CN201149950Y - Solid yellow light laser - Google Patents
Solid yellow light laser Download PDFInfo
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- CN201149950Y CN201149950Y CNU2007200295535U CN200720029553U CN201149950Y CN 201149950 Y CN201149950 Y CN 201149950Y CN U2007200295535 U CNU2007200295535 U CN U2007200295535U CN 200720029553 U CN200720029553 U CN 200720029553U CN 201149950 Y CN201149950 Y CN 201149950Y
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Abstract
The utility model relates to a solid yellow laser, which belongs to the solid laser field. The solid yellow laser comprises a laser diode LD end face pumping source, an optical fiber, a coupling lens, a resonant cavity, a Neodymium Doped. Yttrium Aluminum Garnet Nd:YAG crystal, an acousto-optic adjustment Q device, a Gadolinium vanadate GdVO4 crystal and a potassium titanyl phosphate KTP crystal, wherein, the resonant cavity is composed of a back cavity speculum and an output speculum, the front end adopts the back cavity speculum, the rear end adopts the an output speculum; the Neodymium Doped. Yttrium Aluminum Garnet Nd:YAG crystal, theuioousto-optic adjustment Q device, the Gadolinium vanadate GdVO4 crystal and the potassium titanyl phosphate KTP crystal are put in the resonant cavity in sequence; a loop cooling device is used for cooling down the outer part of the crystals. The solid yellow laser has the advantages that the volume is small, the performance is stable, the power is high, the cost is low, and the solid yellow laser has wide practicability.
Description
(1) technical field
The utility model relates to a kind of solid state laser, particularly a kind of solid Yellow light laser.
(2) background technology
At present external relevant for the report of solid Yellow light laser, they mainly adopt dual mode to realize: the one, with two-beam and frequency (Intracavity sum-frequency generation of 3.23W continuous-wave yellow light in anNd:YAG laser, " Optics Communications ", Vol.255,2005,248-252), the 2nd, in the chamber, use frequency doubling technology (Efficient all-solid-state yellow laser source producing 1.2-W average power, " Optics Letters ", Vol.24,1999,1490-1492).Compare with the method for intracavity frequency doubling and method frequently to have a volume big, power is low, conversion efficiency is poor, structural instability is difficult to shortcomings such as realization.And mostly present intracavity frequency doubling is to adopt three lithium borate monocrystalline (LBO) to do frequency-doubling crystal, but lithium triborate crystal LBO has easy deliquescence, the price height, non linear coefficient is little, and the phase matched temperature influence is bigger, needs to keep harsh conditions restrictions such as temperature constant, and is wayward.
(3) summary of the invention
For overcoming the defective of prior art, little with the realization volume, the power height, the big and constitutionally stable Yellow light laser of conversion efficiency, the utility model provides a kind of solid Yellow light laser.
A kind of solid Yellow light laser comprises laser diode LD end pumping source, optical fiber, coupled lens, resonant cavity, neodymium-doped yttrium-aluminum garnet Nd:YAG crystal, acousto-optic Q modulation device, vanadic acid gadolinium GdVO
4Crystal and KTP ktp crystal; The pump light that is sent by LD end pumping source enters in the resonant cavity through optical fiber and coupled lens, it is characterized in that resonant cavity is made up of Effect of Back-Cavity Mirror and outgoing mirror, front end is an Effect of Back-Cavity Mirror, the rear end is an outgoing mirror, places neodymium-doped yttrium-aluminum garnet Nd:YAG crystal, acousto-optic Q modulation device, vanadic acid gadolinium GdVO in the resonant cavity successively
4Crystal and KTP ktp crystal; Above-mentioned crystal outside all surrounds with the metal derby that has open-work and pipeline, and crystal places in the open-work of metal derby, and the pipeline in the metal derby continues to be connected with recirculated cooling water, is used for reducing temperature to crystal.
Described laser diode LD end pumping source is 808nm LD end pumping source.
It is the anti-reflection film of light of 1000nm-1200nm that two end faces of described neodymium-doped yttrium-aluminum garnet Nd:YAG crystal all are coated with wavelength, and neodymium-doped yttrium-aluminum garnet Nd:YAG crystal produces fundamental frequency light as laser medium.
Described acousto-optic Q modulation device is made up of radio frequency input unit and adjusting Q crystal, and it is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface of adjusting Q crystal all are coated with wavelength; The rf wave modulating frequency is 8-30KHz, by the density of input radio frequency ripple change adjusting Q crystal, sexually revises the purpose of laserresonator threshold value performance period, plays the Q-switch effect.
Described vanadic acid gadolinium GdVO
4It is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface of crystal all are coated with wavelength, vanadic acid gadolinium GdVO
4Crystal is Raman light as the Raman medium with the fundamental frequency phototransformation.
