CN101986480A - Composite self-Raman frequency-doubled yellow laser crystal module - Google Patents
Composite self-Raman frequency-doubled yellow laser crystal module Download PDFInfo
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- CN101986480A CN101986480A CN2009101122749A CN200910112274A CN101986480A CN 101986480 A CN101986480 A CN 101986480A CN 2009101122749 A CN2009101122749 A CN 2009101122749A CN 200910112274 A CN200910112274 A CN 200910112274A CN 101986480 A CN101986480 A CN 101986480A
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Abstract
The invention relates to a composite self-Raman frequency-doubled yellow laser crystal module. The module comprises self-Raman laser crystals, wherein nonlinear optical crystals which are cut at a special matching angle are adhered into a whole by an optical adhesive; and optical thin films coated on the front end face and the rear end face of the crystals together form an optical resonant cavity. The yellow laser module has the characteristics of simple design, compact structure, convenience of batch production and low cost; and in use, the laser module does not need to be adjusted, and yellow light can be directly emitted under pumping irradiation of a semiconductor laser which passes through a shaping and coupling system. The yellow laser module can be used in a laser device which outputs low and medium power, so that laser can be conveniently and rapidly output, and the module is suitable for sodium beacon light sources of the field of military affairs and meteorological field and the field of laser cosmetology and can be widely applied to the fields such as spectroscopy, laser radar, information storage and the like.
Description
Technical field
The present invention relates to a kind of solid laser module, belong to the application of crystalline material, can be applied to the LD end pumping and produce gold-tinted laser at photoelectric field.
Background technology
Gold-tinted laser can be treated hemangioma cutis, nevus flammeus, telangiectasis etc. in the laser medical beauty treatment field, can be used as sodium beacon light source at military, meteorological field, in addition, also be widely used in fields such as spectroscopy, information stores, laser radars.The Solid State Laser technology that produces gold-tinted at present mainly contains three kinds of methods: the one, and the infrared laser that frequency multiplication neodymium-doped laser crystal produces obtains gold-tinted (LD-pumpedNd:YAG/LBO 556nm yellow laser, Optics ﹠amp; Laser Technology, 38,569-572 (2006)); The 2nd, the dual-wavelength laser of the neodymium-doped laser crystal is produced 1 micron and 1.3 micron wavebands and obtain gold-tinted (with frequency all-solid-state yellow laser, Acta Physica Sinica, 58,970-974 (2009)) frequently in high power quasi c. w. the chamber in; The 3rd, the raman laser of frequency multiplication neodymium-doped laser crystal obtains gold-tinted (Diode-side-pumped intracavity frequency-doubled Nd:YAG/BaWO4 Raman lasergenerating average output power of 3.14 W at 590nm, Optics Letter.32,2951-2953 (2007)).But based on the method for the gold-tinted of preceding two kinds of acquisitions, owing to limited by the transition cross section of corresponding base frequency laser, delivery efficiency is generally lower; The third method is the effective means that obtains the gold-tinted laser of higher-wattage owing to utilize the lasing Raman frequency shift laser of the transition frequency multiplication acquisition again of neodymium-doped laser crystal transition cross section maximum.The gold-tinted report of producing about above method all is to adopt discrete optical module, and whole system is comparatively complicated, and is subjected to the influence of environment bigger.At the frequency multiplication green (light) laser, develop the composite module of compact conformation at present, can under semiconductor pumped irradiation, directly go out green glow, opened up vast market.The present invention has provided the another kind of composite module that can directly go out gold-tinted under semiconductor pumped irradiation.
Summary of the invention
The purpose of patent of the present invention provides a kind of low cost, and the composite module of compact conformation without any need for adjustment, can directly go out gold-tinted under semiconductor pumped.
Technical solution of the present invention is described below in conjunction with the accompanying drawings:
The gold-tinted laser crystal module of compound self-Raman multiple frequency is by from raman laser crystal 1, the nonlinear optical crystal 2 of specific coupling angle cutting and be coated on the optical thin film A on this surface, crystal module front and back end respectively, B forms, from raman laser crystal 1, nonlinear optical crystal 2 is fixed together by optical cement.Its modular structure is: optical thin film A/ is from raman laser crystal 1/ nonlinear optical crystal 2/ optical thin film B.Wherein optical thin film A and optical thin film B constitute laserresonator.
