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CN106229806B - Raman Yellow Pumped Tunable Chrysoberyl Laser - Google Patents

Raman Yellow Pumped Tunable Chrysoberyl Laser Download PDF

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Publication number
CN106229806B
CN106229806B CN201610857560.8A CN201610857560A CN106229806B CN 106229806 B CN106229806 B CN 106229806B CN 201610857560 A CN201610857560 A CN 201610857560A CN 106229806 B CN106229806 B CN 106229806B
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laser
light
raman
chrysoberyl
crystal
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CN106229806A (en
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丁欣
刘简
盛泉
李斌
孙冰
姜鹏波
赵岑
姚建铨
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Tianjin University
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Tianjin University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Lasers (AREA)

Abstract

The present invention relates to all-solid state laser technical fields, to provide tunable alaxadrite laser, and it is low in cost, higher smooth light efficiency may be implemented.The technical solution adopted by the present invention is that, the tunable alaxadrite laser of Raman yellow light pumping, it include: laser diode, energy-transmission optic fibre, coupled lens group, cavity mirror, laser gain medium, Raman crystal, harmonic wave piece, frequency-doubling crystal, yellow light outgoing mirror, condenser lens, Chrysoberyl crystal, chrysoberyl laser total reflective mirror, tuned cell and chrysoberyl laser output mirror, laser diode issues the pump light in laser gain medium absorption band as pumping source, laser gain medium is pumped after energy-transmission optic fibre transmission and coupled lens group focus；Population inversion is formed in laser gain medium, as pump power increases, generates fundamental frequency light under the feedback effect for the resonant cavity that cavity mirror and yellow light outgoing mirror are constituted.Present invention is mainly applied to laser design and manufacture.

Description

The tunable alaxadrite laser of Raman yellow light pumping
Technical field
The present invention relates to the tunable chrysoberyl that all-solid state laser technical field more particularly to a kind of Raman yellow light pump Laser.
Background technique
Chrysoberyl (Cr3+:BeAl2O4) it is a kind of laser material for being provided simultaneously with high power, broad tuning excellent properties, by In its tunability, high-gain and superior temperature characterisitic, alaxadrite laser are widely paid attention to once occurring.Its base This output spectrum range is in visible light near infrared band 700-850nm, can be widely used in space remote sensing, medical treatment, light Storage, spectroscopy and the numerous research frontiers of nonlinear optics.
There are many method for pumping Chrysoberyl crystal, this is because chrysoberyl has very wide absorption band, in 400- The absorbable pump light of 700nm.Currently used pump mode mainly has: 1, flash lamp pumping.Industrial processes and commercialization Medical alaxadrite laser mostly uses flash lamp pumping mode, and the Technical comparing is mature, but undesirable causes to swash because it is absorbed The transfer efficiency of light device entirety is lower, while the heat production of laser is also more serious.2,635/680nm feux rouges LD is pumped.Using LD pumping Chrysoberyl crystal can greatly improve the whole efficiency of laser, and realize the miniaturization of laser, but at present Powerful 635 and 680nmLD is not much and sees, greatly limits the output power of alaxadrite laser, and wave band LD Price also costly.3, blue-green Laser pumps.Since the absorption band of chrysoberyl covers entire visible light wave range, Therefore the crystal available now common 488nm argon ion laser, copper-vapor laser and 532nm green (light) laser etc. is visible Light laser as pumping source, but the pump light under this pump mode and between output light there are larger quantum loss, make The heat load for obtaining laser is more serious, to influence the output characteristics such as beam quality.
