CN103346466B - A kind of laser regenerative amplifier - Google Patents
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- CN103346466B CN103346466B CN201310229312.5A CN201310229312A CN103346466B CN 103346466 B CN103346466 B CN 103346466B CN 201310229312 A CN201310229312 A CN 201310229312A CN 103346466 B CN103346466 B CN 103346466B
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Abstract
The invention discloses a kind of laser regenerative amplifier, comprise: all-solid-state picosecond laser mode locking oscillator, first light path adjusting module, 8-shaped light path resonant cavity, coupling module and pump module, wherein, adjusting Q crystal and the gain crystal of parallel placement is comprised in 8-shaped light path resonant cavity, the pump light that pump module sends is coupled into gain crystal through coupling module, all-solid-state picosecond laser mode locking oscillator sends seed light and enter 8-shaped resonant cavity after the first light path adjusting module carries out light path adjustment, export through adjusting Q crystal after repeatedly amplifying in gain crystal.Adopt technical scheme of the present invention, regenerative amplification light can be made can not to transmit light path along seed light and return, effectively solve regenerative amplification light to the impact of seed light.
Description
Technical field
The present invention relates to laser amplification technique field, particularly relate to a kind of laser regenerative amplifier.
Background technology
The high repetition frequency light pulse produced through mode-locked laser has extremely narrow pulse duration, is generally 10
-10~ 10
-15second, be subject to people and pay close attention to widely, but its single pulse energy is for receiving burnt magnitude, peak power is lower, greatly limit its application in some field.
In order to obtain more high-peak power and larger single pulse energy, need to carry out light amplification to seed light, the amplification mode usually adopted has single-pass, passes to and regenerative amplification mode more.Only through gain media once, the energy of extraction is lower for single-pass mode; Although many logical modes repeatedly can extract energy, can not ensure that seed light and pump light can effective pattern matching in gain media, extraction efficiency and beam quality all can reduce; And regenerative amplifier is a stable resonant cavity, seed light and the complete conllinear coupling of pump light can be ensured, improve the beam quality of amplification efficiency and output.
Laser regenerative amplifier common in current industry, in seed light importing and reproduced light derivation process, the faraday isolator adopted can play certain isolation reproduced light and the effect of seed light, but has some reproduced lights to return seeds chamber, have impact on the stability of seed light.The regenerative amplifier also had adopts stricter quarantine measures, seed light imports and reproduced light derives process introducing two or more faraday isolator, but reproduced light and seed light are still in a light path, because reproduced light single pulse energy reaches mJ magnitude, peak power is high, can not ensure that not having reproduced light returns seeds chamber completely, and complex structure, volume is larger.For this reason, common way is, the low-angle making seed light and reproduced light keep certain, not exclusively overlaps.During due to regenerative amplification, seed light is after resonance intracavity round trip tens times, and it is too many that light path departs from main optical path, likely do not export reproduced light, even if bright dipping, regulates difficulty also very large.
From above-mentioned, there is reproduced light and return seeds chamber in the seed light lead-in mode of existing regenerative amplifier and reproduced light derivation mode, affects the problem of seed light locked mode stability.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of laser regenerative amplifier, makes reproduced light can not transmit light path along seed light and returns, and effectively solves reproduced light to the impact of seed light.
The technical solution used in the present invention is, described laser regenerative amplifier, comprise: all-solid-state picosecond laser mode locking oscillator, first light path adjusting module, 8-shaped light path resonant cavity, coupling module and pump module, wherein, adjusting Q crystal and the gain crystal of parallel placement is comprised in 8-shaped light path resonant cavity, the pump light that pump module sends is coupled into gain crystal through coupling module, all-solid-state picosecond laser mode locking oscillator sends seed light and enter 8-shaped resonant cavity after the first light path adjusting module carries out light path adjustment, export through adjusting Q crystal after repeatedly amplifying in gain crystal.
Further, as the optional technical scheme of one, described first light path adjusting module is polarizer or Glan prism, when seed light is the seed light of vertical polarization, its direction of placing is for being suitable for reflective vertical direction polarised light, when seed light is the seed light of horizontal polarization, its direction of placing is for being suitable for reflection levels direction polarised light.