Described from raman laser crystal 1 can for monolithic have the laser crystal 11 (as shown in Figure 2) of Raman effect or have that the laser crystal 11 front end bonding host crystals 10 of Raman effect form from raman laser crystal (as shown in Figure 3) or have that the laser crystal 11 rear end bonding host crystals 10 of Raman effect form from raman laser crystal (as shown in Figure 4) or have that the laser crystal 11 both-end bonding host crystals 10 of Raman effect form from raman laser crystal (as shown in Figure 5).Described laser crystal 11 with Raman effect is Nd:YVO
4Or Nd:GdVO
4Or Nd:KGW,, the host crystal of their correspondences is respectively YVO
4Or GdVO
4Or KGW.
Described nonlinear optical crystal 2 can be KTP or KTA, and their phase matched angle is pressed the coupling angle cutting of Raman light frequency multiplication, and length can be cut according to crystal deviation angle and actual the requirement.
In the described optical thin film, be coated on from the optical thin film A on the raman laser crystal front end face be to 808nm near near wavelength anti-reflection (for module) wavelength (for module) or the 880nm as near the wavelength LD pumping 880nm as near the wavelength LD pumping 808nm, high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on the nonlinear optical crystal rear end face is anti-anti-reflection to gold-tinted 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m waveband height.
Patent using method of the present invention: the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side.For optical thin film A is that the anti-reflection module of wavelength can adopt the LD pumping irradiation by near the wavelength 808nm after the shaping focusing system directly to go out gold-tinted down near the 808nm; For optical thin film A is that the anti-reflection module of wavelength can adopt by near the wavelength LD pumping irradiation 880nm after the shaping focusing system and directly goes out gold-tinted down near the 880nm.
The superiority of patent of the present invention: in the such scheme, be near the LD pumping that the anti-reflection module of wavelength can adopt near the wavelength at present the most frequently used 808nm 808nm for optical thin film A, it is big to have an absorption coefficient, the advantage that absorption band is wide; For optical thin film A is near the LD pumping that the anti-reflection module of wavelength can adopt near the wavelength 880nm 880nm, and it is little to have a quantum loss, and the thermal effect influence is little, the advantage that efficient is high.Patent of the present invention has simplicity of design, compact conformation, and it is very low to be convenient to production in enormous quantities and cost; Laser crystal, nonlinear optical crystal resonant cavity are without any need for adjustment during use.
Description of drawings
Fig. 1, the structure chart of the gold-tinted laser crystal module of compound self-Raman multiple frequency; Fig. 2, monolithic have the structure chart of the laser crystal of Raman effect; Fig. 3, have that the laser crystal front end bonding host crystal of Raman effect forms from raman laser crystal structure figure; Fig. 4, have that the laser crystal rear end bonding host crystal of Raman effect forms from raman laser crystal structure figure; Fig. 5, have that the laser crystal both-end bonding host crystal of Raman effect forms from raman laser crystal structure figure
The drawing explanation:
1, from the raman laser crystal; 2, nonlinear optical crystal; A, optical thin film A; B, optical thin film B; 11, the laser crystal with Raman effect; 10, host crystal.
Embodiment
Embodiment 1:
According to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.Selecting for use structure shown in Figure 2 to be of a size of 3 * 3 * 15mm, neodymium-doped concentration is 0.3% Nd:YVO
4The laser crystal 11 that monolithic has Raman effect is from raman laser crystal 1.Selecting matching angle for use is θ=69 °, and the φ=0 ° KTP that cuts is as nonlinear optical crystal 2.Be fixed together by optical cement from raman laser crystal 1 and nonlinear optical crystal 2.The optical thin film A that should be coated with from raman laser crystal 1 front end face is anti-reflection to the 808nm pumping wavelength simultaneously, and is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on nonlinear optical crystal 2 rear end faces is high anti-anti-reflection to the gold-tinted of 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m wavebands.Form laserresonator by optical thin film A and optical thin film B.
During use, the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side, directly goes out the gold-tinted of 0.58 mum wavelength down by the LD pumping irradiation of the 808nm wavelength after the shaping focusing system.