Summary of the invention
In order to overcome the deficiencies of the prior art, it is contemplated that chrysoberyl is presented centered on 590nm on the direction of E//b axis Very strong width absorption peak, the present invention provides a kind of tunable chrysoberyl laser by the yellow light pumping near 590nm wavelength Device.The present invention use the yellow light that is generated based on stimulated Raman scattering as tunable alaxadrite laser pumping source not only at This is cheap, and due to the absorption peak that it can be directed at Chrysoberyl crystal, higher smooth light efficiency may be implemented.The present invention adopts Technical solution is the tunable alaxadrite laser of Raman yellow light pumping, comprising: laser diode, energy-transmission optic fibre, coupling It closes lens group, cavity mirror, laser gain medium, Raman crystal, harmonic wave piece, frequency-doubling crystal, yellow light outgoing mirror, focus thoroughly Mirror, Chrysoberyl crystal, chrysoberyl laser total reflective mirror, tuned cell and chrysoberyl laser output mirror, laser diode are made The pump light in laser gain medium absorption band is issued for pumping source, to sharp after energy-transmission optic fibre transmission and coupled lens group focus Optical gain medium is pumped；Population inversion is formed in laser gain medium, as pump power increases, in resonance cavity reflection Fundamental frequency light is generated under the feedback effect for the resonant cavity that mirror and yellow light outgoing mirror are constituted；The fundamental frequency light pass through Raman crystal when occur by Swash Raman scattering effect, single order Stokes Raman light is generated after the intensity of fundamental frequency light is more than Raman threshold and in resonant cavity Oscillation；Raman light generates yellow light under the action of frequency-doubling crystal, is exported by the reflection of harmonic wave piece via yellow light outgoing mirror；Yellow light It is focused in Chrysoberyl crystal under the action of condenser lens, makes Chrysoberyl crystal that population inversion occur, in Jin Lvbao Laser generation is formed in the resonant cavity that stone laser total reflective mirror and chrysoberyl laser output mirror are constituted, and in the effect of tuned cell The lower tunable output for realizing optical maser wavelength.
The laser gain medium and the polishing of Raman crystal equal both ends, be coated with pump light that the laser diode issues and The single order Stokes Raman light anti-reflection film that the fundamental frequency light and the Raman crystal that the gain media generates generate；If wherein swashing Optical gain medium is from raman laser crystal, i.e., it is provided simultaneously with the attribute for generating fundamental frequency light and being carried out Raman frequency shift, then Raman crystal is no longer set in the tunable alaxadrite laser of the Raman yellow light pumping.
The cavity mirror is concave mirror or flat mirror, and the pump light high transmittance film is plated on two sides, close to laser gain medium One side plate the fundamental frequency light and the Raman light high-reflecting film；Fundamental frequency light and Raman light high transmittance film are plated in harmonic wave piece two sides, lean on The one side of the nearly frequency-doubling crystal plates the yellow light high-reflecting film；Yellow light outgoing mirror is concave mirror or flat mirror, plates fundamental frequency light and Raman light High-reflecting film plates yellow light high transmittance film.
The Chrysoberyl crystal both ends polishing, is coated with yellow light and 700-800nm high transmittance film, if the Chrysoberyl crystal It is cut at Brewster angle, then is not necessarily to plated film.
The chrysoberyl laser total reflective mirror plates 700-800nm high-reflecting film；The chrysoberyl laser output mirror plates 700- The part 800nm penetrates film.
In the alaxadrite laser further include: the fundamental frequency is plated on acousto-optic Q modulation crystal, acousto-optic Q modulation crystal two sides Light and the Raman spectra permeable membrane operate for realizing the pulse of the fundamental frequency light, improve peak power to improve Raman Process With the nonlinear conversion efficiency of frequency multiplication process.
The features of the present invention and beneficial effect are:
The present invention is not only low in cost as the pumping source of tunable alaxadrite laser using Raman yellow light, Er Qieyou In the absorption peak that it can be directed at Chrysoberyl crystal, higher smooth light efficiency may be implemented, while pump light and output light Excited state is also smaller, can be improved the output performance of alaxadrite laser, meets a variety of needs in practical application.
Detailed description of the invention:
Fig. 1 is a kind of structure of the tunable alaxadrite laser for Raman yellow light pumping that the embodiment of the present invention 1 provides Schematic diagram.
