CN101345389B - Full-solid state five-wavelength simultaneously outputting laser device and 5-wavelength laser generation method - Google Patents
Full-solid state five-wavelength simultaneously outputting laser device and 5-wavelength laser generation method Download PDFInfo
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Abstract
The invention discloses a laser facility of all-solid-state five-wavelength lasers simultaneous output and a laser production method. The five-wavelength lasers, that is, infrared of 1.3 mum wavelength, infrared of 1.0 mum wavelength, green light of 0.5 mum wavelength, yellow light of 0.5 mum wavelength and red light of 0.6 mum wavelength, are simultaneously output using a Nd<3+>-doped laser crystal as working substance and a composite resonator of + shape by combining nonlinear optics frequency translation technology with acousto-optically Q-switched technology as well as controlling the polarization direction of fundamental frequency lasers with different wavelengths by a polarization beam splitter. The fundamental frequency lasers with different wavelengths and polarization directions respectively form oscillation in each relatively independent resonant cavity and each beam of light can be adjusted independently. The laser facility has advantages of multiple wavelengths, high efficiency, compact structure, low running cost, convenient and flexible adjustment and safe work, and is widely used in the field of laser medicine, laser color display, laser entertainment, astronomy, national defense and scientific research.
Description
Technical field
The present invention relates to a kind of laser, particularly laser aid and five wavelength laser generation methods exported simultaneously of all solid state five wavelength of profile pump power 1.3 micron waveband scope infrared lights, 1.0 micron waveband scope infrared lights, 0.5 micron waveband scope green glow, 0.5 micron waveband scope gold-tinted and 0.6 micron waveband scope ruddiness.
Background technology
Since nineteen sixty, first ruby laser was born in the world, all kinds of lasers and laser technology development were very rapid.Wherein, the development of multiple-wavelength laser gets most of the attention, because it has overcome the defective of conventional laser output single wavelength, can be according to actual needs in different application the artificial a certain wavelength laser of selection, application also can combine multiwavelength laser, for example, at medical domain, single wavelength high power 532nm green laser can be used for the treatment of hyperblastosis, and utilizing wavelength is that two pulse lasers of green laser (account for gross energy 20%) of 532nm can be formed U100 laser lithotripsy system for the infrared laser of 1064nm (account for gross energy 80%) and wavelength; In astronomy, utilize 589nm gold-tinted laser can form the laser aiming star; In the laser display field, the red, green, blue tricolor laser can be used for high-resolution laser TV system.Therefore multiple-wavelength laser all has a wide range of applications in numerous areas, and market application foreground is very considerable, has become popular research topic both domestic and external.
At present, both at home and abroad all relevant for the relevant report of multiwavelength laser.But mostly be dual wavelength or three-wavelength laser system.Reported 1319/660nm dual laser (Wang Tao as University Of Tianjin in 2004, Yao Jianquan, " Nd:YAG laser multi-wavelength export technique and application study ", Hebei University of Technology's journal, 33 (2004): 1-6) realize dual-wavelength laser while or alternately output by replacing different outgoing mirrors, this scheme is complicated operation not only, and all can influence the quality and the performance of outgoing laser beam during each conversion in various degree.For three-wavelength laser, (US.Patent 5740190) produce the fundamental frequency light of 1047nm single wavelength with a Nd:YLF laser in the world, by producing the 523nm frequency doubled light behind the frequency-doubling crystal, this green glow is by behind the optical parametric oscillator, export the green glow of idle light of 896nm flashlight and 1256nm and 523nm simultaneously, flashlight is exported 448nm blue light and 628nm ruddiness respectively through behind the frequency-doubling crystal respectively with idle light, thereby finishes the output of red, green, blue tricolor laser.But the production process of such tricolor laser is comparatively complicated, and cost is also higher.In addition, also a small amount of report about four wavelength lasers, Nanjing University utilize 1.3 microns of the emission of same crystal with 1.0 micron waveband scopes in fundamental frequency light pass through one aperiodic optical superlattice, realized that red, yellow, blue, green four wavelength lasers export simultaneously, but this chamber type is had relatively high expectations to the plated film of chamber mirror, it is lower to export laser power simultaneously, and the price of optical superlattice is comparatively expensive, is unfavorable for the industrialization of multiwavelength laser.There is complicated operation in above-mentioned various multiple-wavelength laser, and cost height, wavelength are few, the defective that power is lower.
Summary of the invention
Purpose of the present invention provides that a kind of wavelength is many, efficient is high, compact conformation, operating cost is low, adjusting is flexible, work safety, the laser aid that high-power all solid state five wavelength of profile pump are exported simultaneously.Another object of the present invention provides the multiwavelength laser production method.
In order to overcome the deficiencies in the prior art, technical scheme of the present invention is to solve like this: the laser aid that all solid state five wavelength are exported simultaneously, comprise plano-concave total reflection end mirror, of the present inventionly be that the horizontal optical path of incident plano-concave total reflection end mirror is equipped with the first acousto-optic Q modulation crystal, the first doping Nd successively outside special
3+Laser crystal and LD side first pumping source, polarizing beam splitter mirror, the first second harmonic speculum and crystal, first plane output end mirror, Amici prism frequently; The top of the polarizing beam splitter mirror on another non-horizontal optical path is equipped with the 3rd plane output end mirror, second frequency-doubling crystal, the second second harmonic speculum, the second acousto-optic adjusting Q crystal, the second doping Nd successively
3+Laser crystal and side second pumping source thereof; The below of polarizing beam splitter mirror is equipped with first frequency-doubling crystal, second plane output end mirror successively.