Embodiment 2:
According to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.Selecting for use structure shown in Figure 3 to be of a size of 3 * 3 * 13mm, neodymium-doped concentration is 0.3% Nd:YVO
4Crystal 11 front end bondings are of a size of the pure YVO of 3 * 3 * 2mm
4Crystal 10 form from raman laser crystal 1.Selecting matching angle for use is θ=69 °, and the φ=0 ° KTP that cuts is as nonlinear optical crystal 2.Be fixed together by optical cement from raman laser crystal 1 and nonlinear optical crystal 2.The optical thin film A that should be coated with from raman laser crystal 1 front end face is anti-reflection to the 808nm pumping wavelength simultaneously, and is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on nonlinear optical crystal 2 rear end faces is high anti-anti-reflection to the gold-tinted of 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m wavebands.Form laserresonator by optical thin film A and optical thin film B.
During use, the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side, directly goes out the gold-tinted of 0.58 mum wavelength down by the LD pumping irradiation of the 808nm wavelength after the shaping focusing system.
Embodiment 3:
According to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.Selecting for use structure shown in Figure 4 to be of a size of 3 * 3 * 8mm, neodymium-doped concentration is 0.3% Nd:YVO
4Crystal 11 rear end bondings are of a size of the pure YVO of 3 * 3 * 12mm
4 Crystal 10 form from raman laser crystal 1.Selecting matching angle for use is θ=69 °, and the φ=0 ° KTP that cuts is as nonlinear optical crystal 2.Be fixed together by optical cement from raman laser crystal 1 and nonlinear optical crystal 2.The optical thin film A that should be coated with from raman laser crystal 1 front end face is anti-reflection to the 808nm pumping wavelength simultaneously, and is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on nonlinear optical crystal 2 rear end faces is high anti-anti-reflection to the gold-tinted of 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m wavebands.Form laserresonator by optical thin film A and optical thin film B.
During use, the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side, directly goes out the gold-tinted of 0.58 mum wavelength down by the LD pumping irradiation of the 808nm wavelength after the shaping focusing system.
Embodiment 4:
According to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.Selecting for use structure shown in Figure 5 to be of a size of 3 * 3 * 8mm, neodymium-doped concentration is 0.3% Nd:YVO
4Crystal 11 front end bondings are of a size of the pure YVO of 3 * 3 * 2mm
4Crystal 10, rear end bonding be of a size of that the pure YVO4 crystal 10 of 3 * 3 * 10mm forms from raman laser crystal 1.Selecting matching angle for use is θ=69 °, and the φ=0 ° KTP that cuts is as nonlinear optical crystal 2.Be fixed together by optical cement from raman laser crystal 1 and nonlinear optical crystal 2.The optical thin film A that should be coated with from raman laser crystal 1 front end face is anti-reflection to the 808nm pumping wavelength simultaneously, and is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on nonlinear optical crystal 2 rear end faces is high anti-anti-reflection to the gold-tinted of 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m wavebands.Form laserresonator by optical thin film A and optical thin film B.
During use, the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side, directly goes out the gold-tinted of 0.58 mum wavelength down by the LD pumping irradiation of the 808nm wavelength after the shaping focusing system.
Embodiment 5:
According to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.Selecting for use structure shown in Figure 2 to be of a size of 3 * 3 * 15mm, neodymium-doped concentration is 0.3% Nd:YVO
4The laser crystal 11 that monolithic has Raman effect is from raman laser crystal 1.Selecting matching angle for use is θ=69 °, and the φ=0 ° KTP that cuts is as nonlinear optical crystal 2.Be fixed together by optical cement from raman laser crystal 1 and nonlinear optical crystal 2.The optical thin film A that should be coated with from raman laser crystal 1 front end face is anti-reflection to the 880nm pumping wavelength simultaneously, and is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on nonlinear optical crystal 2 rear end faces is high anti-anti-reflection to the gold-tinted of 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m wavebands.Form laserresonator by optical thin film A and optical thin film B.
During use, the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side, directly goes out the gold-tinted of 0.58 mum wavelength down by the LD pumping irradiation of the 880nm wavelength after the shaping focusing system.
Embodiment 6:
According to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.Selecting for use structure shown in Figure 3 to be of a size of 3 * 3 * 13mm, neodymium-doped concentration is 0.3% Nd:YVO
4Crystal 11 front end bondings are of a size of the pure YVO of 3 * 3 * 2mm
4Crystal 10 form from raman laser crystal 1.Selecting matching angle for use is θ=69 °, and the φ=0 ° KTP that cuts is as nonlinear optical crystal 2.Be fixed together by optical cement from raman laser crystal 1 and nonlinear optical crystal 2.The optical thin film A that should be coated with from raman laser crystal 1 front end face is anti-reflection to the 880nm pumping wavelength simultaneously, and is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on nonlinear optical crystal 2 rear end faces is high anti-anti-reflection to the gold-tinted of 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m wavebands.Form laserresonator by optical thin film A and optical thin film B.
