of Back-Cavity Mirror 105B, form the total internal reflection laserresonator at surperficial S1.Other structures are consistent with the structure of embodiment 1, repeat no more in this.
Embodiment 3:
Consult shown in Fig. 1 (c), its similar is in the structure of the embodiment 1 shown in Fig. 1 (a).Pumping source can adopt the array semi-conductor laser among the embodiment 1, also can be high-power wall scroll LD, or optical fiber exports other kind lasing light emitter, but all adopts cylindrical lens or set of cylindrical lenses or cylindrical lens and spherical lens combination that the pump light collimation is carried out pumping again for wire.In the present embodiment, optical fiber output light source 103B is wire pumping laser gain media 101A through set of cylindrical lenses 104A and 104B collimation, obtains high power laser light output.Other structures are consistent with the structure of embodiment 1, repeat no more in this.
Consult shown in Figure 2, can adopt Fig. 1 (a)-Fig. 1 (b) embodiment the profile pump structure constitute the passive Q-regulaitng laser amplifier.Wherein 201 is semiconductor laser, and 202 is optical coupling system, and 203 is passive Q-adjusted micro-slice laser, forms by in-depth optical cement mode as adopting Nd:YAG crystal, Cr:YAG crystal and ktp crystal thin slice.Enter into gain medium 101A from the pulse light of passive Q-adjusted micro-slice laser 203 outputs, gain medium 101A is under pump light source 103B effect simultaneously, particle is in excitation state, under the flashlight effect, produce strong stimulated radiation, and make it in the flashlight that is added to amplify, thereby obtain higher-wattage output.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; can make various variations to the utility model in the form and details, be protection range of the present utility model.
Claims (10)
1. the thin-sheet laser structure of a profile pump, be laser pumping light source (103) by optical alignment system (104) to the gain medium pumping in the laserresonator, comprise front cavity mirror (105A) in the described laserresonator, Effect of Back-Cavity Mirror (105B), gain medium (101A) and other optical elements (106,107), it is characterized in that: described gain medium (101A) is a sheet type, it simultaneously glues together a radiating component (102), one of its another side gummed and the trapezoidal optical crystal piece (101B) of gain medium with base material, the described gain medium of described laser pumping light source (103) profile pump (101A).
2. the thin-sheet laser structure of profile pump according to claim 1 is characterized in that: described laser pumping light source (103) by optical alignment system (104) by the described gain medium of optical crystal piece (101B) profile pump (101A).
3. the thin-sheet laser structure of profile pump according to claim 2, it is characterized in that: described gain medium (101A) is coated with the highly reflecting films layer with the cemented surface of radiating component (102), and the surface of described optical crystal piece (101B) is coated with antireflective coating.
4. the thin-sheet laser structure of profile pump according to claim 1, it is characterized in that: by the described gain medium of radiating component (102) profile pump (101A), described radiating component (102) is the radiating component of printing opacity to described laser pumping light source (103) by optical alignment system (104).
5. the thin-sheet laser structure of profile pump according to claim 4, it is characterized in that: described gain medium (101A) is coated with the highly reflecting films layer with the cemented surface of optical crystal piece (101B), and the surface of described radiating component (102) is coated with antireflective coating.
6. the thin-sheet laser structure of profile pump according to claim 1, it is characterized in that: described optical element (106,107) can be electro-optical Q-switch, polarizer, frequency-doubling crystal, optical standard tool and prism element.
7. according to the thin-sheet laser structure of claim 1 or 2 or 4 described profile pumps, it is characterized in that: described laser pumping light source (103) is a high power LD array, or high power wall scroll LD, or other lasing light emitters of optical fiber coupling output.
8. according to the thin-sheet laser structure of claim 1 or 2 or 4 described profile pumps, it is characterized in that: described optical alignment system (104) is the fiber optic collimator rod, or cylindrical lens, or set of cylindrical lenses, or the combination of cylindrical lens and spherical lens group.
9. according to the thin-sheet laser structure of claim 1 or 3 or 4 or 5 described profile pumps, it is characterized in that: described radiating component (102) is solid radiating component, liquid radiating component or the gas radiating component of high thermal conductivity coefficient or the heating agent of interior circulating liquid of tube-type solid radiating component or gas.
10. the thin-sheet laser structure of profile pump according to claim 1, it is characterized in that: described laserresonator can replace with passive Q-regulaitng laser, described passive Q-regulaitng laser comprises that semiconductor laser (201) enters the passive Q-adjusted micro-slice laser (203) of microplate through optical coupling system (202), the pulse light of its output reenters and injects described gain medium (101A), described pumping source (103B) is by optical coupling system (104A, 104B) and the described gain medium of optical crystal piece (101B) profile pump (101A), amplify the pulse light of input.