In attached drawing, parts list represented by the reference numerals are as follows:
1: laser diode；2: energy-transmission optic fibre；
3: coupled lens group；4: cavity mirror；
5: laser gain medium；6: Raman crystal；
7: acousto-optic Q modulation crystal；8: harmonic wave piece；
9: frequency-doubling crystal；10: yellow light outgoing mirror；
11: condenser lens；12: the first chrysoberyl laser total reflective mirrors；
13: Chrysoberyl crystal；14: the second chrysoberyl laser total reflective mirrors；
15: third chrysoberyl laser total reflective mirror；16: chrysoberyl laser output mirror
17: tuned cell.
Fig. 2 is a kind of structure of the tunable alaxadrite laser for Raman yellow light pumping that the embodiment of the present invention 2 provides Schematic diagram.
In attached drawing, 18: yellow light feedback mirrors.
Specific embodiment
In view of chrysoberyl is on the direction of E//b axis, very strong wide absorption peak, the present invention are presented centered on 590nm Provide a kind of tunable alaxadrite laser by the yellow light pumping near 590nm wavelength.The present invention, which uses, to be based on being excited The yellow light that Raman scattering generates is not only low in cost as the pumping source of tunable alaxadrite laser, but also since it can It is directed at the absorption peak of Chrysoberyl crystal, higher smooth light efficiency may be implemented.It is described below:
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention is made below further Ground detailed description.
Embodiment 1
Chrysoberyl (Cr3+:BeAl2O4) crystal be a kind of function admirable laser material, ground to its absorption spectrum Study carefully middle discovery, biggish absorption cross-section is all had in yellow band on three major axes orientations of the crystal, especially in E//b axis Direction on, very strong wide absorption peak is presented centered on 590nm.Therefore, optical pumping or unpolarized optical pumping are either polarized Pu can realize fully absorbing for pump light using yellow light pumping Chrysoberyl crystal.Alaxadrite laser as compared with the past Pump mode, propose use pumping source of the Raman yellow light as tunable alaxadrite laser, it is not only low in cost, but also Since it can be directed at the absorption peak of Chrysoberyl crystal, higher smooth light efficiency, while pump light and output light may be implemented Excited state it is also smaller, can be improved the output performance of alaxadrite laser, meet a variety of needs in practical application.
The embodiment of the present invention 1 provides a kind of tunable alaxadrite laser structure of Raman yellow light pumping, such as Fig. 1 institute Show.
808nm or 880nm laser diode pumping source 1 issues pump light, through the transmission of energy-transmission optic fibre 2 and coupled lens group 3 Laser gain medium 5 is pumped after focusing；Laser gain medium 5 use Nd:YAG crystal, crystalline size be 3 × 3 × 10mm3, doping concentration selection 0.5at.%；Raman crystal 6 selects the GdVO of a cutting4Crystal, crystalline size be 3 × 3 × 10mm3；Laser gain medium 5 and the polishing of the equal both ends of Raman crystal 6, plate 1064nm fundamental frequency light and 1174nm single order Stokes is drawn Graceful smooth anti-reflection film, is placed in heat sink with indium sheet package respectively, controls operating temperature using cooling circulating water system.Resonance cavity reflection Mirror 4 is flat mirror, two-sided plating 808nm or 880nm high transmittance film, and the one side close to laser gain medium 5 plates 1064nm and 1174nm high Anti- film；Harmonic wave piece 8 is flat mirror, two-sided plating 1064nm and 1174nm anti-reflection film, and the one side plating 587nm high close to frequency-doubling crystal 9 is anti- Film；For frequency-doubling crystal 9 using the ktp crystal of II type-Ⅱphase matching, crystalline size is 3 × 3 × 15mm3, heat is placed in indium sheet package In heavy, operating temperature is controlled using cooling circulating water system；It is the concave mirror of 100mm, plating that yellow light outgoing mirror 10, which selects radius of curvature, 1064nm and 1174nm high-reflecting film, 587nm high transmittance film；
