CN105552709B - A kind of single-frequency solid Roman laser - Google Patents
A kind of single-frequency solid Roman laser Download PDFInfo
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- CN105552709B CN105552709B CN201610125285.0A CN201610125285A CN105552709B CN 105552709 B CN105552709 B CN 105552709B CN 201610125285 A CN201610125285 A CN 201610125285A CN 105552709 B CN105552709 B CN 105552709B
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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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- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The present invention relates to a kind of single-frequency solid Roman lasers,Belong to the technical field of laser,Device includes pumping source,Coupled lens group,Laser gain medium,Raman crystal,Hysteroscope M1,Hysteroscope M3,Hysteroscope M4,Spectroscope M5 and temperature control system,Pumping source exports pump light,Along the direction of propagation of the pump light, coupled lens group is set,Hysteroscope M1,Laser gain medium,Raman crystal,Hysteroscope M3,First FP etalons,2nd FP etalons,Hysteroscope M4,Spectroscope M5,Laser gain medium,The outside of Raman crystal is equipped with temperature control system,It can realize the single-frequency raman laser output of stable high-peak power,It can be used for Sodium guide star,Non-linear conversion,Terahertz generation,The fields such as laser medicine,It is wide with relevance grade,It is compact-sized,Stability is good,It is easy to operate,It is at low cost,The features such as being conducive to industrialization production.
Description
Technical field
The present invention relates to a kind of single-frequency solid Roman lasers, belong to the technical field of laser.
Background technology
Single-frequency laser is due to the advantages that its coherence length is long, breadth of spectrum line is narrow, noise is small, in laser radar, Laser Measuring
It is widely applied away from having in, fields such as laser medicine, spectroscopy and nonlinear optical frequency conversion.Swash at present in solid-state single-frequency
It is general using insertion etalon or birefringent filter etc. in torsion mode resonant cavity, short oscillation cavity, resonant cavity in the research of light device
Method makes laser be operated in a manner of single longitudinal mode.
Ramar laser is the laser based on stimulated Raman scattering principle, and by it, it is sharp can to obtain many solids for we
The special wavelength that light device cannot directly emit.The raman laser output spectrum one that current generation many normal Raman lasers are realized
As wider [Such as H.N.Zhang, X.H.Chen, Q.P.Wang, X.Y.Zhang, J.Chang, L.Gao, H.B.Shen,
Z.H.Cong,Z.J.Liu,X.T.Tao and P.Li,Opt.Letter.39(9),2014]It cannot meet in remote sensing, laser thunder
It reaches, the fields such as adaptive optics are to certain special applications demands of laser linewidth.
Chinese patent document CN103779766A (application number CN201410002628.5) discloses a kind of Nd:YAG/Ba
(NO3)2Single-frequency solid Roman laser, what when Patent design selected is three hysteroscopes coupling cavity configuration, and is added in fundamental frequency chamber
Etalon realizes that single-frequency fundamental frequency light output carrys out pumping Raman crystal to obtain the output of single-frequency Raman.Theoretically to realize that Raman is defeated
Going out intracavitary optical power density must be very high, but to obtain single-frequency fundamental frequency light, by etalon, (fundamental frequency light is anti-in the patent document
Penetrate rate 35%) it is put into fundamental frequency intracavitary severe attrition intracavitary optical power density so that and Raman light starting of oscillation is difficult.In the patent document
The structure used in embodiment, the raman cavity longitudinal mode spacing that the structure is exported for realization single-frequency Raman have to be larger than Raman crystal
Gain spectrum width, therefore the Raman crystal such as Ba (NO that the patent can only select gain spectrum width narrow as possible3)2, to limit this specially
The relevance grade of profit.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of single-frequency solid Roman lasers, and the laser is using mark
Quasi- tool coupler or straight chamber all solid state laser structure can ensure that output light is pulse or continuous, single-frequency and has
There is the features such as compact-sized, stability is good, applied widely.