Five wavelength laser generation methods of laser aid, undertaken by following step successively:
1), the first doping Nd
3+The laser crystal and the second doping Nd
3+Laser crystal absorb the energy of LD side first pumping source and the side second pumping source radiation respectively after, form inverted population and distribute Nd
3+Respectively at energy level
4F
3/2-
4I
11/2With
4F
3/2-
4I
13/2Between transition, produce the excited fluorescence radiation of 1.0 microns and 1.3 micron waveband scopes, the vibration in corresponding laser resonant cavity separately of the fluorescence of radiation is amplified the back and is formed stable fundamental frequency light, wherein the fundamental frequency light of 1.0 micron waveband scopes is through the polarizing beam splitter mirror beam splitting, and the mutually perpendicular laser in two polarization directions is exported in the straight chamber of being made up of plano-concave total reflection end mirror, first plane output end mirror with by plano-concave total reflection end mirror, polarizing beam splitter mirror beam splitting, second plane respectively in the refrative cavity that end mirror forms and formed vibration;
2), the first doping Nd
3+The fundamental frequency light of 1.0 micron waveband scopes of laser crystal emission by the reflection of plano-concave total reflection end mirror, through the first acousto-optic Q modulation crystal, the first doping Nd
3+Laser crystal incide polarizing beam splitter mirror, polarizing beam splitter mirror is divided into two light paths, wherein a light path is that ' s ' polarization fundamental frequency light is through the first frequency-doubling crystal frequency multiplication, the frequency multiplication green glow that produces and ' s ' polarization fundamental frequency light of unconverted together arrive second plane output end mirror, through reflection, ' s ' polarization fundamental frequency light is once more by after the first frequency-doubling crystal frequency multiplication, residue ' s ' polarization fundamental frequency light returns plano-concave total reflection end mirror along former road, the green glow of twice frequency multiplication generation is together through second plane output end mirror coupling output; Another light path is that ' p ' polarization fundamental frequency light incides and the frequency crystal through the first second harmonic speculum, with ' s ' polarization fundamental frequency light of 1.3 micron waveband scopes through and frequently crystal and frequently back ' p ' polarization fundamental frequency light with 1.0 micron wavebands frequency gold-tinted and part unconverted that produce export by the coupling of first plane output end mirror, and by the Amici prism beam split, ' p ' polarization fundamental frequency light of another part unconverted by the first plane output mirroring after former road return plano-concave total reflection end mirror, through and frequently produce again with ' s ' polarization fundamental frequency optical coupling of 1.3 micron waveband scopes during crystal and gold-tinted frequently, generation with the frequency gold-tinted by the first second harmonic mirror reflects after through exporting by the coupling of first plane output end mirror once more with the frequency crystal;
3), the second doping Nd
3+The fundamental frequency light of 1.3 micron waveband scopes of laser crystal emission upwards through the second acousto-optic adjusting Q crystal, the second second harmonic speculum incides second frequency-doubling crystal, through the second frequency-doubling crystal frequency multiplication, produce second-harmonic red laser by the 3rd plane output end mirror coupling output, the fundamental frequency light of unconverted is by the 3rd plane output mirroring, once more through the second frequency-doubling crystal frequency multiplication, frequency doubled light is together exported end mirror coupling output by the second second harmonic mirror reflects and the frequency doubled light that produces for the first time through the 3rd plane, remain 1.3 microns fundamental frequency light through the second second harmonic speculum, the second acousto-optic adjusting Q crystal, the second doping Nd
3+Laser crystal incide on the polarizing beam splitter mirror, incide and the frequency crystal through the second harmonic speculum by 1.3 micron waveband scope ' s ' polarization fundamental frequency light after the polarization beam splitting mirroring, ' p ' polarization fundamental frequency light warp and frequency crystal and frequency with another 1.0 micron waveband scope, that produce and 1.3 microns ' s ' polarization fundamental frequency light frequency gold-tinted and part unconverted and 1.0 microns ' p ' polarizations are by first plane output end mirror coupling output, and by the Amici prism beam split, 1.3 microns ' s ' polarization fundamental frequency light of another part unconverted by the first plane output mirroring after former road return the 3rd plane output end mirror, pass through once more and frequently produce again with 1.0 microns ' p ' polarization fundamental frequency light during crystal and gold-tinted frequently, generation with the frequency gold-tinted by the first second harmonic mirror reflects after through exporting the end mirror output that is coupled once more by first plane with the frequency crystal.