Laser gain medium 5 absorbs 808nm or 880nm pump light and forms population inversion, in cavity mirror 4 and Huang 1064nm fundamental frequency light is generated under the feedback effect for the resonant cavity that light output mirror 10 is constituted；1064nm fundamental frequency light passes through Raman crystal 7 The effect of Shi Fasheng stimulated Raman scattering, generation wavelength is the one of 1174nm after the intensity of 1064nm fundamental frequency light is more than Raman threshold Rank Stokes Raman light；The 1174nm Raman light vibrated in resonant cavity generates 587nm Huang under the action of frequency-doubling crystal 9 Light is exported by the reflection of harmonic wave piece 8 via yellow light outgoing mirror 10；The effect of acousto-optic Q modulation crystal 6 is by improving peak power To improve the nonlinear conversion efficiency of Raman Process and frequency multiplication process；
The focal length of condenser lens 11 is 100mm, and the 587nm yellow light that yellow light outgoing mirror 10 exports is focused on chrysoberyl crystalline substance It is pumped in body 13；For Chrysoberyl crystal 13 with cut at Brewster angle, crystalline size is 4 × 4 × 15mm3, absorb 587nm Population inversion occurs after yellow light, as pump energy increases, gain is greater than loss, to generate spontaneous radiated photons；Jin Lv Jewel resonant cavity uses four mirror annular lumen type, the first chrysoberyl laser total reflective mirror 12 and the second chrysoberyl laser total reflective mirror 14 It is the concave mirror of 100mm using radius of curvature, 700-800nm high-reflecting film is plated in concave surface, and the angle of two mirrors is 15 °；The green treasured of third gold Stone laser total reflective mirror 15 is flat mirror, plates 700-800nm high-reflecting film on one side；Chrysoberyl laser output mirror 16 is flat mirror, is plated on one side The part 700-800nm penetrates film, transmitance 10%；It is respectively the two-fold of 5mm and 10mm that tuned cell 17, which selects two panels thickness, Filter plate (BRF) is penetrated, the tunable output of chrysoberyl laser is realized by rotation BRF；What Chrysoberyl crystal 13 generated Spontaneous radiation photon is in the first chrysoberyl laser total reflective mirror 12, the second chrysoberyl laser total reflective mirror 14, third chrysoberyl Stable laser generation is formed in the four mirror ring resonators that laser total reflective mirror 15 and chrysoberyl laser output mirror 16 are constituted, is passed through It is exported by chrysoberyl laser output mirror 16.
In the above-described embodiments, laser gain medium can be Nd:YLF, the crystal such as Nd:YALO；Raman crystal can be Ba(NO3)2, NaBrO3, CaWO4, LiIO3Equal crystal；Frequency-doubling crystal can be LBO, LiIO3Equal crystal can also be faced using non- Boundary's phase matched mode realizes frequency multiplication.When specific implementation, the embodiment of the present invention is without limitation.
In the above-described embodiments, when the collocation of laser gain medium, Raman crystal and frequency-doubling crystal is different, each crystal Cutting angle also can be different, while the wavelength of fundamental frequency light, Raman light and yellow light also can be different, cavity mirror, harmonic wave piece and Yellow light outgoing mirror and each crystal coating should also make corresponding change, and specific wavelength can be found in the literature, and the present invention is herein not It repeats again.
Embodiment 2
Laser gain medium in the embodiment of the present invention 2 uses self-raman crystal, therefore can be omitted Raman in a device Crystal, while tuned cell of the dispersing prism as alaxadrite laser is selected, concrete structure schematic diagram is as shown in Figure 2.