During use, the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side, directly goes out the gold-tinted of 0.58 mum wavelength down by the LD pumping irradiation of the 880nm wavelength after the shaping focusing system.
Embodiment 7:
According to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.Selecting for use structure shown in Figure 4 to be of a size of 3 * 3 * 6mm, neodymium-doped concentration is 0.3% Nd:YVO
4Crystal 11 rear end bondings are of a size of the pure YVO of 3 * 3 * 10mm
4 Crystal 10 form from raman laser crystal 1.Selecting matching angle for use is θ=69 °, and the φ=0 ° KTP that cuts is as nonlinear optical crystal 2.Be fixed together by optical cement from raman laser crystal 1 and nonlinear optical crystal 2.The optical thin film A that should be coated with from raman laser crystal 1 front end face is anti-reflection to the 880nm pumping wavelength simultaneously, and is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on nonlinear optical crystal 2 rear end faces is high anti-anti-reflection to the gold-tinted of 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m wavebands.Form laserresonator by optical thin film A and optical thin film B.
During use, the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side, directly goes out the gold-tinted of 0.58 mum wavelength down by the LD pumping irradiation of the 880nm wavelength after the shaping focusing system.
Embodiment 8:
According to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.Selecting for use structure shown in Figure 5 to be of a size of 3 * 3 * 6mm, neodymium-doped concentration is 0.3% Nd:YVO
4Crystal 11 front end bondings are of a size of the pure YVO of 3 * 3 * 2mm
4Crystal 10, rear end bonding be of a size of that the pure YVO4 crystal 10 of 3 * 3 * 10mm forms from raman laser crystal 1.Selecting matching angle for use is θ=69 °, and the φ=0 ° KTP that cuts is as nonlinear optical crystal 2.Be fixed together by optical cement from raman laser crystal 1 and nonlinear optical crystal 2.The optical thin film A that should be coated with from raman laser crystal 1 front end face is anti-reflection to the 880nm pumping wavelength simultaneously, and is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously; The optical thin film B that is coated on nonlinear optical crystal 2 rear end faces is high anti-anti-reflection to the gold-tinted of 0.58 mu m waveband simultaneously to 1.06 mu m wavebands and 1.17 mu m wavebands.Form laserresonator by optical thin film A and optical thin film B.
During use, the gold-tinted laser crystal module of compound self-Raman multiple frequency is fixed in the metal heat sink, makes it and well contacts heat radiation on every side, directly goes out the gold-tinted of 0.58 mum wavelength down by the LD pumping irradiation of the 880nm wavelength after the shaping focusing system.
Embodiment 9: according to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.With embodiment 1,2,3,4,5,6,7,8 different be that laser crystal 11 is Nd:GdVO
4Or Nd:KGW.
Embodiment 10: according to Fig. 1, make the gold-tinted laser crystal module of a compound self-Raman multiple frequency.With embodiment 1,2,3,4,5,6,7,8,9 different be nonlinear optical crystal 2 for matching angle is θ=76.4 °, the φ=0 ° KTA that cuts.
Claims (5)
1. the gold-tinted laser crystal module of a compound self-Raman multiple frequency comprises: from the raman laser crystal, the nonlinear optical crystal of the coupling angle of Raman light frequency multiplication cutting is coated on the particular optical film of whole gold-tinted laser crystal module front/rear end; It is characterized in that being fixed together by optical cement, and form optical resonator jointly with the optical thin film that front/rear end is coated with from raman laser crystal and nonlinear optical crystal.
2. by the gold-tinted laser crystal module of the described compound self-Raman multiple frequency of claim 1, it is characterized in that: described from the raman laser crystal be monolithic have the laser crystal of Raman effect or have that the laser crystal front end bonding host crystal of Raman effect forms from the raman laser crystal or have that the laser crystal rear end bonding host crystal of Raman effect forms from the raman laser crystal or have that the laser crystal both-end bonding host crystal of Raman effect forms from the raman laser crystal.
3. by the gold-tinted laser crystal module of the described compound self-Raman multiple frequency of claim 2, it is characterized in that: described laser crystal with Raman effect is Nd:YVO
4Or Nd:GdVO
4Or Nd:KGW.