Technical scheme is as follows：
A kind of single-frequency solid Roman laser, including pumping source, coupled lens group, laser gain medium, Raman crystal, chamber
Mirror M1, hysteroscope M3, hysteroscope M4, spectroscope M5 and temperature control system, pumping source exports pump light, along the propagation of the pump light
Coupled lens group, hysteroscope M1, laser gain medium, Raman crystal, hysteroscope M3, the first FP etalons, the 2nd FP marks is arranged in direction
Quasi- tool, hysteroscope M4, spectroscope M5, hysteroscope M1 and hysteroscope M3 constitute fundamental frequency optical cavity, and hysteroscope M1 constitutes Raman light with hysteroscope M4
Resonant cavity, laser gain medium, Raman crystal outside be equipped with temperature control system.FP etalons are Fabry-Perot (F-
P) etalon, laser gain medium, Raman crystal, which are placed in temperature control system, keeps above-mentioned crystal and device temperature permanent
Determine to reduce crystal thermal effect in laser chamber；Hysteroscope M1 and hysteroscope M3 constitute fundamental frequency optical cavity, in fundamental frequency optical cavity
Interior oscillation generates fundamental frequency light, and hysteroscope M1 and hysteroscope M4 constitutes Raman optical cavity, vibrated in Raman optical cavity and generate Raman light,
Straight chamber all solid state laser structure is formed with this, hysteroscope M3 also functions to the effect of isolation fundamental frequency light, prevents fundamental frequency light from getting to standard
Failure criteria has on tool.
According to currently preferred, the single-frequency solid Roman laser further includes hysteroscope M2, and hysteroscope M2 is located at laser increasing
Between beneficial medium and Raman crystal, hysteroscope M2 constitutes Raman optical cavity with hysteroscope M4.Increase hysteroscope M2, makes hysteroscope M1 and hysteroscope
M3 constitutes fundamental frequency optical cavity, and hysteroscope M2 constitutes Raman optical cavity with hysteroscope M4, coupler all solid state laser is formed with this
Structure, the chamber for shortening Raman optical cavity is long, increases the optical power density in Raman optical cavity, reduces the damage of raman cavity
Consumption, it is easier to realize that Raman is converted.
It is further preferred that the single-frequency solid Roman laser further includes Q-switching device, Q-switching device is located at laser gain
Between medium and hysteroscope M2, temperature control system is equipped with outside Q-switching device, Q-switching device is active Q-switching device or passive Q-adjusted device
Part.Increase and use inner cavity Q-regulating technique, single-frequency laser pulse output can be obtained, without exporting continuous single-frequency Raman when Q-switching device
Light exports pulse single-frequency Raman light when having Q-switching device.
It is further preferred that being coated on two thang-kng end faces of the laser gain medium, Q-switching device to pumping
Light, fundamental frequency light and Raman light light transmission rate are more than 99% anti-reflection film.
It is coated with to fundamental frequency light and Raman light light according to the two of currently preferred, described Raman crystal thang-kng end faces
Transmitance is more than 99% anti-reflection film.
It is coated with according to currently preferred, described hysteroscope M1 and 99% is more than, to fundamental frequency light and drawing to pumping light transmission rate
Graceful light reflectivity is all higher than 99% deielectric-coating.
It is further preferred that the hysteroscope M1 is average mirror or plano-concave mirror or planoconvex lens.
It is further preferred that the hysteroscope M2 be coated with it is big to Raman light reaction rate more than 99% to fundamental frequency light transmission rate
In 99% deielectric-coating.
It is further preferred that the hysteroscope M2 is average mirror or plano-concave mirror or planoconvex lens.
It is coated with according to currently preferred, described hysteroscope M3 and fundamental frequency light reflectivity penetrates Raman light more than 99%
Rate is more than 99% deielectric-coating.Turned to be easier realization Raman with enhancing fundamental frequency optical power density in Raman light resonator
It changes.
It is coated with according to currently preferred, described hysteroscope M4 and fundamental frequency light transmission rate penetrates Raman light more than 99%
Deielectric-coating of the rate between 1%-99%.
It is coated with according to currently preferred, described spectroscope M5 saturating to Raman light more than 99% to fundamental frequency light reflectivity
Cross the deielectric-coating that rate is more than 99%.Spectroscope M5 is for detaching fundamental frequency light and Raman light.
It is to mix Nd according to currently preferred, described laser gain medium3+Crystal, glass, ceramics any one,
Or any one of the crystal of Yb, ceramics, glass are mixed, the length of laser gain medium is 0.5mm-50mm, and doping concentration is
1%-10%.
It is tungstates (such as BaWO according to currently preferred, described Raman crystal4、SrWO4、CaWO4), nitrate (such as
Ba(NO3)2), molybdate (such as CaMoO4、BaTeMo2O9), KTP, KTA, diamond any one, the length of Raman crystal is
0.5mm-100mm。
Above-mentioned laser gain medium, Raman crystal listed material be used in laser well known to those skilled in the art
Material.