808nm or 880nm laser diode pumping source 1 issues pump light, through the transmission of energy-transmission optic fibre 2 and coupled lens group 3 Laser gain medium 5 is pumped after focusing；The Nd:YVO that laser gain medium 5 is cut using a4Crystal, crystalline size 3 ×3×10mm3, doping concentration selection 0.3at.%；The polishing of 5 both ends of laser gain medium, plates 1064nm fundamental frequency light and 1176nm Single order Stokes Raman light anti-reflection film, is placed in heat sink with indium sheet package, controls operating temperature using cooling circulating water system. Cavity mirror 4 is flat mirror, two-sided plating 808nm or 880nm high transmittance film, and the one side close to laser gain medium 5 plates 1064nm With 1176nm high-reflecting film；Harmonic wave piece 7 is flat mirror, two-sided plating 1064nm and 1176nm anti-reflection film, and the one side close to frequency-doubling crystal 8 is plated 588nm high-reflecting film；For frequency-doubling crystal 8 using the lbo crystal of I type-Ⅱphase matching, crystalline size is 3 × 3 × 15mm3, with indium sheet packet It wraps up in and is placed in heat sink, operating temperature is controlled using cooling circulating water system；It is 100mm's that yellow light outgoing mirror 9, which selects radius of curvature, Concave mirror plates 1064nm and 1176nm high-reflecting film, 588nm high transmittance film；
Laser gain medium 5 absorbs 808nm or 880nm pump light and forms population inversion, in cavity mirror 4 and Huang 1064nm fundamental frequency light is generated under the feedback effect for the resonant cavity that light output mirror 9 is constituted；Laser gain medium 5 is that Raman is situated between again simultaneously Matter, when 1064nm fundamental frequency light intensity be more than Raman threshold after be generation wavelength for 1176nm single order Stokes Raman light； The 1176nm Raman light vibrated in resonant cavity generates 588nm yellow light under the action of frequency-doubling crystal 9, passes through the anti-of harmonic wave piece 8 It penetrates and is exported via yellow light outgoing mirror 10；The effect of acousto-optic Q modulation crystal 6 be by improve peak power come improve Raman Process and times The nonlinear conversion efficiency of frequency process；
The focal length of condenser lens 11 is 100mm, and the 588nm yellow light that yellow light outgoing mirror 10 exports is focused on chrysoberyl crystalline substance It is pumped in body 13；13 both ends of the Chrysoberyl crystal polishing of a cutting, plates 700-800nm anti-reflection film, and crystalline size is 3 × 3 ×15mm3, population inversion occurs after absorbing 588nm yellow light, as pump energy increases, gain is greater than loss, to generate Spontaneous radiation photon, and the chrysoberyl laser constituted in chrysoberyl laser total reflective mirror 12 and chrysoberyl laser output mirror 16 Stable laser generation is formed under the action of resonant cavity；Tuned cell 17 is the K9 glass equilateral prism that 3 pieces of side lengths are 10mm, gold Emerald laser line width under the action of dispersing prism is narrowed, by rotating the angle of chrysoberyl laser total reflective mirror 12 come real Existing wavelength tuning, finally exports via chrysoberyl laser output mirror 16；Yellow light feedback mirrors 18 are flat mirror, brilliant close to chrysoberyl The one side of body 13 plates 588nm high-reflecting film, will after Chrysoberyl crystal 13 unabsorbed 588nm yellow light reflection again by Chrysoberyl crystal 13, to improve absorption of the Chrysoberyl crystal 13 to 588nm yellow light.
In the above-described embodiments, laser gain medium can also be Nd:GdVO4, Nd:LuVO4, Nd:KGW etc. from Raman swash Optical medium, respectively corresponds corresponding fundamental frequency light, Raman light and yellow wavelengths, and when specific implementation, the embodiment of the present invention does not do this Limitation.
In the above-described embodiments, laser gain medium, Raman crystal and chrysoberyl can be selected brilliant according to actual needs Doping concentration or size and cavity mirror, the radius of curvature of yellow light outgoing mirror and chrysoberyl laser output mirror of body And transmitance, it can also be by the way of profile pump, when specific implementation, the embodiment of the present invention is without limitation.
In the above-described embodiments, Raman yellow light resonant cavity can also be designed to fold cavity configuration, to control frequency-doubling crystal In spot radius, to realize higher shg efficiency, the embodiment of the present invention is without limitation.