It is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface of described KTP ktp crystal all are coated with wavelength, and the KTP ktp crystal is converted into gold-tinted as frequency-doubling crystal with Raman light.
Described Effect of Back-Cavity Mirror is coated with wavelength is the anti-reflection film of the pump light of 808nm and is the high anti-film of light of 1000nm-1200nm to wavelength.
It is the high anti-film of light of 1000nm-1200nm that described outgoing mirror is coated with wavelength, this film and be that the light of 587nm is high saturating to wavelength.
The doping content of described neodymium-doped yttrium-aluminum garnet Nd:YAG fundamental crystal is 0.6%-1.5%.
The curvature of Effect of Back-Cavity Mirror and outgoing mirror can be selected according to actual conditions.Laser crystal Nd:YAG, Raman crystal GdVO
4, it is the anti-reflection film of light of 1000nm-1200nm that frequency-doubling crystal KTP and acousto-optic Q modulation crystal all are coated with wavelength.The doping content of fundamental crystal Nd:YAG is 0.6%-1.5%, because the stimulated emission cross section of Nd:YAG is bigger, is a kind of good laser medium, so we adopt Nd:YAG as laser medium in laser.Raman crystal GdVO
4The a axle cutting (the crystal stimulated emission cross section is parallel to the c axle) or the c axle cutting (the crystal stimulated emission cross section is parallel to a axle) that can define along physics as required, GdVO
4Crystal is a kind of good Raman medium, and has bigger thermal conductivity, very is suitable for needs of the present utility model.Ktp crystal need consider according to circumstances that the phase matched angle cuts, and can effectively improve the performance of laser like this.The length of all crystals in the utility model all can be chosen according to specific requirement; The face area of crystal can be determined according to the area of beam cross section.
Because Raman effect is the nonlinear effect on three rank, need fundamental frequency light to have higher peak power, so we use Q-modulating device in laser, can improve the peak power of fundamental frequency light so greatly, thereby improve the conversion efficiency of fundamental frequency light to Raman light, significantly increase the power output of yellow laser, effectively raised the performance of this laser.
The workflow of laser is as follows: the wavelength that send in LD end pumping source is that the pump light of 808nm enters the Nd:YAG laser crystal through optical fiber and coupled lens, and when the Q-switch of acousto-optic Q modulation device was closed, pump light transferred the counter-rotating particle to and stores; When Q switching was opened, a large amount of counter-rotating particle moment of saving bit by bit transferred fundamental frequency light to by stimulated radiation; Fundamental frequency light with high peak power is through GdVO
4Raman crystal is because the effect of stimulated Raman scattering transfers Raman light to; Raman light transfers gold-tinted at KTP frequency-doubling crystal place to through frequency-doubled effect at last, and is exported by outgoing mirror.
The utility model proposes a kind of new compound mode, use laser diode LD end pumping source, neodymium-doped yttrium-aluminum garnet Nd:YAG fundamental crystal, vanadic acid gadolinium monocrystalline GdVO
4Raman crystal, the KTP frequency-doubling crystal adopts the mode of intracavity frequency doubling Raman light to produce yellow laser, has successfully solved the various shortcomings of above-mentioned laser, a kind of new total solids high power Yellow light laser is provided, the volume of the utility model laser head is about 10cm*10cm*20cm, and little with the volume of comparing in the background technology, cost is low, the efficient height, light conversion efficiency can reach 7%, and the power output of gold-tinted can reach 600mW, and stable performance.
(4) description of drawings
Fig. 1 is the utility model laser light path structural representation.
Wherein: 1.LD end pumping source, 2. optical fiber, 3. coupled lens, 4. Effect of Back-Cavity Mirror, 5. neodymium-doped yttrium-aluminum garnet crystal, 6. acousto-optic Q modulation device, 7. vanadic acid gadolinium crystal, 8.KTP crystal, 9. outgoing mirror.
(5) embodiment
Embodiment 1:
The utility model device comprises laser diode LD end pumping source 1, optical fiber 2, coupled lens 3, resonant cavity, neodymium-doped yttrium-aluminum garnet Nd:YAG crystal 5, acousto-optic Q modulation device 6, vanadic acid gadolinium GdVO as shown in Figure 1
4 Crystal 7 and KTP ktp crystal 8; The pump light that is sent by LD end pumping source 1 enters in the resonant cavity through optical fiber 2 and coupled lens 3, it is characterized in that resonant cavity is made up of Effect of Back-Cavity Mirror 4 and outgoing mirror 9, front end is an Effect of Back-Cavity Mirror 4, the rear end is an outgoing mirror 9, places neodymium-doped yttrium-aluminum garnet Nd:YAG crystal 5, acousto-optic Q modulation device 6, vanadic acid gadolinium GdVO in the resonant cavity successively
4Crystal 7 and KTP ktp crystal 8; Above-mentioned crystal outside all surrounds with the metal derby that has open-work and pipeline, and crystal places in the open-work of metal derby, and the pipeline in the metal derby continues to be connected with recirculated cooling water, is used for reducing temperature to crystal.