It is that Raman light part penetrates according to the first currently preferred, described FP etalons, the 2nd FP etalons, thoroughly
It is 1%-99%, thickness 0.1mm-50mm to cross rate.
According to currently preferred, the pumping source is quasi-continuous pumping source or continuous pumping source.Quasi-cw pumping source
Frequency range is 1-1000Hz, and duration ranges are 1 μ s-10ms.
Cavity configuration is coupled using three mirror straight cavity structures and further four mirror in the present invention, is put in raman cavity
Enter etalon and realizes the output of single-frequency Raman.Need to only be put into that etalon thick matches according to different Raman crystal property can be real
Existing different single-frequency Raman output, therefore the present invention has strict demand unlike the prior art to Raman crystal.
The performance of various criterion tool mainly has following two parameters to characterize, select：
1. the frequency interval Δ ν of each centre frequency
Wherein, c is the spread speed of light, and n is etalon refractive index, and d is etalon thick.
2. transmiting the half breadth of spectral line
Centre wavelength is λcThe free spectrum width that is indicated with wavelength of spectral line be Δ λc
Wherein, λ is optical maser wavelength, and R is etalon reflectivity, and subscript c is meant in centre wavelength " centre " English "
The abbreviation of center "；
Or it is expressed as with frequency interval
The free spectrum width Delta λ of different Raman crystal outputscDifferent, the thickness of the first FP etalons determines this
The frequency interval Δ ν of etalon1As long as this frequency interval Δ ν1>Free spectrum frequency interval Δ νcLine width can tentatively be obtained
A less output of narrow, longitudinal mode number, then the frequency interval Δ ν of the 2nd FP etalons2As long as being more than the first FP standards
The frequency interval Δ ν of tool1Single longitudinal mode can be selected.It may choose whether that Q-switching device is added in fundamental frequency chamber of the present invention, be added without tune
Q devices can realize that single-frequency raman laser continuously exports, and single-frequency Raman light pulse output can be achieved after Q-switching device is added.
The beneficial effects of the present invention are：
1. the present invention has the advantages that compact, efficient, stability is good, can be good at realizing widening for laser wavelength range
Obtain the special wavelength of various special applications.
2. the present invention is combined together monochromatic laser technology and raman laser technological perfectionism, using single-frequency solid Roman
Laser structure obtains the single-frequency Raman light output of various new wavelength.
3. fitness of the present invention is wide, various laser gain mediums can be replaced, Raman crystal obtains the single-frequency of various wavelength
Raman laser exports, and meets the requirement to different wave length in practical application.
4. the present invention uses quasi-cw pumping source or continuous pumping source, quasi-cw pumping source can reduce laser gain medium
Fuel factor can maximize the output effect of optimization laser under the premise of ensureing the output of laser single-frequency.
5. inner cavity Q-regulating technique can be used in the present invention, single-frequency laser pulse output can be obtained.
6. the present invention places hysteroscope M2 before the Raman crystal, raman cavity length can greatly be shortened with implementation pattern
It is exported with readily available single-frequency.
7. the present invention, using double etalon structures, the single-frequency laser that can obtain the more narrow linewidth than other single-frequency lasers is defeated
Go out.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 3 be embodiment 2 be added etalon after single-frequency Raman light average output power with average pump power change
Change figure；
Fig. 4 is the single-frequency Raman light FP interference circles of embodiment 2；
Fig. 5 is the single-frequency Raman light pulse diagram of embodiment 2；
Wherein：1, pumping source；2, coupled lens group；3, hysteroscope M1；4, laser gain medium；5, Q-switching device；6, hysteroscope
M2；7, Raman crystal；8, hysteroscope M3；9, the first FP etalons；10, the 2nd FP etalons；11, hysteroscope M4；12, spectroscope M5.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples, but not limited to this.
Embodiment 1：
The laser structure of the present embodiment is as shown in Figure 1.