In the above-described embodiments, it can be one as the birefringent filter of tuned cell or dispersing prism to be also possible to Multiple to be used cooperatively, tuned cell is also possible to grating, and optical-unidirectional device can also be added in chrysoberyl laser resonator With etalon to realize that single-frequency exports, when specific implementation, the embodiment of the present invention is without limitation.
The embodiment of the present invention to the model of each device in addition to doing specified otherwise, the model of other devices with no restrictions, As long as the device of above-mentioned function can be completed.
It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, the embodiments of the present invention Serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (6)

1.一种拉曼黄光泵浦的可调谐金绿宝石激光器，其特征是，包括：激光二极管、传能光纤、耦合透镜组、谐振腔反射镜、激光增益介质、拉曼晶体、谐波片、倍频晶体、黄光输出镜、聚焦透镜、金绿宝石晶体、金绿宝石激光全反镜、调谐元件和金绿宝石激光输出镜，激光二极管作为泵浦源发出激光增益介质吸收带内的泵浦光，经传能光纤传输和耦合透镜组聚焦后对激光增益介质进行泵浦；激光增益介质中形成粒子数反转，随着泵浦功率增加，在谐振腔反射镜和黄光输出镜构成的谐振腔的反馈作用下产生基频光；该基频光经过拉曼晶体时发生受激拉曼散射作用，当基频光的强度超过拉曼阈值后产生一阶斯托克斯拉曼光并在谐振腔内振荡；一阶斯托克斯拉曼光在倍频晶体的作用下产生黄光，通过谐波片的反射经由黄光输出镜输出；黄光在聚焦透镜的作用下聚焦于金绿宝石晶体中，使金绿宝石晶体发生粒子数反转，在金绿宝石激光全反镜和金绿宝石激光输出镜构成的谐振腔中形成激光振荡，并在调谐元件的作用下实现激光波长的可调谐输出。1. a tunable chrysoberyl laser pumped by Raman yellow light, is characterized in that, comprises: laser diode, energy transmission fiber, coupling lens group, resonator mirror, laser gain medium, Raman crystal, harmonic Chip, frequency doubling crystal, yellow light output mirror, focusing lens, chrysoberyl crystal, chrysoberyl laser total reflection mirror, tuning element and chrysoberyl laser output mirror, laser diode as pump source to emit laser gain medium absorption band The pump light is transmitted through the energy transmission fiber and focused by the coupling lens group to pump the laser gain medium; the population inversion is formed in the laser gain medium, and as the pump power increases, the resonator mirror and the yellow light output mirror The fundamental frequency light is generated under the feedback of the formed resonant cavity; when the fundamental frequency light passes through the Raman crystal, stimulated Raman scattering occurs, and when the intensity of the fundamental frequency light exceeds the Raman threshold, a first-order Stokes Raman is generated. The light oscillates in the resonant cavity; the first-order Stokes Raman light generates yellow light under the action of the frequency-doubling crystal, and is output through the yellow light output mirror through the reflection of the harmonic plate; the yellow light is focused under the action of the focusing lens In the chrysoberyl crystal, the number of particles in the chrysoberyl crystal is reversed, and the laser oscillation is formed in the resonant cavity composed of the chrysoberyl laser total reflection mirror and the chrysoberyl laser output mirror, and is realized under the action of the tuning element. Tunable output of laser wavelength. 2.如权利要求1所述的拉曼黄光泵浦的可调谐金绿宝石激光器，其特征是，所述激光增益介质和拉曼晶体均两端抛光，镀有所述激光二极管发出的泵浦光及所述增益介质产生的基频光和所述拉曼晶体产生的一阶斯托克斯拉曼光增透膜；其中若激光增益介质为自拉曼激光晶体，即其同时具备产生基频光并将其进行拉曼频移的属性，则所述拉曼黄光泵浦的可调谐金绿宝石激光器中不再设置拉曼晶体。