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| CN2009201941079U CN201478676U (en) | 2009-08-31 | 2009-08-31 | Side-pumped thin-disk laser structure |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013634A (en) * | 2010-11-22 | 2011-04-13 | 福州高意通讯有限公司 | High-power passive Q-switched laser |
| CN102162875A (en) * | 2011-05-24 | 2011-08-24 | 北京交通大学 | Optical fiber structure with anti-reflection layer |
| CN103746276A (en) * | 2013-12-19 | 2014-04-23 | 深圳市大族激光科技股份有限公司 | Laser device and gain medium component thereof |
| CN104136961A (en) * | 2012-03-27 | 2014-11-05 | 恩耐激光技术有限公司 | High power laser system |
| CN104682178A (en) * | 2013-12-02 | 2015-06-03 | 大族激光科技产业集团股份有限公司 | Laser gain medium and laser provided with such gain medium |
| CN104682173A (en) * | 2013-12-02 | 2015-06-03 | 大族激光科技产业集团股份有限公司 | Thin disk laser module and laser system |
| CN104682177A (en) * | 2013-12-02 | 2015-06-03 | 大族激光科技产业集团股份有限公司 | Laser gain medium and laser provided with such gain medium |
| CN105717661A (en) * | 2016-04-14 | 2016-06-29 | 维林光电(苏州)有限公司 | Speckle laser device based on low time coherence and low spatial coherence and preparation method thereof |
| CN107611756A (en) * | 2017-09-22 | 2018-01-19 | 西安工业大学 | The high-efficiency welding method of disc-type laser medium and heat sink pedestal |
| CN112152055A (en) * | 2020-10-21 | 2020-12-29 | 中国科学院长春光学精密机械与物理研究所 | Solid laser |
| CN112467508A (en) * | 2021-01-28 | 2021-03-09 | 四川光天下激光科技有限公司 | Narrow pulse width laser |
| CN113783087A (en) * | 2021-08-19 | 2021-12-10 | 洛阳顶扬光电技术有限公司 | Method for improving laser absorption efficiency, solid laser and laser illuminator |
| CN114122875A (en) * | 2021-11-25 | 2022-03-01 | 河北工业大学 | Space operation Brillouin laser based on waveguide-shaped gain medium |
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2009
- 2009-08-31 CN CN2009201941079U patent/CN201478676U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102013634B (en) * | 2010-11-22 | 2012-05-09 | 福州高意通讯有限公司 | High-power passive Q-switched laser |
| CN102013634A (en) * | 2010-11-22 | 2011-04-13 | 福州高意通讯有限公司 | High-power passive Q-switched laser |
| CN102162875A (en) * | 2011-05-24 | 2011-08-24 | 北京交通大学 | Optical fiber structure with anti-reflection layer |
| CN104136961A (en) * | 2012-03-27 | 2014-11-05 | 恩耐激光技术有限公司 | High power laser system |
| CN104682178B (en) * | 2013-12-02 | 2018-01-05 | 大族激光科技产业集团股份有限公司 | Laser gain medium and the laser with the gain media |
| CN104682173B (en) * | 2013-12-02 | 2018-02-02 | 大族激光科技产业集团股份有限公司 | A kind of thin-sheet laser module and Optical Maser System |
| CN104682173A (en) * | 2013-12-02 | 2015-06-03 | 大族激光科技产业集团股份有限公司 | Thin disk laser module and laser system |
| CN104682177A (en) * | 2013-12-02 | 2015-06-03 | 大族激光科技产业集团股份有限公司 | Laser gain medium and laser provided with such gain medium |
| CN104682177B (en) * | 2013-12-02 | 2018-03-02 | 大族激光科技产业集团股份有限公司 | Laser gain medium and the laser with the gain media |
| CN104682178A (en) * | 2013-12-02 | 2015-06-03 | 大族激光科技产业集团股份有限公司 | Laser gain medium and laser provided with such gain medium |
| CN103746276B (en) * | 2013-12-19 | 2016-08-17 | 大族激光科技产业集团股份有限公司 | Laser instrument and gain medium component thereof |
| CN103746276A (en) * | 2013-12-19 | 2014-04-23 | 深圳市大族激光科技股份有限公司 | Laser device and gain medium component thereof |
| CN105717661A (en) * | 2016-04-14 | 2016-06-29 | 维林光电(苏州)有限公司 | Speckle laser device based on low time coherence and low spatial coherence and preparation method thereof |
| CN105717661B (en) * | 2016-04-14 | 2018-06-26 | 维林光电(苏州)有限公司 | A kind of scattered spot laser being concerned with based on low time coherence and low spatial and preparation method thereof |
| CN107611756A (en) * | 2017-09-22 | 2018-01-19 | 西安工业大学 | The high-efficiency welding method of disc-type laser medium and heat sink pedestal |
| CN112152055A (en) * | 2020-10-21 | 2020-12-29 | 中国科学院长春光学精密机械与物理研究所 | Solid laser |
| CN112467508A (en) * | 2021-01-28 | 2021-03-09 | 四川光天下激光科技有限公司 | Narrow pulse width laser |
| CN112467508B (en) * | 2021-01-28 | 2021-06-08 | 四川光天下激光科技有限公司 | Narrow pulse width laser |
| CN113783087A (en) * | 2021-08-19 | 2021-12-10 | 洛阳顶扬光电技术有限公司 | Method for improving laser absorption efficiency, solid laser and laser illuminator |
| CN114122875A (en) * | 2021-11-25 | 2022-03-01 | 河北工业大学 | Space operation Brillouin laser based on waveguide-shaped gain medium |
| CN114122875B (en) * | 2021-11-25 | 2023-08-08 | 河北工业大学 | Space operation Brillouin laser based on waveguide-shaped gain medium |
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