A kind of single-frequency solid Roman laser, including pumping source, coupled lens group, laser gain medium, Q-switching device, drawing
Graceful crystal, hysteroscope M1, hysteroscope M3, hysteroscope M4, spectroscope M5 and temperature control system, pumping source exports pump light, along the pump
Coupled lens group, hysteroscope M1, laser gain medium, Q-switching device, Raman crystal, hysteroscope M3, first is arranged in the direction of propagation of Pu light
FP etalons, the 2nd FP etalons, hysteroscope M4, spectroscope M5, laser gain medium, Q-switching device, Raman crystal outside be all provided with
There is temperature control system.Laser gain medium, Q-switching device, Raman crystal, which are placed in temperature control system, keeps above-mentioned crystal
And device temperature is constant to reduce crystal thermal effect in laser cavity；Hysteroscope M1 and hysteroscope M3 constitute fundamental frequency optical cavity,
Oscillation generates fundamental frequency light in fundamental frequency optical cavity, and hysteroscope M1 and hysteroscope M4 constitutes Raman optical cavity, shakes in Raman optical cavity
Generation Raman light is swung, straight chamber all solid state laser structure is formed with this, hysteroscope M3 also functions to the effect of isolation fundamental frequency light, prevents base
Frequency light is got to failure criteria on etalon and is had.Pumping source is continuous pumping source, and hysteroscope M1 is plano-concave mirror, and M2 is average mirror, laser
Gain media is Nd:YVO4, Nd:YVO4Length be 0.5mm, doping concentration 1%；Raman crystal is CaWO4, CaWO4Length
Degree is 100mm；First FP etalon thicks are 0.1mm, and the 2nd FP etalon thicks are 50mm.
Embodiment 2：
A kind of single-frequency solid Roman laser, structure is as described in Example 1, and difference lies in further include hysteroscope M2, hysteroscope
M2 is between laser gain medium and Raman crystal, as shown in Figure 2.Increase hysteroscope M2, hysteroscope M1 is made to constitute base with hysteroscope M3
Frequency optical cavity, hysteroscope M2 constitute Raman optical cavity with hysteroscope M4, coupler all solid state laser structure are formed with this, shorten
The chamber of Raman optical cavity is long, increases the optical power density in Raman optical cavity, reduces the loss of raman cavity, it is easier to
Realize Raman conversion.
The laser structure of the present embodiment is as shown in Fig. 2, setting is coupled lens group, hysteroscope along the direction of propagation of pump light
M1, laser gain medium, Q-switching device, hysteroscope M2, Raman crystal, hysteroscope M3, the first FP etalons, the 2nd FP etalons, hysteroscope
M4, spectroscope M5.Hysteroscope M1 and hysteroscope M3 constitutes fundamental frequency optical cavity, and hysteroscope M2 constitutes Raman optical cavity with hysteroscope M4, with
This forms coupler all solid state laser structure.
Laser gain medium, Q-switching device two thang-kng end faces on be coated with it is saturating to pump light, fundamental frequency light and Raman light light
Cross the anti-reflection film that rate is more than 99%；Two thang-kng end faces of Raman crystal, which are coated with, is more than fundamental frequency light and Raman light light transmission rate
99% anti-reflection film.
Pumping source operation wavelength is 808nm, and peak power output 60W, pump mode is quasi-cw pumping, quasi-continuous pump
Pu pumps for 2ms/20ms, i.e.,：20ms (50Hz), each duration 2ms are divided between pumping.Coupled lens group is by two lens
Composition, 1:1 coupling output, fiber numerical aperture 0.22 focus on Nd:Spot diameter on GGG crystal is 600 μm.
Laser gain medium 4 is Nd:GGG, size are 3 × 3 × 10mm3, length 10mm, Nd3+Doping concentration be
1%.
Raman crystal is BaWO4, size is 5 × 5 × 42.5mm3, length 42.5mm.
Q-switching device is quartz glass.
First FP etalon thicks are 1.5mm, 50% transmitance of 1178nm Raman lights；2nd FP etalon thicks are 8mm,
50% transmitance of 1178nm Raman lights.
Hysteroscope M1 is coated with to pump light (wavelength 808nm) transmitance more than 99% and to fundamental frequency light (wavelength 1062nm), drawing
Graceful light (wavelength 1178nm) reflectivity is more than 99% deielectric-coating；Hysteroscope M1 is average mirror.
Hysteroscope M2 is coated with the deielectric-coating more than 99% and to Raman light reaction rate more than 99% to fundamental frequency light transmission rate；Hysteroscope
M2 is plano-concave mirror.Using the purpose of hysteroscope M2 primarily to reducing the loss of Raman optical cavity, it is easier to realize that Raman turns
It changes.
Hysteroscope M3 is coated with the deielectric-coating more than 99% and to Raman light transmission rate more than 99% to fundamental frequency light reflectivity, enhancing
Fundamental frequency optical power density is converted to be easier realization Raman in raman cavity.
