CN106229806A - The tunable alaxadrite laser of Raman gold-tinted pumping - Google Patents
The tunable alaxadrite laser of Raman gold-tinted pumping Download PDFInfo
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- CN106229806A CN106229806A CN201610857560.8A CN201610857560A CN106229806A CN 106229806 A CN106229806 A CN 106229806A CN 201610857560 A CN201610857560 A CN 201610857560A CN 106229806 A CN106229806 A CN 106229806A
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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
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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
- H01S3/30—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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Abstract
The present invention relates to all-solid state laser technical field, for providing tunable alaxadrite laser and with low cost, it is possible to achieve higher light light efficiency.The technical solution used in the present invention is, the tunable alaxadrite laser of Raman gold-tinted pumping, including: laser diode, energy-transmission optic fibre, coupled lens group, cavity mirror, gain medium, Raman crystal, harmonic wave sheet, frequency-doubling crystal, gold-tinted outgoing mirror, condenser lens, Chrysoberyl crystal, chrysoberyl laser total reflective mirror, tuned cell and chrysoberyl laser output mirror, laser diode sends the pump light in gain medium absorption band as pumping source, after energy-transmission optic fibre transmission and coupled lens group focus on, gain medium is carried out pumping；Gain medium is formed population inversion, along with pump power increases, under the feedback effect of cavity mirror and the resonator cavity of gold-tinted outgoing mirror composition, produces fundamental frequency light.Present invention is mainly applied to laser instrument manufacture and design.
Description
Technical field
The present invention relates to all-solid state laser technical field, particularly relate to the tunable chrysoberyl of a kind of Raman gold-tinted pumping
Laser instrument.
Background technology
Chrysoberyl (Cr3+:BeAl2O4) it is a kind of to be provided simultaneously with high power, the laser material of broad tuning excellent properties, by
In its tunability, high-gain and superior temperature characterisitic, alaxadrite laser is paid attention to widely once occurring.Its base
This output spectrum scope is in visible ray near infrared band 700-850nm, can be widely used in space remote sensing, medical treatment, light
Storage, spectroscopy and the numerous research frontier of nonlinear optics.
The method of pumping Chrysoberyl crystal is a lot, and this is owing to chrysoberyl has the widest absorption band, at 400-
700nm all can absorb pump light.The most conventional pump mode mainly has: 1, flash lamp pumping.Industrial processes and commercialization
Medical treatment alaxadrite laser many employings flash lamp pumping mode, this Technical comparing is ripe, but swashs because it absorbs undesirable causing
The conversion efficiency of light device entirety is relatively low, and the heat production of laser instrument is the most serious simultaneously.2,635/680nm HONGGUANG LD pumping.Use
LD pumping Chrysoberyl crystal can be greatly improved the whole efficiency of laser instrument, and realizes the miniaturization of laser instrument, but at present
Powerful 635 and 680nmLD is the rarest, greatly limit the output of alaxadrite laser, and this wave band LD
Price the most costly.3, blue-green Laser pumping.Owing to the absorption band of chrysoberyl covers whole visible light wave range,
Therefore this crystal can be visible with the most common 488nm argon ion laser, copper-vapor laser and 532nm green (light) laser etc.
Light laser is as pumping source, but there is larger quantum loss between pump light and the output light under this pump mode, makes
The heat load obtaining laser instrument is more serious, thus affects the output characteristics such as beam quality.