2. The tunable chrysoberyl laser pumped by Raman yellow light as claimed in claim 1, wherein the laser gain medium and the Raman crystal are both polished at both ends, and are coated with the pump that the laser diode sends. The fundamental frequency light generated by the laser light and the gain medium and the first-order Stokes Raman light antireflection coating generated by the Raman crystal; if the laser gain medium is a self-Raman laser crystal, it has the ability to generate With the property of fundamental frequency light and Raman frequency shifting, the Raman crystal is no longer set in the tunable chrysoberyl laser pumped by Raman yellow light. 3.如权利要求1所述的拉曼黄光泵浦的可调谐金绿宝石激光器，其特征是，所述谐振腔反射镜为凹镜或平镜，两面镀所述泵浦光高透膜，靠近激光增益介质的一面镀所述基频光及所述一阶斯托克斯拉曼光高反膜；所述谐波片两面镀基频光和一阶斯托克斯拉曼光高透膜，靠近所述倍频晶体的一面镀所述黄光高反膜；黄光输出镜为凹镜或平镜，镀基频光和一阶斯托克斯拉曼光高反膜，镀黄光高透膜。3. the tunable chrysoberyl laser of Raman yellow light pumping as claimed in claim 1, is characterized in that, described resonator reflecting mirror is a concave mirror or a flat mirror, and the high-transmittance film of described pump light is coated on both sides , the side near the laser gain medium is coated with the fundamental frequency light and the first-order Stokes Raman light high-reflection film; the two sides of the harmonic plate are coated with the fundamental frequency light and the first-order Stokes Raman light height Transparent film, the side close to the frequency-doubling crystal is coated with the yellow light high-reflection film; the yellow light output mirror is a concave mirror or a flat mirror, coated with a high-reflection film for the fundamental frequency light and the first-order Stokes Raman light, and is coated with a high-transmittance yellow light membrane. 4.如权利要求1所述的拉曼黄光泵浦的可调谐金绿宝石激光器，其特征是，所述金绿宝石晶体两端抛光，镀有黄光和波长700-800nm高透膜，若所述金绿宝石晶体是布儒斯特角切割，则无需镀膜。4. The tunable chrysoberyl laser pumped by Raman yellow light as claimed in claim 1, wherein the two ends of the chrysoberyl crystal are polished and coated with yellow light and a high-transmittance film with a wavelength of 700-800nm, If the chrysoberyl crystal is Brewster angle cut, no coating is required. 5.如权利要求1所述的拉曼黄光泵浦的可调谐金绿宝石激光器，其特征是，所述金绿宝石激光全反镜镀波长700-800nm高反膜；所述金绿宝石激光输出镜镀波长700-800nm部分透过膜。5. The Raman yellow light-pumped tunable chrysoberyl laser as claimed in claim 1, wherein the chrysoberyl laser total reflection mirror is coated with a high-reflection film with a wavelength of 700-800 nm; the chrysoberyl The laser output mirror is coated with a partially transparent film with a wavelength of 700-800nm. 6.如权利要求1所述的拉曼黄光泵浦的可调谐金绿宝石激光器，其特征是，所述金绿宝石激光器中还包括：位于激光增益介质与拉曼晶体之间的声光调Q晶体，所述声光调Q晶体两面镀所述基频光和所述一阶斯托克斯拉曼光增透膜，用于实现所述基频光的脉冲运转，提高峰值功率以提高拉曼过程和倍频过程的非线性转换效率。6. The Raman yellow light-pumped tunable chrysanthemum laser as claimed in claim 1, wherein the chrysanthemum laser further comprises: an acousto-optic laser located between the laser gain medium and the Raman crystal Q-switching crystal, the acousto-optic Q-switching crystal is coated with the fundamental frequency light and the first-order Stokes Raman light antireflection coating on both sides, which is used to realize the pulse operation of the fundamental frequency light, increase the peak power to Improve the nonlinear conversion efficiency of Raman process and frequency doubling process.
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