The present invention compared with prior art, have that wavelength is many, efficient is high, compact conformation, operating cost is low, adjusting is flexible, work safety, profile pump high power five wavelength lasers are exported the laser of laser simultaneously, adopt " cross " Compound Cavity structure of compact conformation, realize the characteristics that 1.3 micron waveband scope infrared lights, 1.0 micron waveband scope infrared lights, 0.5 micron waveband scope green glow, 0.5 micron waveband scope gold-tinted light and 0.6 micron waveband scope ruddiness, five wavelength lasers are exported simultaneously, can satisfy the needs in different field and market simultaneously.The use of polarizing beam splitter mirror, both realized different frequency fundamental frequency polarization state of light control in the resonant cavity, simultaneously be coupled to same and frequently in the crystal with two wavelength differences, basic frequency beam that polarization state is different are coaxial again, played the effect of polarizer and coupler simultaneously, avoided inserting in the chamber other optics and caused fundamental frequency light because of inserting the power output that loss reduces whole laser system.The fundamental frequency light of different wave length different polarization direction is vibrating respectively in the corresponding resonant cavity separately, each road light can independently be regulated, make operation more convenient flexibly, be widely used in fields such as laser medicine, laser color demonstration, laser amusement, astronomy, national defence and scientific research.
Description of drawings
Fig. 1 is the structural representation of laser of the present invention.
Embodiment
Accompanying drawing is embodiments of the invention.
Below in conjunction with accompanying drawing content of the present invention is described in further detail:
With reference to shown in Figure 1, the laser aid that all solid state five wavelength are exported simultaneously comprises plano-concave total reflection end mirror 1, and the horizontal optical path of incident plano-concave total reflection end mirror 1 is equipped with the first acousto-optic Q modulation crystal 2, the first doping Nd successively
3+ Laser crystal 3 and LD side first pumping source 4, polarizing beam splitter mirror 5, the first second harmonic speculum 6 and crystal 7, first plane output end mirror 8, Amici prism 9 frequently; The top of the polarizing beam splitter mirror 5 of another non-horizontal optical path is equipped with the 3rd plane output end mirror 17, second frequency-doubling crystal 16, the second second harmonic speculum 15, the second acousto-optic adjusting Q crystal 14, the second doping Nd successively
3+ Laser crystal 12 and side second pumping source 13 thereof; The below of polarizing beam splitter mirror 5 is equipped with first frequency-doubling crystal 11, second plane output end mirror 10 successively.
Described polarizing beam splitter mirror 5 is towards the first doping Nd
3+The one side of laser crystal 3 be coated with the Double-color film of the anti-reflection height of ' s ' polarization anti-(reflectivity R＞99.8%) of ' p ' polarizations anti-reflection (transmitance T＞99.8%) of 1.0 micron waveband scopes and 1.0 micron waveband scopes, towards the second doping Nd
3+The one side (top) of laser crystal 12 also to be coated with the Double-color film of the anti-reflection high-reflecting film of ' s ' polarization (reflectivity R＞99.8%) of ' p ' polarizations anti-reflection (transmitance T＞99.8%) of 1.0 micron waveband scopes and 1.3 micron waveband scopes, its angle of inclination and horizontal forward angle are 130 °～140 °
Described horizontal optical path becomes 130 °～140 ° and 50 °～40 ° angles respectively with polarizing beam splitter mirror 5 respectively with another non-horizontal optical path, with 1.3 microns ' s ' polarised light light guaranteeing vertical optical path through after polarizing beam splitter mirror 5 reflections with horizontal optical path on 1.0 microns ' p ' polarised lights are coaxial is coupled to and crystal 7 frequently, make two basic frequency beams have maximum space to overlap and high and frequency conversion efficiency.
Described plano-concave total reflection end mirror 1 one side towards the first acousto-optic Q modulation crystal 2 is coated with 1.0 micron waveband fundamental frequency light and is all-trans the film reflectivity greater than 99.9%; The part that output end mirror 8 in first plane is coated with 1.0 and 1.3 micron waveband scope fundamental frequency light towards the one side with frequency crystal 7 see through the film transmitance be respectively 3% and 2% and 0.5 micron waveband scope and frequently the anti-reflection film transmitance of light greater than 99.9%, another side be coated with 1.0 and 1.3 micron waveband scope fundamental frequency light and 0.5 micron waveband scope and frequently the anti-reflection film of light cross rate greater than 99.8%; The two sides of second plane output end mirror 10 all is coated with the anti-reflection film transmitance of 0.5 micron waveband scope frequency multiplication green glow greater than 99.8%), wherein the one side towards first frequency-doubling crystal 11 also is coated with the high-reflecting film reflectivity of 1.0 micron waveband scope fundamental frequency light greater than 99.8%; The anti-reflection film transmitance that the two sides of the 3rd plane output end mirror 17 all is coated with 0.6 micron waveband scope second-harmonic red laser is greater than 99.8%, and wherein the one side towards second frequency-doubling crystal 16 also is coated with the high-reflecting film reflectivity of 1.3 micron waveband scope fundamental frequency light greater than 99.8%.
It is 800mm～1200mm that the radius of curvature of described plano-concave total reflection end mirror 1 is chosen scope.
The crystal of described first frequency-doubling crystal 11, second frequency-doubling crystal 16 and frequency crystal 7 is two or three same a kind of, the different crystal in three lithium borate LBO, beta-barium metaborate BBO, potassium titanium oxide phosphate KTP or other nonlinear optical crystal.