Summary of the invention
For overcoming the deficiencies in the prior art, it is contemplated that chrysoberyl, on the direction of E//b axle, presents centered by 590nm
The strongest wide absworption peak, the invention provides a kind of by the tunable chrysoberyl laser of the gold-tinted pumping near 590nm wavelength
Device.The present invention uses gold-tinted based on stimulated Raman scattering generation not only to become as the pumping source of tunable alaxadrite laser
This is the cheapest, and owing to it can be directed at the absworption peak of Chrysoberyl crystal, it is possible to achieve higher light light efficiency.The present invention adopts
Technical scheme be that the tunable alaxadrite laser of Raman gold-tinted pumping, including laser diode, energy-transmission optic fibre, coupling
Close battery of lens, cavity mirror, gain medium, Raman crystal, harmonic wave sheet, frequency-doubling crystal, gold-tinted outgoing mirror, focus on thoroughly
Mirror, Chrysoberyl crystal, chrysoberyl laser total reflective mirror, tuned cell and chrysoberyl laser output mirror, laser diode is made
The pump light in gain medium absorption band is sent, to swashing after energy-transmission optic fibre transmission and coupled lens group focus on for pumping source
Optical gain medium carries out pumping；Gain medium is formed population inversion, along with pump power increases, reflects at resonator cavity
Fundamental frequency light is produced under the feedback effect of the resonator cavity that mirror and gold-tinted outgoing mirror are constituted；This fundamental frequency light is subject to through Raman crystal
Swash Raman scattering effect, after the intensity of fundamental frequency light exceedes Raman threshold, produce single order Stokes Raman light and in resonator cavity
Vibration；Raman light produces gold-tinted under the effect of frequency-doubling crystal, is exported via gold-tinted outgoing mirror by the reflection of harmonic wave sheet；Gold-tinted
Focus under the effect of condenser lens in Chrysoberyl crystal, make Chrysoberyl crystal generation population inversion, at Jin Lvbao
The resonator cavity that stone laser total reflective mirror and chrysoberyl laser output mirror are constituted forms laser generation, and in the effect of tuned cell
The lower tunable output realizing optical maser wavelength.
Described gain medium and the polishing of Raman crystal equal two ends, be coated with pump light that described laser diode sends and
The single order Stokes Raman light anti-reflection film that the fundamental frequency light of described gain media generation and described Raman crystal produce；If wherein swashing
Optical gain medium is from raman laser crystal, and i.e. it is provided simultaneously with producing fundamental frequency light and being carried out the attribute of Raman frequency shift, then
The tunable alaxadrite laser of described Raman gold-tinted pumping no longer arranges Raman crystal.
Described cavity mirror is concave mirror or flat mirror, and described pump light high transmittance film is plated on two sides, near gain medium
One side plate described fundamental frequency light and described Raman light high-reflecting film；Described harmonic wave sheet two sides plating fundamental frequency light and Raman light high transmittance film, lean on
The one side of nearly described frequency-doubling crystal plates described gold-tinted high-reflecting film；Gold-tinted outgoing mirror is concave mirror or flat mirror, plating fundamental frequency light and Raman light
High-reflecting film, plates gold-tinted high transmittance film.
Described Chrysoberyl crystal two ends polish, and are coated with gold-tinted and 700-800nm high transmittance film, if described Chrysoberyl crystal
It is cut at Brewster angle, then without plated film.
Described chrysoberyl laser total reflective mirror plating 700-800nm high-reflecting film；Described chrysoberyl laser output mirror plating 700-
800nm part is through film.
Also including in described alaxadrite laser: acousto-optic Q modulation crystal, described fundamental frequency is plated on described acousto-optic Q modulation crystal two sides
Light and described Raman spectra permeable membrane, for realizing the pulse operating of described fundamental frequency light, improve peak power to improve Raman Process
Nonlinear conversion efficiency with frequency multiplication process.
The feature of the present invention and providing the benefit that:
The present invention uses Raman gold-tinted the most with low cost as the pumping source of tunable alaxadrite laser, Er Qieyou
The absworption peak of Chrysoberyl crystal can be directed at, it is possible to achieve higher light light efficiency, simultaneously pump light and output light in it
Excited state is the least, it is possible to increase the output performance of alaxadrite laser, meets the multiple needs in reality application.
Accompanying drawing illustrates:
The structure of the tunable alaxadrite laser of a kind of Raman gold-tinted pumping that Fig. 1 provides for the embodiment of the present invention 1
Schematic diagram.
In accompanying drawing, the list of parts representated by each label is as follows:
1: laser diode；2: energy-transmission optic fibre；
3: coupled lens group；4: cavity mirror；
5: gain medium；6: Raman crystal；
7: acousto-optic Q modulation crystal；8: harmonic wave sheet；
9: frequency-doubling crystal；10: gold-tinted 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: the three chrysoberyl laser total reflective mirrors；16: chrysoberyl laser output mirror
17: tuned cell.