Described laser diode LD end pumping source 1 is 808nm LD end pumping source.
It is the anti-reflection film of light of 1000nm-1200nm that two end faces of described neodymium-doped yttrium-aluminum garnet Nd:YAG crystal 5 all are coated with wavelength, and neodymium-doped yttrium-aluminum garnet Nd:YAG crystal 5 produces fundamental frequency light as laser medium.
Described acousto-optic Q modulation device 6 is made up of radio frequency input unit and adjusting Q crystal, and it is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface of adjusting Q crystal all are coated with wavelength; The rf wave modulating frequency is 10KHz, by the density of input radio frequency ripple change adjusting Q crystal, sexually revises the purpose of laserresonator threshold value performance period, plays the Q-switch effect.
Described vanadic acid gadolinium GdVO
4It is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface of crystal 7 all are coated with wavelength, vanadic acid gadolinium GdVO
4Crystal is Raman light as the Raman medium with the fundamental frequency phototransformation.
It is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface of described KTP ktp crystal 8 all are coated with wavelength, and KTP ktp crystal 8 is converted into gold-tinted as frequency-doubling crystal with Raman light.
The radius of curvature of described Effect of Back-Cavity Mirror 4 is 3000mm, is coated with wavelength is the anti-reflection film of the pump light of 808nm and is the high anti-film of light of 1000nm-1200nm to wavelength.
It is the high anti-film of light of 1000nm-1200nm that described outgoing mirror 9 is coated with wavelength, and this film is that the light of 587nm has high transmissivity to wavelength.
The doping content of described neodymium-doped yttrium-aluminum garnet Nd:YAG fundamental crystal 5 is 0.8%.
The workflow of laser: the pump light that 808nm is sent in LD end pumping source 1 enters neodymium-doped yttrium-aluminum garnet Nd:YAG crystal 5 through optical fiber 2 and coupled lens 3, and when the Q-switch of acousto-optic Q modulation device 6 was closed, pump light transferred the counter-rotating particle to and stores; When Q opens the light when opening, a large amount of counter-rotating particles of saving bit by bit transfer 1064.2nm fundamental frequency light to by stimulated radiation moment; Fundamental frequency light with high peak power is through pervanadic acid gadolinium GdVO
4Crystal 7 is because the effect of stimulated Raman scattering transfers the 1174.5nm Raman light to; Raman light transfers the 587.5nm gold-tinted at KTP frequency-doubling crystal 8 places to through frequency-doubled effect at last, and by outgoing mirror 9 outputs.
Embodiment 2:
Identical with embodiment 1, the rf wave modulating frequency that is described acousto-optic Q modulation device 6 is 15KHz; The radius of curvature of described Effect of Back-Cavity Mirror 4 is 1000mm; The doping content of described neodymium-doped yttrium-aluminum garnet Nd:YAG fundamental crystal 5 is 1%.
The workflow of laser: the pump light that 808nm is sent in LD end pumping source 1 enters neodymium-doped yttrium-aluminum garnet Nd:YAG crystal 5 through optical fiber 2 and coupled lens 3, and when the Q-switch of acousto-optic Q modulation device 6 was closed, pump light transferred the counter-rotating particle to and stores; When Q opens the light when opening, a large amount of counter-rotating particles of saving bit by bit transfer 1064.2nm fundamental frequency light to by stimulated radiation moment; Fundamental frequency light with high peak power is through pervanadic acid gadolinium GdVO
4Crystal 7 is because the effect of stimulated Raman scattering transfers the 1174.5nm Raman light to; Raman light transfers the 587.5nm gold-tinted at KTP frequency-doubling crystal 8 places to through frequency-doubled effect at last, and by outgoing mirror 9 outputs.
Embodiment 3:
Identical with embodiment 1, the rf wave modulating frequency that is described acousto-optic Q modulation device 6 is 25KHz; The radius of curvature of described Effect of Back-Cavity Mirror 4 is 1000mm; The doping content of neodymium-doped yttrium-aluminum garnet Nd:YAG fundamental crystal 5 is 1.2%.
The workflow of laser: the pump light that 808nm is sent in LD end pumping source 1 enters neodymium-doped yttrium-aluminum garnet Nd:YAG crystal 5 through optical fiber 2 and coupled lens 3, and when the Q-switch of acousto-optic Q modulation device 6 was closed, pump light transferred the counter-rotating particle to and stores; When Q opens the light when opening, a large amount of counter-rotating particles of saving bit by bit transfer 1064.2nm fundamental frequency light to by stimulated radiation moment; Fundamental frequency light with high peak power is through pervanadic acid gadolinium GdVO
4Crystal 7 is because the effect of stimulated Raman scattering transfers the 1174.5nm Raman light to; Raman light transfers the 587.5nm gold-tinted at KTP frequency-doubling crystal 8 places to through frequency-doubled effect at last, and by outgoing mirror 9 outputs.