The described first doping Nd
3+The laser crystal 3 and the second doping Nd
3+Laser crystal 12 be neodymium-doped yttrium-aluminum garnet Nd
3+: YAG, Nd-doped yttrium vanadate Nd
3+: YVO
4, neodymium-doped yttrium aluminate Nd
3+: YAP, neodymium-doped yttrium-fluoride lithium Nd
3+: the same a kind of or different two kinds of crystal in the YLF Lasers crystal.
The described first acousto-optic Q modulation crystal 2 and the second acousto-optic adjusting Q crystal 14 are controlled by same drive source, are positioned over the first doping Nd respectively
3+The left side and the second doping Nd of laser crystal 3
3+The top of laser crystal 12.
The two sides of the described first second harmonic speculum 6 all is coated with the anti-reflection film transmitance of 1.0 and 1.3 micron waveband scope fundamental frequency light greater than 99.9%, wherein also is coated with the high-reflecting film reflectivity of 0.5 micron waveband scope and frequency gold-tinted greater than 99.8% towards the one side with frequency crystal 7; The two sides of the second second harmonic speculum 15 all is coated with the anti-reflection film transmitance of 1.3 micron waveband scope fundamental frequency light greater than 99.9%, and wherein the one side towards second frequency-doubling crystal 16 also is coated with the high-reflecting film reflectivity of 0.6 micron waveband scope second-harmonic red laser greater than 99.8%.
Five wavelength laser generation methods of laser aid, undertaken by following step successively:
1), the first doping Nd
3+The laser crystal 3 and the second doping Nd
3+Laser crystal 12 absorb the energy of LD side first pumping source 4 and side second pumping source, 13 radiation respectively after, form inverted population and distribute Nd
3+Respectively at energy level
4F
3/2-
4I
11/2With
4F
3/2-
4I
13/2Between transition, produce the excited fluorescence radiation of 1.0 microns and 1.3 micron waveband scopes, the vibration in corresponding laser resonant cavity separately of the fluorescence of radiation is amplified the back and is formed stable fundamental frequency light, wherein the fundamental frequency light of 1.0 micron waveband scopes is through polarizing beam splitter mirror 5 beam splitting, and the mutually perpendicular laser in two polarization directions is exported in the straight chamber of being made up of plano-concave total reflection end mirror 1, first plane output end mirror 8 with by plano-concave total reflection end mirror 1, polarizing beam splitter mirror 5 beam splitting, second plane respectively in the refrative cavity that end mirror 10 forms and formed vibration.
2), the first doping Nd
3+The fundamental frequency light of 1.0 micron waveband scopes of laser crystal 3 emission by 1 reflection of plano-concave total reflection end mirror, through the first acousto-optic Q modulation crystal 2, the first doping Nd
3+Laser crystal 3 incide polarizing beam splitter mirror 5, polarizing beam splitter mirror 5 is divided into two light paths, wherein a light path is that ' s ' polarization fundamental frequency light is through first frequency-doubling crystal, 11 frequencys multiplication, the frequency multiplication green glow that produces and ' s ' polarization fundamental frequency light of unconverted together arrive second plane output end mirror 10, through reflection, ' s ' polarization fundamental frequency light is once more by after first frequency-doubling crystal, 11 frequencys multiplication, residue ' s ' polarization fundamental frequency light returns the green glow of plano-concave total reflection end mirror 1, twice frequency multiplication generation together through the 10 coupling outputs of second plane output end mirror along former road; Another light path is that ' p ' polarization fundamental frequency light incides and frequency crystal 7 through the first second harmonic speculum 6, with ' s ' polarization fundamental frequency light of 1.3 micron waveband scopes through and frequently crystal 7 and frequently back ' p ' polarization fundamental frequency light with 1.0 micron wavebands frequency gold-tinted and part unconverted that produce export by 8 couplings of first plane output end mirror, and by Amici prism 9 beam split, ' p ' polarization fundamental frequency light of another part unconverted returns plano-concave total reflection end mirror 1 by former road, first plane output end mirror, 8 reflection backs, through and frequently produce again with ' s ' polarization fundamental frequency optical coupling of 1.3 micron waveband scopes during crystal 7 and gold-tinted frequently, generation with the frequency gold-tinted by 6 reflections of the first second harmonic speculum after through exporting by 8 couplings of first plane output end mirror once more with frequency crystal 7.