The deielectric-coating that it is 14% to Raman light transmission rate more than 99% to fundamental frequency light transmission rate that hysteroscope M4, which is coated with,.
Spectroscope M5 is for detaching fundamental frequency light and Raman light and being coated with to fundamental frequency light reflectivity more than 99% and to Raman light
Transmitance is more than 99% deielectric-coating.
Being added as shown in Figure 3 after etalon realizes stable single-frequency Raman light output can obtain when pump power is 2.139W
To maximum average output power 24mW, light --- light conversion efficiency 1.1%.Since raman laser efficiency itself is relatively low, and
Or single-frequency, the output Raman light of the single-frequency solid Roman laser described in the present embodiment is more efficiently.
The longitudinal mode number measured after etalon is added as shown in Figure 4 only realizes single-frequency Raman light output there are one visible.It is logical
It crosses and other Raman crystals is tested, single-frequency Raman light output can be realized using technical scheme of the present invention.
The laser pulse figure after stable single-frequency Raman light output, pulsewidth 6.2ns, peak-peak are realized as shown in Figure 5
Power is 1.93kW.The present invention not only can be adapted for a variety of Raman crystals, and the single-frequency Raman light of output is also very steady, stablizes
Property it is high.
Embodiment 3:
A kind of single-frequency solid Roman laser, structure is as described in Example 2, and difference lies in the first FP etalon thicks
For 1.5mm, the 2nd FP etalon thicks are 15mm；Laser gain medium is ceramics Nd:YAG, Nd:The length of YAG is 50mm, is mixed
Miscellaneous a concentration of 10%；Raman crystal is diamond, the length 0.5mm of diamond；Hysteroscope M1 is planoconvex lens, and hysteroscope M2 is plano-convex
Mirror.
Embodiment 4:
A kind of single-frequency solid Roman laser, structure is as described in Example 2, and difference lies in laser gain medium Yb:
YVO4, Yb:YVO4Length be 20mm, doping concentration 1%；Raman crystal is Ba (NO3)2, Ba (NO3)2Length is 20mm；The
One FP etalon thicks are 1.5mm, and the 2nd FP etalon thicks are 15mm.
Embodiment 5:
A kind of single-frequency solid Roman laser, structure is as described in Example 2, and difference lies in laser gain medium Yb:
YAG, Yb:The length of YAG is 40mm, doping concentration 7%；Raman crystal is BaTeMo2O9, BaTeMo2O9Length is 30mm；
First FP etalon thicks are 1mm, and the 2nd FP etalon thicks are 10mm.
Embodiment 6:
A kind of single-frequency solid Roman laser, structure is as described in Example 2, and difference lies in Raman crystal KTP, KTP
Length is 60mm.
Embodiment 7:
A kind of single-frequency solid Roman laser, structure is as described in Example 2, and difference lies in Raman crystal KTA, KTA
Length is 70mm.
Embodiment 8:
A kind of single-frequency solid Roman laser, structure is as described in Example 7, and difference lies in Raman crystal SrWO4。
Embodiment 9:
A kind of single-frequency solid Roman laser, structure is as described in Example 7, and difference lies in Raman crystal CaMoO4。
Claims (11)
1. a kind of single-frequency solid Roman laser, which is characterized in that including pumping source, coupled lens group, laser gain medium, drawing
Graceful crystal, hysteroscope M1, hysteroscope M3, hysteroscope M4, spectroscope M5 and temperature control system, pumping source exports pump light, along the pump
Direction of propagation setting coupled lens group, hysteroscope M1, laser gain medium, Raman crystal, hysteroscope M3, the first FP standards of Pu light
Tool, the 2nd FP etalons, hysteroscope M4, spectroscope M5, hysteroscope M1 and hysteroscope M3 constitute fundamental frequency optical cavity, hysteroscope M1 and hysteroscope M4
Constitute Raman optical cavity, laser gain medium, Raman crystal outside be equipped with temperature control system.
2. single-frequency solid Roman laser according to claim 1, which is characterized in that the single-frequency solid Roman laser
Further include hysteroscope M2, for hysteroscope M2 between laser gain medium and Raman crystal, it is humorous that hysteroscope M2 and hysteroscope M4 constitutes Raman light
Shake chamber.
3. single-frequency solid Roman laser according to claim 2, which is characterized in that the single-frequency solid Roman laser
Further include Q-switching device, Q-switching device is equipped with temperature control system between laser gain medium and hysteroscope M2, outside Q-switching device
System, Q-switching device are active Q-switching device or passive Q-adjusted device.