The structure of the tunable alaxadrite laser of a kind of Raman gold-tinted pumping that Fig. 2 provides for the embodiment of the present invention 2
Schematic diagram.
In accompanying drawing, 18: gold-tinted feedback mirrors.
Detailed description of the invention
In view of chrysoberyl on the direction of E//b axle, centered by 590nm, present the strongest wide absworption peak, the present invention
Provide a kind of tunable alaxadrite laser by the gold-tinted pumping near 590nm wavelength.The present invention uses based on being excited
The gold-tinted that Raman scattering produces is the most with low cost as the pumping source of tunable alaxadrite laser, and owing to it can
The absworption peak of alignment Chrysoberyl crystal, it is possible to achieve higher light light efficiency.Described below:
For making the object, technical solutions and advantages of the present invention clearer, below embodiment of the present invention is made further
Ground describes in detail.
Embodiment 1
Chrysoberyl (Cr3+:BeAl2O4) crystal is the laser material of a kind of function admirable, its absorption spectrum is being ground
Study carefully middle discovery, three major axes orientations of this crystal are respectively provided with bigger absorption cross-section in yellow band, especially at E//b axle
Direction on, centered by 590nm, present the strongest wide absworption peak.Therefore, either polarized light pumping or unpolarized optical pumping
Pu, uses gold-tinted pumping Chrysoberyl crystal can realize fully absorbing of pump light.Alaxadrite laser as compared with the past
Pump mode, propose to use Raman gold-tinted as the pumping source of tunable alaxadrite laser, the most with low cost, and
Owing to it can be directed at the absworption peak of Chrysoberyl crystal, it is possible to achieve higher light light efficiency, pump light and output light simultaneously
Excited state the least, it is possible to increase the output performance of alaxadrite laser, meet reality application in multiple needs.
The embodiment of the present invention 1 provides the tunable alaxadrite laser structure of a kind of Raman gold-tinted pumping, such as Fig. 1 institute
Show.
808nm or 880nm laser diode pumping source 1 sends pump light, through energy-transmission optic fibre 2 transmission and coupled lens group 3
After focusing, gain medium 5 is carried out pumping；Gain medium 5 uses Nd:YAG crystal, and crystalline size is 3 × 3 ×
10mm3, doping content selects 0.5at.%；Raman crystal 6 selects the GdVO that a cuts4Crystal, crystalline size is 3 × 3 ×
10mm3；Gain medium 5 and the polishing of Raman crystal 6 equal two ends, plating 1064nm fundamental frequency light and 1174nm single order Stokes draw
Graceful smooth anti-reflection film, respectively with indium sheet parcel be placed in heat sink in, use cooling circulating water system control operating temperature.Resonator cavity reflects
Mirror 4 is flat mirror, two-sided plating 808nm or 880nm high transmittance film, high near one side plating 1064nm and 1174nm of gain medium 5
Anti-film；Harmonic wave sheet 8 is flat mirror, two-sided plating 1064nm and 1174nm anti-reflection film, high anti-near the one side plating 587nm of frequency-doubling crystal 9
Film；Frequency-doubling crystal 9 uses the ktp crystal of II type-Ⅱphase matching, and crystalline size is 3 × 3 × 15mm3, it is placed in heat with indium sheet parcel
In Chen, cooling circulating water system is used to control operating temperature；The concave mirror that gold-tinted outgoing mirror 10 selects radius of curvature to be 100mm, plating
1064nm and 1174nm high-reflecting film, 587nm high transmittance film；
Gain medium 5 absorbs 808nm or 880nm pump light and forms population inversion, at cavity mirror 4 and Huang
1064nm fundamental frequency light is produced under the feedback effect of the resonator cavity that light outgoing mirror 10 is constituted；1064nm fundamental frequency light is through Raman crystal 7