3), the second doping Nd
3+The fundamental frequency light of 1.3 micron waveband scopes of laser crystal 12 emission upwards through the second acousto-optic adjusting Q crystal 14, the second second harmonic speculum 15 incides second frequency-doubling crystal 16, produce second-harmonic red laser by the 17 coupling outputs of the 3rd plane output end mirror through second frequency-doubling crystal, 16 frequencys multiplication, the fundamental frequency light of unconverted is by 17 reflections of the 3rd plane output end mirror, once more through second frequency-doubling crystal, 16 frequencys multiplication, frequency doubled light is together exported end mirror 17 coupling outputs by 15 reflections of the second second harmonic speculum and the frequency doubled light that produces for the first time through the 3rd plane, remain 1.3 microns fundamental frequency light through the second second harmonic speculum 15, the second acousto-optic adjusting Q crystal 14, the second doping Nd
3+Laser crystal 12 incide on the polarizing beam splitter mirror 5, incide and frequency crystal 7 through second harmonic speculum 6 by 1.3 micron waveband scope ' s ' polarization fundamental frequency light after polarizing beam splitter mirror 5 reflections, ' p ' polarization fundamental frequency light warp and frequency crystal 7 and frequency with another 1.0 micron waveband scope, that produce and 1.3 microns ' s ' polarization fundamental frequency light frequency gold-tinted and part unconverted and 1.0 microns ' p ' polarizations are by the 8 coupling outputs of first plane output end mirror, and by Amici prism 9 beam split, 1.3 microns ' s ' polarization fundamental frequency light of another part unconverted return the 3rd plane output end mirror 17 by former road, first plane output end mirror, 8 reflection backs, pass through once more and frequently produce again with 1.0 microns ' p ' polarization fundamental frequency light during crystal 7 and gold-tinted frequently, generation with the frequency gold-tinted by 6 reflections of the first second harmonic speculum after through exporting end mirror 8 output that is coupled once more by first plane with frequency crystal 7.
The embodiment of the invention is LD profile pump Nd
3+: the YAG intracavity frequency doubling/and frequently 0.660 micron ruddiness, 0.532 micron green glow, 0.589 micron gold-tinted, 1.319 microns and 1.064 microns lasers that infrared light five wavelength lasers are exported simultaneously.1.064 micron ' p ' polarization fundamental frequency light vibrates in the linear pattern resonant cavity of plano-concave total reflection end mirror 1 and first plane output end mirror, 8 compositions, 1.064 micron ' s ' polarization fundamental frequency light vibrates in the L type resonant cavity that plano-concave total reflection end mirror 1, polarizing beam splitter mirror 5 and second plane output end mirror 10 are formed, and 1.319 microns ' s ' polarization fundamental frequency light vibrate in the resonant cavity that the 3rd plane output end mirror 17, polarizing beam splitter mirror 5 and first plane output end mirror 8 constitute.
The radius of curvature of plano-concave total reflection end mirror 1 is chosen for 1000mm, is coated with 1.064 microns fundamental frequency light towards the one side of the first acousto-optic Q modulation crystal 2 and is all-trans the film reflectivity greater than 99.9%; The part that output end mirror 8 in first plane is coated with 1.064 and 1.319 microns fundamental frequency light towards the one side with frequency crystal 7 see through the film transmitance be respectively 3% and 2% and 0.5 micron waveband scope and frequently the anti-reflection film transmitance of light greater than 99.9%, another side be coated with 1.064 and 1.319 microns fundamental frequency light and 0.589 micron and frequently the anti-reflection film transmitance of light greater than 99.8%; The anti-reflection film transmitance that the two sides of second plane output end mirror 10 all is coated with 0.532 micron frequency multiplication green glow wherein also is coated with the high-reflecting film reflectivity of 1.064 micron waveband scope fundamental frequency light greater than 99.8% towards first frequency-doubling crystal, 11 one sides greater than 99.8%; The anti-reflection film transmitance that the two sides of the 3rd plane output end mirror 17 all is coated with 0.660 micron second-harmonic red laser is greater than 99.8%, and wherein the one side towards second frequency-doubling crystal 16 also is coated with the high-reflecting film reflectivity of 1.319 microns fundamental frequency light greater than 99.8%.
Polarizing beam splitter mirror 5 diameters are Φ=20mm, with horizontal forward angle be 135 °, towards the first doping Nd
3+The one side of laser crystal 3 be coated with the Double-color film of 1.064 microns 45 ° ' p ' polarizations anti-reflection (transmitance T＞99.8%) and the 1.064 microns 45 ° high anti-reflectivity R of ' s ' polarization＞99.8%, towards the second doping Nd
3+The one side (top) of laser crystal 12 also to be coated with the Double-color film of 45 ° of ' s ' polarization high-reflecting film reflectivity R＞99.8% of 1.064 microns 45 ° anti-reflection transmitance T of ' p ' polarization＞99.8% and 1.319 micron.
The diameter of the first second harmonic speculum 6 is Φ=20mm, the two sides all is coated with the anti-reflection film transmitance of 1.064 microns and 1.319 microns fundamental frequency light greater than 99.9%, wherein towards the one side with frequency crystal KTP 7 also be coated with 0.589 micron and frequently the high-reflecting film reflectivity of gold-tinted greater than 99.8%; The second second harmonic speculum, 15 diameters are Φ=20mm, the two sides all is coated with the anti-reflection film transmitance of 1.319 microns fundamental frequency light greater than 99.9%, and wherein the one side towards the second frequency-doubling crystal LBO 16 also is coated with the high-reflecting film reflectivity of 0.660 micron second-harmonic red laser greater than 99.8%.