The core diameter of the coupled fiber 2 among above-mentioned three embodiment is 400 μ m, and numerical aperture is 0.22, and maximum power output is 32W.Outgoing mirror 9 is flat mirror.And all crystals all passes through water-cooled cooling.
Claims (8)
1. a solid Yellow light laser comprises laser diode LD end pumping source, optical fiber, coupled lens, resonant cavity, neodymium-doped yttrium-aluminum garnet Nd:YAG crystal, acousto-optic Q modulation device, vanadic acid gadolinium GdVO
4Crystal and KTP ktp crystal; The pump light that is sent by LD end pumping source enters in the resonant cavity through optical fiber and coupled lens, it is characterized in that resonant cavity is made up of Effect of Back-Cavity Mirror and outgoing mirror, front end is an Effect of Back-Cavity Mirror, the rear end is an outgoing mirror, places neodymium-doped yttrium-aluminum garnet Nd:YAG crystal, acousto-optic Q modulation device, vanadic acid gadolinium GdVO in the resonant cavity successively
4Crystal and KTP ktp crystal; Above-mentioned crystal outside all surrounds with the metal derby that has open-work and pipeline, and crystal places in the open-work of metal derby, and the pipeline in the metal derby continues to be connected with recirculated cooling water, is used for reducing temperature to crystal.
2. a kind of solid Yellow light laser as claimed in claim 1 is characterized in that described laser diode LD end pumping source is 808nm LD end pumping source.
3. a kind of solid Yellow light laser as claimed in claim 1 is characterized in that described mixing
It is the anti-reflection film of light of 1000nm-1200nm that two end faces of neodymium yttrium aluminium garnet Nd:YAG crystal all are coated with wavelength, and neodymium-doped yttrium-aluminum garnet Nd:YAG crystal produces fundamental frequency light as laser medium.
4. a kind of solid Yellow light laser as claimed in claim 1 is characterized in that described acousto-optic Q modulation device is made up of radio frequency input unit and adjusting Q crystal, and it is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface of adjusting Q crystal all are coated with wavelength; The rf wave modulating frequency is 8-30KHz, by the density of input radio frequency ripple change adjusting Q crystal, sexually revises the purpose of laserresonator threshold value performance period, plays the Q-switch effect.
5. a kind of solid Yellow light laser as claimed in claim 1 is characterized in that described vanadic acid gadolinium GdVO
4It is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface of crystal all are coated with wavelength, vanadic acid gadolinium GdVO
4Crystal is Raman light as the Raman medium with the fundamental frequency phototransformation.
6. a kind of solid Yellow light laser as claimed in claim 1, it is the anti-reflection film of light of 1000nm-1200nm that the both ends of the surface that it is characterized in that described KTP ktp crystal all are coated with wavelength, the KTP ktp crystal is used as frequency-doubling crystal, and Raman light is converted into gold-tinted.
7. a kind of solid Yellow light laser as claimed in claim 1 is characterized in that described Effect of Back-Cavity Mirror is coated with wavelength is the anti-reflection film of the pump light of 808nm and is the high anti-film of light of 1000nm-1200nm to wavelength.
8. a kind of solid Yellow light laser as claimed in claim 1 is characterized in that it is the high anti-film of light of 1000nm-1200nm that described outgoing mirror is coated with wavelength, this film and be that the light of 587nm is high saturating to wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200295535U CN201149950Y (en) | 2007-11-06 | 2007-11-06 | Solid yellow light laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200295535U CN201149950Y (en) | 2007-11-06 | 2007-11-06 | Solid yellow light laser |
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| CN201149950Y true CN201149950Y (en) | 2008-11-12 |
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| CNU2007200295535U Expired - Fee Related CN201149950Y (en) | 2007-11-06 | 2007-11-06 | Solid yellow light laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235373A (en) * | 2013-03-29 | 2013-08-07 | 西安电子科技大学 | Coupling and outputting method implemented by diode-pumped solid-state laser device and optical fiber |
-
2007
- 2007-11-06 CN CNU2007200295535U patent/CN201149950Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235373A (en) * | 2013-03-29 | 2013-08-07 | 西安电子科技大学 | Coupling and outputting method implemented by diode-pumped solid-state laser device and optical fiber |
| CN103235373B (en) * | 2013-03-29 | 2015-10-14 | 西安电子科技大学 | A kind of laser diode pump solid state laser device coupling fiber output intent |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20091207 |