Shi Fasheng stimulated Raman scattering effect, producing wavelength after the intensity of 1064nm fundamental frequency light exceedes Raman threshold is the one of 1174nm
Rank Stokes Raman light；In resonator cavity, the 1174nm Raman light of vibration produces 587nm Huang under the effect of frequency-doubling crystal 9
Light, is exported via gold-tinted outgoing mirror 10 by the reflection of harmonic wave sheet 8；The effect of acousto-optic Q modulation crystal 6 is by improving peak power
Improve Raman Process and the nonlinear conversion efficiency of frequency multiplication process；
The focal length of condenser lens 11 is 100mm, and it is brilliant that the 587nm gold-tinted exported by gold-tinted outgoing mirror 10 focuses on chrysoberyl
To its pumping in body 13；Chrysoberyl crystal 13 is with cut at Brewster angle, and crystalline size is 4 × 4 × 15mm3, absorb 587nm
Population inversion occurs after gold-tinted, and along with pump energy increases, gain is more than loss, thus produces spontaneous radiated photons；Jin Lv
Gem resonator cavity uses four mirror annular lumen type, the first chrysoberyl laser total reflective mirror 12 and the second chrysoberyl laser total reflective mirror 14
Using radius of curvature to be the concave mirror of 100mm, concave surface plating 700-800nm high-reflecting film, the angle of two mirrors is 15 °；The 3rd green treasured of gold medal
Stone laser total reflective mirror 15 is flat mirror, one side plating 700-800nm high-reflecting film；Chrysoberyl laser output mirror 16 is flat mirror, one side plating
700-800nm part is through film, and transmitance is 10%；Tuned cell 17 selects two panels thickness to be respectively the two-fold of 5mm and 10mm
Penetrate filter plate (BRF), by rotating BRF to realize the tunable output of chrysoberyl laser；Chrysoberyl crystal 13 produces
Spontaneous radiation photon is at the first chrysoberyl laser total reflective mirror 12, the second chrysoberyl laser total reflective mirror 14, the 3rd chrysoberyl
The four mirror ring resonators that laser total reflective mirror 15 and chrysoberyl laser output mirror 16 are constituted form stable laser generation, warp
Exported by chrysoberyl laser output mirror 16.
In the above-described embodiments, gain medium can be the crystal such as Nd:YLF, Nd:YALO；Raman crystal can be
Ba(NO3)2, NaBrO3, CaWO4, LiIO3In crystal；Frequency-doubling crystal can be LBO, LiIO3In crystal, it is also possible to use non-facing
Boundary's phase matched pattern realizes frequency multiplication.When implementing, the embodiment of the present invention is without limitation.
In the above-described embodiments, when the collocation of gain medium, Raman crystal and frequency-doubling crystal is different, each crystal
Cutting angle also can be different, and the wavelength of fundamental frequency light, Raman light and gold-tinted also can be different simultaneously, cavity mirror, harmonic wave sheet and
Gold-tinted outgoing mirror and each crystal coating also should make respective change, and concrete wavelength the most all can be found, and the present invention is at this not
Repeat again.
Embodiment 2
Gain medium in the embodiment of the present invention 2 uses self-raman crystal, can omit Raman the most in a device
Crystal, selects dispersing prism as the tuned cell of alaxadrite laser simultaneously, and concrete structure schematic diagram is as shown in Figure 2.
808nm or 880nm laser diode pumping source 1 sends pump light, through energy-transmission optic fibre 2 transmission and coupled lens group 3
After focusing, gain medium 5 is carried out pumping；Gain medium 5 uses the Nd:YVO that a cuts4Crystal, crystalline size is 3
×3×10mm3, doping content selects 0.3at.%；Gain medium 5 two ends polish, plating 1064nm fundamental frequency light and 1176nm
Single order Stokes Raman light anti-reflection film, with indium sheet parcel be placed in heat sink in, use cooling circulating water system control operating temperature.