The first doping Nd
3+Laser crystal 3 be Nd
3+: YAG, Nd
3+Doping content be 0.8%, be of a size of Φ 4.0mm * 90mm, two logical light faces all are coated with 1.064 microns and 1.319 microns double-colored high transmittance film transmitances all greater than 99.8%.The second doping Nd
3+Laser crystal 12 be Nd
3+: YAG, Nd
3+Doping content be 1.0%, two ends all are coated with 1.064 microns and 1.319 microns double-colored anti-reflection film transmitances all greater than 99.8%, are of a size of Φ 4.0mm * 90mm.
It is 27kHz that the first acousto-optic Q modulation crystal 2 and the second acousto-optic adjusting Q crystal 14 are subjected to same drive source control centre frequency, and its modulating frequency is adjustable at 1～50kHz.
Adopt the ktp crystal (θ=78.9 °, φ=0 °) of the critical phase matched of II classes with frequency crystal 7, be of a size of 4mm * 4mm * 7mm two logical light faces and all be coated with three look films 1.319 microns, 1.064 microns and 0.589 micron high.
First frequency-doubling crystal 11 is selected ktp crystal (θ=90 ° of the critical phase matched of II class for use, φ=23.8 °), be of a size of 3mm * 3mm * 5mm, two logical light faces all are coated with 1.064 microns and 0.532 micron double-colored anti-reflection film transmitance all greater than 99.8%, the side evenly scribble silver powder and wrap up with indium foil after be put in the water-cooling copper billet.
Second frequency-doubling crystal 16 select for use the critical phase matched of I class lbo crystal (θ=85.9 °, φ=0 °), be of a size of 3 mm * 3mm * 5mm, two logical light faces all are coated with 1.319 microns and 0.660 micron double-colored anti-reflection film transmitance all greater than 99.8%, the side evenly scribble silver powder and wrap up with indium foil after be put in the water-cooling copper billet.
The first doping Nd
3+Laser crystal Nd
3+: after YAG 3 absorbs the energy of LD side first pumping source, 4 radiation, the formation inverted population distributes, its 1.064 microns ' s ' polarization fundamental frequency light that send vibrate in the L type resonant cavity that plano-concave total reflection end mirror 1, polarizing beam splitter mirror 5 and second plane output end mirror 10 are formed, after adding the first frequency-doubling crystal KTP 11,0.532 micron frequency multiplication green glow is outside second plane output end mirror, 10 output cavities; The second doping Nd
3+Laser crystal Nd
3+: after YAG 12 absorbs the energy of LD side second pumping source, 13 radiation, 1.319 microns ' s ' polarization fundamental frequency light that send vibrate in the resonant cavity that the 3rd plane output end mirror 17, polarizing beam splitter mirror 5 and first plane output end mirror 8 constitute, after inserting the second frequency-doubling crystal LBO 16 between the 3rd plane output end mirror 17 and the second second harmonic speculum 15,1.319 microns ' s ' polarizations of part fundamental frequency light produces 0.660 micron ruddiness through frequency multiplication and is exported outside end mirror 17 output cavities by the 3rd plane.1.064 micron ' p ' polarization fundamental frequency light vibrates in the linear pattern resonant cavity of plano-concave total reflection end mirror 1 and first plane output end mirror, 8 compositions, between the first second harmonic speculum 6 and first plane output end mirror 8, add and frequency crystal 7 simultaneously, 1.319 micron ' s ' polarised light and 1.064 microns ' p ' polarised light warps are given birth to 0.589 micron gold-tinted with producing frequently, 1.064 microns of unconverted and 1.319 microns fundamental frequency light with 0.589 micron gold-tinted together outside first plane output end mirror, 8 output cavities, separate at a certain angle by Amici prism 9, so far realized 0.660 micron ruddiness 3W, 0.532 micron green glow 20W, 0.589 micron gold-tinted 4W, 1.319 five wavelength lasers of micron laser 100mW and 1.064 microns laser 240mW are exported simultaneously.
Claims (10)
1. the laser aid that all solid state five wavelength are exported simultaneously comprises plano-concave total reflection end mirror (1), it is characterized in that, the horizontal optical path of incident plano-concave total reflection end mirror (1) is equipped with the first acousto-optic Q modulation crystal (2), the first doping Nd successively
3+Laser crystal (3) and LD side first pumping source (4), polarizing beam splitter mirror (5), the first second harmonic speculum (6) and crystal (7), first plane output end mirror (8), Amici prism (9) frequently; The top of polarizing beam splitter mirror (5) is equipped with the 3rd plane output end mirror (17), second frequency-doubling crystal (16), the second second harmonic speculum (15), the second acousto-optic adjusting Q crystal (14), the second doping Nd successively on another non-horizontal optical path
3+Laser crystal (12) and side second pumping source (13) thereof; The below of polarizing beam splitter mirror (5) is equipped with first frequency-doubling crystal (11), second plane output end mirror (10) successively.
2. the laser aid that all solid state five wavelength according to claim 1 are exported simultaneously is characterized in that polarizing beam splitter mirror (5) is towards the first doping Nd
3+The one side of laser crystal (3) be coated with the high anti-Double-color film of ' p ' polarization ' s ' polarizations anti-reflection and 1.0 micron waveband scopes of 1.0 micron waveband scopes, towards the second doping Nd
3+The one side of laser crystal (12) also to be coated with the Double-color film of ' s ' polarization high-reflecting film of the anti-reflection and 1.3 micron waveband scopes of ' p ' polarizations of 1.0 micron waveband scopes, its angle of inclination and horizontal forward angle are 130 °～140 °.