4. by the gold-tinted laser crystal module of the described compound self-Raman multiple frequency of claim 1, it is characterized in that: described nonlinear optical crystal is KTP or KTA.
5. by the gold-tinted laser crystal module of the described compound self-Raman multiple frequency of claim 1, it is characterized in that: described this crystal module optical thin film that front end face is coated with is anti-reflection high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously to pump light 808nm or 880nm; Crystal module optical thin film that rear end face is coated with is high anti-to 1.06 mu m wavebands and 1.17 mu m wavebands simultaneously, but high saturating to the gold-tinted of 0.58 mu m waveband.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044839A (en) * | 2010-11-18 | 2011-05-04 | 苏州生物医学工程技术研究所 | Bi-wavelength transition stimulated Raman sum frequency laser wavelength conversion equipment |
| CN102055129A (en) * | 2010-11-18 | 2011-05-11 | 苏州生物医学工程技术研究所 | Self-stimulated Raman sum frequency laser wavelength conversion device with compact structure |
| CN103199430A (en) * | 2013-03-20 | 2013-07-10 | 厦门大学 | Frequency doubling self-regulating Q green laser inside double-doped chrome yttrium aluminum garnet composite photassium titanyl phosphate cavity |
| CN104568897A (en) * | 2013-10-29 | 2015-04-29 | 苏州拉曼检测技术有限公司 | Raman spectrum enhancement device, raman spectrum enhancement system and raman spectrum enhancement method based on external resonant cavity technology |
| CN108418090A (en) * | 2018-04-20 | 2018-08-17 | 泉州师范学院 | A kind of mid-infrared laser device |
| CN109921272A (en) * | 2019-03-20 | 2019-06-21 | 中国科学院半导体研究所 | Totally-enclosed crystal bonding laser resonator without the air gap |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201149952Y (en) * | 2007-11-06 | 2008-11-12 | 山东大学 | Self Raman multiple frequency solid yellow light laser |
| CN201167207Y (en) * | 2008-02-28 | 2008-12-17 | 山东大学 | Arsenic acid titanium oxygen potassium crystal full-solid Raman laser |
| CN101471528A (en) * | 2007-12-28 | 2009-07-01 | 福建福晶科技股份有限公司 | Compact green light crystal component |
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2009
- 2009-07-29 CN CN2009101122749A patent/CN101986480A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201149952Y (en) * | 2007-11-06 | 2008-11-12 | 山东大学 | Self Raman multiple frequency solid yellow light laser |
| CN101471528A (en) * | 2007-12-28 | 2009-07-01 | 福建福晶科技股份有限公司 | Compact green light crystal component |
| CN201167207Y (en) * | 2008-02-28 | 2008-12-17 | 山东大学 | Arsenic acid titanium oxygen potassium crystal full-solid Raman laser |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044839A (en) * | 2010-11-18 | 2011-05-04 | 苏州生物医学工程技术研究所 | Bi-wavelength transition stimulated Raman sum frequency laser wavelength conversion equipment |
| CN102055129A (en) * | 2010-11-18 | 2011-05-11 | 苏州生物医学工程技术研究所 | Self-stimulated Raman sum frequency laser wavelength conversion device with compact structure |
| CN103199430A (en) * | 2013-03-20 | 2013-07-10 | 厦门大学 | Frequency doubling self-regulating Q green laser inside double-doped chrome yttrium aluminum garnet composite photassium titanyl phosphate cavity |
| CN104568897A (en) * | 2013-10-29 | 2015-04-29 | 苏州拉曼检测技术有限公司 | Raman spectrum enhancement device, raman spectrum enhancement system and raman spectrum enhancement method based on external resonant cavity technology |
| CN104568897B (en) * | 2013-10-29 | 2017-12-12 | 中国计量大学 | Raman spectrum intensifier, system and method based on chamber exterior resonant cavity technology |
| CN108418090A (en) * | 2018-04-20 | 2018-08-17 | 泉州师范学院 | A kind of mid-infrared laser device |
| CN108418090B (en) * | 2018-04-20 | 2020-09-04 | 泉州师范学院 | Intermediate infrared laser |
| CN109921272A (en) * | 2019-03-20 | 2019-06-21 | 中国科学院半导体研究所 | Totally-enclosed crystal bonding laser resonator without the air gap |
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Application publication date: 20110316 |