4. single-frequency solid Roman laser according to claim 3, which is characterized in that the laser gain medium adjusts Q
The anti-reflection film more than 99% to pump light, fundamental frequency light and Raman light light transmission rate is coated on two thang-kng end faces of device.
5. single-frequency solid Roman laser according to claim 1, which is characterized in that the hysteroscope M1 is coated with to pumping
Light transmission rate be more than 99%, fundamental frequency light and Raman light reaction rate are all higher than 99% deielectric-coating；The hysteroscope M2 is coated with pair
Fundamental frequency light transmission rate is more than 99% deielectric-coating more than 99% and to Raman light reaction rate；The hysteroscope M3 is coated with to fundamental frequency light
Reflectivity is more than 99% deielectric-coating more than 99% and to Raman light transmission rate；The hysteroscope M4 is coated with to fundamental frequency light transmission rate
Deielectric-coating more than 99% to Raman light transmission rate between 1%-99%；The spectroscope M5 is coated with to fundamental frequency light reflection
Rate is more than 99% deielectric-coating more than 99% and to Raman light transmission rate.
6. single-frequency solid Roman laser according to claim 1, which is characterized in that the hysteroscope M1 be average mirror or
Plano-concave mirror or planoconvex lens；The hysteroscope M2 is average mirror or plano-concave mirror or planoconvex lens.
7. single-frequency solid Roman laser according to claim 1, which is characterized in that the laser gain medium is to mix
Nd3+Crystal, glass, ceramics any one, or mix any one of the crystal of Yb, ceramics, glass；Laser gain medium
Length be 0.5mm-50mm, doping concentration 1%-10%.
8. single-frequency solid Roman laser according to claim 1, which is characterized in that the Raman crystal is wolframic acid
The length of any one of salt, nitrate, molybdate, KTP, KTA, diamond, Raman crystal is 0.5mm-100mm.
9. single-frequency solid Roman laser according to claim 1, which is characterized in that the first FP etalons,
Two FP etalons are that Raman light part penetrates, transmitance 1%-99%, thickness 0.1mm-50mm.
10. single-frequency solid Roman laser according to claim 1, which is characterized in that the pumping source is quasi-continuous pump
Pu source or continuous pumping source.
11. single-frequency solid Roman laser according to claim 1, which is characterized in that two of the Raman crystal
Thang-kng end face is coated with the anti-reflection film more than 99% to fundamental frequency light and Raman light light transmission rate.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106169696A (en) * | 2016-08-29 | 2016-11-30 | 暨南大学 | A kind of continuously tunable laser based on stimulated raman scattering |
| CN107482425A (en) * | 2017-10-16 | 2017-12-15 | 中国科学院合肥物质科学研究院 | A kind of Gao Zhongying, single longitudinal mode, narrow spaces 2.79um laser pumping source |
| CN110556695A (en) * | 2018-06-03 | 2019-12-10 | 中国科学院大连化学物理研究所 | 2.8 micron wave band wavelength tunable laser |
| CN109842014B (en) * | 2019-03-13 | 2021-03-30 | 山东大学 | Single-frequency pulse Raman laser with compact structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103779766A (en) * | 2014-01-03 | 2014-05-07 | 中国科学院上海光学精密机械研究所 | Single frequency solid-state raman laser |
| CN104158084A (en) * | 2014-09-10 | 2014-11-19 | 哈尔滨工业大学 | Single-doped Ho:YAG single longitudinal mode laser transmitting device on basis of F-P (Fabry-Perot) etalon |
| CN204179482U (en) * | 2014-10-28 | 2015-02-25 | 长春新产业光电技术有限公司 | N-type cavity high power single-frequency ultraviolet laser |
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| WO2002021646A1 (en) * | 2000-09-05 | 2002-03-14 | Lumenis Inc. | Frequency doubled nd: yag laser with yellow light output |
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| CN103779766A (en) * | 2014-01-03 | 2014-05-07 | 中国科学院上海光学精密机械研究所 | Single frequency solid-state raman laser |
| CN104158084A (en) * | 2014-09-10 | 2014-11-19 | 哈尔滨工业大学 | Single-doped Ho:YAG single longitudinal mode laser transmitting device on basis of F-P (Fabry-Perot) etalon |
| CN204179482U (en) * | 2014-10-28 | 2015-02-25 | 长春新产业光电技术有限公司 | N-type cavity high power single-frequency ultraviolet laser |
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