3. the laser aid that all solid state five wavelength according to claim 1 are exported simultaneously, it is characterized in that, described horizontal optical path becomes 130 °～140 ° and 50 °～40 ° angles respectively with polarizing beam splitter mirror (5) respectively with another non-horizontal optical path, 1.3 microns ' s ' polarised light light of another non-horizontal optical path through after polarizing beam splitter mirror (5) reflection with horizontal optical path on 1.0 microns ' p ' polarised lights are coaxial is coupled to and crystal (7) frequently, make two basic frequency beams have maximum space to overlap and high and frequency conversion efficiency.
4. the laser aid that all solid state five wavelength according to claim 1 are exported simultaneously is characterized in that, plano-concave total reflection end mirror (1) is coated with the 1.0 micron waveband fundamental frequency light film that is all-trans towards the one side of the first acousto-optic Q modulation crystal (2); First plane is exported end mirror (8) and is coated with the anti-reflection film of the part of 1.0 and 1.3 micron waveband scope fundamental frequency light through film and 0.5 micron waveband scope and frequency light towards the one side with frequency crystal (7), and another side is coated with the anti-reflection film of 1.0 and 1.3 micron waveband scope fundamental frequency light and 0.5 micron waveband scope and frequency light; The two sides of second plane output end mirror (10) all is coated with the anti-reflection film of 0.5 micron waveband scope frequency multiplication green glow, wherein also is coated with the high-reflecting film of 1.0 micron waveband scope fundamental frequency light towards the one side of first frequency-doubling crystal (11); The two sides of the 3rd plane output end mirror (17) all is coated with the anti-reflection film of 0.6 micron waveband scope second-harmonic red laser, wherein also is coated with the high-reflecting film of 1.3 micron waveband scope fundamental frequency light towards the one side of second frequency-doubling crystal (16).
5. the laser aid that all solid state five wavelength according to claim 1 are exported simultaneously is characterized in that it is 800mm～1200mm that the radius of curvature of plano-concave total reflection end mirror (1) is chosen scope.
6. the laser aid that all solid state five wavelength according to claim 1 are exported simultaneously, it is characterized in that first frequency-doubling crystal (11), second frequency-doubling crystal (16) and frequency crystal (7) are two or three same a kind of, the different crystal among three lithium borate LBO, beta-barium metaborate BBO, the potassium titanium oxide phosphate KTP.
7. the laser aid that all solid state five wavelength according to claim 1 are exported simultaneously is characterized in that, the first doping Nd
3+The laser crystal (3) and the second doping Nd
3+Laser crystal (12) be neodymium-doped yttrium-aluminum garnet Nd
3+: YAG, Nd-doped yttrium vanadate Nd
3+: YVO
4, neodymium-doped yttrium aluminate Nd
3+: YAP, neodymium-doped yttrium-fluoride lithium Nd
3+: the same a kind of or different two kinds of crystal in the YLF Lasers crystal.
8. the laser aid that all solid state five wavelength according to claim 1 are exported simultaneously is characterized in that, the first acousto-optic Q modulation crystal (2) and the second acousto-optic adjusting Q crystal (14) are controlled by same drive source, are positioned over the first doping Nd respectively
3+The left side and the second doping Nd of laser crystal (3)
3+The top of laser crystal (12).
9. the laser aid that all solid state five wavelength according to claim 1 are exported simultaneously, it is characterized in that, the two sides of the first second harmonic speculum (6) all is coated with the anti-reflection film of 1.0 and 1.3 micron waveband scope fundamental frequency light, wherein also is coated with the high-reflecting film of 0.5 micron waveband scope and frequency gold-tinted towards the one side with frequency crystal (7); The two sides of the second second harmonic speculum (15) all is coated with the anti-reflection film of 1.3 micron waveband scope fundamental frequency light, wherein also is coated with the high-reflecting film of 0.6 micron waveband scope second-harmonic red laser towards the one side of second frequency-doubling crystal (16).