Cavity mirror 4 is flat mirror, two-sided plating 808nm or 880nm high transmittance film, near the one side plating 1064nm of gain medium 5
With 1176nm high-reflecting film；Harmonic wave sheet 7 is flat mirror, two-sided plating 1064nm and 1176nm anti-reflection film, near the one side plating of frequency-doubling crystal 8
588nm high-reflecting film；Frequency-doubling crystal 8 uses the lbo crystal of I type-Ⅱphase matching, and crystalline size is 3 × 3 × 15mm3, use indium sheet bag
Wrap up in be placed in heat sink in, use cooling circulating water system control operating temperature；Gold-tinted outgoing mirror 9 selects radius of curvature to be 100mm's
Concave mirror, plates 1064nm and 1176nm high-reflecting film, 588nm high transmittance film；
Gain medium 5 absorbs 808nm or 880nm pump light and forms population inversion, at cavity mirror 4 and Huang
1064nm fundamental frequency light is produced under the feedback effect of the resonator cavity that light outgoing mirror 9 is constituted；Gain medium 5 is again that Raman is situated between simultaneously
Matter, i.e. produces the single order Stokes Raman light that wavelength is 1176nm after the intensity of 1064nm fundamental frequency light exceedes Raman threshold；
In resonator cavity, the 1176nm Raman light of vibration produces 588nm gold-tinted under the effect of frequency-doubling crystal 9, anti-by harmonic wave sheet 8
Penetrate and export via gold-tinted outgoing mirror 10；The effect of acousto-optic Q modulation crystal 6 be by improve peak power improve Raman Process and times
Frequently the nonlinear conversion efficiency of process；
The focal length of condenser lens 11 is 100mm, and it is brilliant that the 588nm gold-tinted exported by gold-tinted outgoing mirror 10 focuses on chrysoberyl
To its pumping in body 13；The Chrysoberyl crystal 13 two ends polishing of a cutting, plates 700-800nm anti-reflection film, and crystalline size is 3 × 3
×15mm3, there is population inversion after absorbing 588nm gold-tinted, along with pump energy increases, gain is more than loss, thus produces
Spontaneous radiation photon, and the chrysoberyl laser constituted at chrysoberyl laser total reflective mirror 12 and chrysoberyl laser output mirror 16
The effect of resonator cavity is lower forms stable laser generation；Tuned cell 17 be 3 pieces of length of sides be the K9 glass equilateral prism of 10mm, gold
Emerald laser live width under the effect of dispersing prism is narrowed, and comes real by the angle rotating chrysoberyl laser total reflective mirror 12
Existing wavelength tuning, finally exports via chrysoberyl laser output mirror 16；Gold-tinted feedback mirrors 18 is flat mirror, brilliant near chrysoberyl
Body 13 one side plating 588nm high-reflecting film, will after Chrysoberyl crystal 13 unabsorbed 588nm gold-tinted reflection again by
Chrysoberyl crystal 13, to improve the Chrysoberyl crystal 13 absorption to 588nm gold-tinted.
In the above-described embodiments, gain medium can also be Nd:GdVO4, Nd:LuVO4, Nd:KGW etc. swashs from Raman
Light medium, the most corresponding corresponding fundamental frequency light, Raman light and yellow wavelengths, when implementing, this is not done by the embodiment of the present invention
Limit.
In the above-described embodiments, gain medium, Raman crystal and chrysoberyl can be selected according to actual needs brilliant
The doping content of body or size, and cavity mirror, gold-tinted outgoing mirror and the radius of curvature of chrysoberyl laser output mirror
And transmitance, it is also possible to using the mode of profile pump, when implementing, the embodiment of the present invention is without limitation.
In the above-described embodiments, Raman gold-tinted resonator cavity can also be designed to refrative cavity structure, in order to controls frequency-doubling crystal
In spot radius, thus realize higher shg efficiency, the embodiment of the present invention is without limitation.
In the above-described embodiments, can be one as the birefringent filter of tuned cell or dispersing prism can also be
Multiple with the use of, tuned cell can also be grating, it is also possible in chrysoberyl laserresonator add optical-unidirectional device
With etalon to realize single-frequency output, when implementing, the embodiment of the present invention is without limitation.