10. the laser aid laser generation method of a claim 1, undertaken by following step successively:
1), the first doping Nd
3+The laser crystal (3) and the second doping Nd
3+Laser crystal (12) absorb the energy of LD side first pumping source (4) and side second pumping source (13) radiation respectively after, form inverted population and distribute Nd
3+Respectively at energy level
4F
3/2-
4I
11/2With
4F
3/2-
4I
13/2Between transition, produce the excited fluorescence radiation of 1.0 microns and 1.3 micron waveband scopes, the vibration in corresponding laser resonant cavity separately of the fluorescence of radiation is amplified the back and is formed stable fundamental frequency light, wherein the fundamental frequency light of 1.0 micron waveband scopes is through polarizing beam splitter mirror (5) beam splitting, and the mutually perpendicular laser in two polarization directions is exported in the straight chamber of being made up of plano-concave total reflection end mirror (1), first plane output end mirror (8) with by plano-concave total reflection end mirror (1), polarizing beam splitter mirror (5), second plane respectively in the refrative cavity that end mirror (10) forms and formed vibration;
2), the first doping Nd
3+The fundamental frequency light of 1.0 micron waveband scopes of laser crystal (3) emission by plano-concave total reflection end mirror (1) reflection, through the first acousto-optic Q modulation crystal (2), the first doping Nd
3+Laser crystal (3) incide polarizing beam splitter mirror (5), polarizing beam splitter mirror (5) is divided into two light paths, wherein a light path is that ' s ' polarization fundamental frequency light is through first frequency-doubling crystal (11) frequency multiplication, the frequency multiplication green glow that produces and ' s ' polarization fundamental frequency light of unconverted together arrive second plane output end mirror (10), through reflection, ' s ' polarization fundamental frequency light is once more by after first frequency-doubling crystal (11) frequency multiplication, residue ' s ' polarization fundamental frequency light returns plano-concave total reflection end mirror (1) along former road, the green glow of twice frequency multiplication generation is together through second plane output end mirror (10) coupling output; Another light path is that ' p ' polarization fundamental frequency light incides and frequency crystal (7) through the first second harmonic speculum (6), with ' s ' polarization fundamental frequency light of 1.3 micron waveband scopes through and frequently crystal (7) and frequently back ' p ' polarization fundamental frequency light with 1.0 micron wavebands frequency gold-tinted and part unconverted that produce be coupled by first plane output end mirror (8) and export, and by Amici prism (9) beam split, ' p ' polarization fundamental frequency light of another part unconverted returns plano-concave total reflection end mirror (1) by former road, first plane output end mirror (8) reflection back, through and frequently produce again with ' s ' polarization fundamental frequency optical coupling of 1.3 micron waveband scopes during crystal (7) and gold-tinted frequently, generation with the frequency gold-tinted by the reflection of the first second harmonic speculum (6) after through exporting by first plane output end mirror (8) coupling once more with frequency crystal (7);
3), the second doping Nd
3+The fundamental frequency light of 1.3 micron waveband scopes of laser crystal (12) emission upwards through the second acousto-optic adjusting Q crystal (14), the second second harmonic speculum (15) incides second frequency-doubling crystal (16), through second frequency-doubling crystal (16) frequency multiplication, produce second-harmonic red laser by the 3rd plane output end mirror (17) coupling output, the fundamental frequency light of unconverted is by the 3rd plane output end mirror (17) reflection, once more through second frequency-doubling crystal (16) frequency multiplication, frequency doubled light once more through the 3rd plane output end mirror (17) coupling output, remains 1.3 microns fundamental frequency light through the second second harmonic speculum (15) by the reflection of the second second harmonic speculum (15), the second acousto-optic adjusting Q crystal (14), the second doping Nd
3+Laser crystal (12) incide on the polarizing beam splitter mirror (5), incide and frequency crystal (7) through second harmonic speculum (6) by 1.3 micron waveband scope ' s ' polarization fundamental frequency light after polarizing beam splitter mirror (5) reflection, ' p ' polarization fundamental frequency light warp and frequency crystal (7) and frequency with another 1.0 micron waveband scope, that produce and 1.3 microns ' s ' polarization fundamental frequency light frequency gold-tinted and part unconverted and 1.0 microns ' p ' polarizations are by first plane output end mirror (8) coupling output, and by Amici prism (9) beam split, 1.3 microns ' s ' polarization fundamental frequency light of another part unconverted return the 3rd plane output end mirror (17) by former road, first plane output end mirror (8) reflection back, pass through once more and frequently produce again with 1.0 microns ' p ' polarization fundamental frequency light during crystal (7) and gold-tinted frequently, generation with the frequency gold-tinted by the reflection of the first second harmonic speculum (6) after through exporting end mirror (8) output that is coupled once more by first plane with frequency crystal (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101505366A CN101345389B (en) | 2008-08-04 | 2008-08-04 | Full-solid state five-wavelength simultaneously outputting laser device and 5-wavelength laser generation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101505366A CN101345389B (en) | 2008-08-04 | 2008-08-04 | Full-solid state five-wavelength simultaneously outputting laser device and 5-wavelength laser generation method |
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|---|---|
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| CN101345389B true CN101345389B (en) | 2010-08-18 |
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| CN102332678B (en) * | 2011-08-04 | 2012-12-26 | 天津奇谱光电技术有限公司 | External cavity type broadband tunable laser coupling filter with double laser gain media |
| CN102306900B (en) * | 2011-08-19 | 2013-05-01 | 天津奇谱光电技术有限公司 | External cavity broadband tunable laser with double gain mediums of polarization coupling |
| CN102570280B (en) * | 2012-01-09 | 2013-10-16 | 沈阳师范大学 | Blue, green and ultraviolet solid laser device based on submarine communication application and laser generating method thereof |
| CN102780148B (en) * | 2012-06-29 | 2014-11-26 | 中国电子科技集团公司第十一研究所 | Intracavity pump laser using complex cavity |
| CN108814712B (en) * | 2018-04-23 | 2020-06-16 | 中国科学院理化技术研究所 | Composite laser medical device and method for cutting and hemostasis parallel operation |
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