The embodiment of the present invention is to the model of each device in addition to doing specified otherwise, and the model of other devices does not limits,
As long as the device of above-mentioned functions can be completed.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment
Sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (6)
1. a tunable alaxadrite laser for Raman gold-tinted pumping, is characterized in that, including: laser diode, biography can light
Fibre, coupled lens group, cavity mirror, gain medium, Raman crystal, harmonic wave sheet, frequency-doubling crystal, gold-tinted outgoing mirror,
Condenser lens, Chrysoberyl crystal, chrysoberyl laser total reflective mirror, tuned cell and chrysoberyl laser output mirror, laser two
Pole pipe sends the pump light in gain medium absorption band as pumping source, focuses on through energy-transmission optic fibre transmission and coupled lens group
Afterwards gain medium is carried out pumping；Gain medium forms population inversion, along with pump power increases, at resonance
Fundamental frequency light is produced under the feedback effect of the resonator cavity that resonant reflec-tors and gold-tinted outgoing mirror are constituted；This fundamental frequency light is through Raman crystal
There is stimulated Raman scattering effect, after the intensity of fundamental frequency light exceedes Raman threshold, produce single order Stokes Raman light and humorous
The intracavity that shakes vibrates；Raman light produces gold-tinted under the effect of frequency-doubling crystal, defeated via gold-tinted outgoing mirror by the reflection of harmonic wave sheet
Go out；Gold-tinted focuses in Chrysoberyl crystal under the effect of condenser lens, makes Chrysoberyl crystal generation population inversion,
The resonator cavity that chrysoberyl laser total reflective mirror and chrysoberyl laser output mirror are constituted forms laser generation, and at tuned cell
Effect under realize the tunable output of optical maser wavelength.
2. the tunable alaxadrite laser of Raman gold-tinted pumping as claimed in claim 1, is characterized in that, described laser increases
Benefit medium and the polishing of Raman crystal equal two ends, be coated with pump light that described laser diode sends and described gain media produces
The single order Stokes Raman light anti-reflection film that fundamental frequency light and described Raman crystal produce；If wherein gain medium is from Raman
Laser crystal, i.e. it is provided simultaneously with producing fundamental frequency light and being carried out the attribute of Raman frequency shift, the most described Raman gold-tinted pumping
Tunable alaxadrite laser no longer arranges Raman crystal.
3. the tunable alaxadrite laser of Raman gold-tinted pumping as claimed in claim 1, is characterized in that, described resonator cavity
Reflecting mirror is concave mirror or flat mirror, and described pump light high transmittance film is plated on two sides, and the one side near gain medium plates described fundamental frequency light
And described Raman light high-reflecting film；Described harmonic wave sheet two sides plating fundamental frequency light and Raman light high transmittance film, near the one of described frequency-doubling crystal
Described gold-tinted high-reflecting film is plated in face；Gold-tinted outgoing mirror is concave mirror or flat mirror, plating fundamental frequency light and Raman light high-reflecting film, and plating gold-tinted is high thoroughly
Film.
4. the tunable alaxadrite laser of Raman gold-tinted pumping as claimed in claim 1, is characterized in that, the green treasured of described gold
Stone crystal two ends polish, and are coated with gold-tinted and 700-800nm high transmittance film, if described Chrysoberyl crystal is cut at Brewster angle,
Then without plated film.
5. the tunable alaxadrite laser of Raman gold-tinted pumping as claimed in claim 1, is characterized in that, the green treasured of described gold
Stone laser total reflective mirror plating 700-800nm high-reflecting film；Described chrysoberyl laser output mirror plating 700-800nm part is through film.
6. the tunable alaxadrite laser of Raman gold-tinted pumping as claimed in claim 1, is characterized in that, the green treasured of described gold
Also including in stone laser instrument: acousto-optic Q modulation crystal, described fundamental frequency light is plated on described acousto-optic Q modulation crystal two sides and described Raman light is anti-reflection
Film, for realizing the pulse operating of described fundamental frequency light, improves peak power to improve the non-linear of Raman Process and frequency multiplication process
Conversion efficiency.
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| CN113381279A (en) * | 2021-06-04 | 2021-09-10 | 河北工业大学 | Narrow-linewidth ultraviolet Raman laser |
| CN113381279B (en) * | 2021-06-04 | 2022-05-31 | 河北工业大学 | Narrow-linewidth ultraviolet Raman laser |
| CN114122880A (en) * | 2021-11-22 | 2022-03-01 | 西北大学 | Single-frequency yellow-green laser with tunable wavelength |
| CN114122880B (en) * | 2021-11-22 | 2023-06-30 | 西北大学 | Wavelength tunable single-frequency yellow-green laser |
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