Further, as the optional technical scheme of one, described first light path adjusting module is plane mirror.
Further, described 8-shaped light path resonant cavity, comprise: be positioned at the first reflecting module, the first polarization module, adjusting Q crystal and the second polarization module that 8-shaped light path resonant cavity top is arranged in order, be positioned at 8-shaped light path resonant cavity bottom the first dichroic mirror module arranged in parallel successively, gain crystal and the second dichroic mirror module, and, be positioned at the polarization direction adjusting module in the middle part of 8-shaped light path resonant cavity on cross path and the second reflecting module.
Further, when seed light is the seed light of vertical polarization:
Described first polarization module and the second polarization module are polarizer or Glan prism, and its direction of placing is for being suitable for reflective vertical polarised light, transmission level polarised light;
Within each output cycle of reproduced light, described adjusting Q crystal in seed light through powering on afterwards, until power-off when the level inversion population in gain crystal reaches maximum;
The vertical polarization seed light entered in 8-shaped light path resonant cavity enters the adjusting Q crystal do not powered on after the first polarization module reflection, the second polarization module is incided after adjusting Q crystal transmission, vertical polarization seed light through the second polarization module reflection arrives the first dichroic mirror module after the second reflecting module reflection, the reflection of vertical polarization seed light is entered gain crystal by the first dichroic mirror module, the vertical polarization reproduced light obtained after gain crystal amplifies outputs to the second dichroic mirror module, second dichroic mirror module obtains horizontal polarization reproduced light through polarization direction adjusting module after being reflected by vertical polarization reproduced light, after the first reflecting module reflection, enter through the first polarization module the adjusting Q crystal powered on again and convert vertical polarization reproduced light to, repeatedly amplify in 8-shaped light path resonant cavity according to aforementioned light path, until when the level inversion population in gain crystal reaches maximum, export through the adjusting Q crystal of power-off and the second polarization module successively through the reproduced light that repeatedly amplifies.
Further, when seed light is the seed light of horizontal polarization:
Described first polarization module and the second polarization module are polarizer or Glan prism, and its direction of placing is for being suitable for reflection levels polarised light, transmissive Homeotropic polarised light.
Within each output cycle of reproduced light, described adjusting Q crystal in seed light through powering on afterwards, until power-off when the level inversion population in gain crystal reaches maximum;
The horizontal polarization seed light entered in 8-shaped light path resonant cavity enters the adjusting Q crystal do not powered on after the first polarization module reflection, the second polarization module is incided after adjusting Q crystal transmission, horizontal polarization seed light through the second polarization module reflection arrives the first dichroic mirror module after the second reflecting module reflection, the reflection of horizontal polarization seed light is entered gain crystal by the first dichroic mirror module, the horizontal polarization reproduced light obtained after gain crystal amplifies outputs to the second dichroic mirror module, second dichroic mirror module obtains vertical polarization reproduced light through polarization direction adjusting module after being reflected by horizontal polarization reproduced light, after the first reflecting module reflection, enter through the first polarization module the adjusting Q crystal powered on again and convert horizontal polarization reproduced light to, repeatedly amplify in 8-shaped light path resonant cavity according to aforementioned light path, until when the level inversion population in gain crystal reaches maximum, export through the adjusting Q crystal of power-off and the second polarization module successively through the reproduced light that repeatedly amplifies.
Further, described all-solid-state picosecond laser mode locking oscillator is Nd:YVO
4locked mode psec oscillator;
Described coupling module adopts optical coupling system, and its coupled ratio is 1:1.5 ~ 1:2;
Described pump module adopts the mode of the continuous pumping of end face or end face pulse pump to be incided in gain crystal by pump light.
Further, described first reflecting module and the second reflecting module are plane mirror;
Described first dichroic mirror module and the second dichroic mirror module are plano-convex dichroic mirror, and its plane side is coated with pump light anti-reflection film, and convex surface side is coated with pump light anti-reflection film and reproduced light successively and is all-trans film; Or described first dichroic mirror module and the second dichroic mirror module are plane dichroic mirror, its one side is coated with pump light anti-reflection film, and another side is coated with reproduced light and is all-trans film;
Described polarization direction adjusting module is 1/2nd wave plates.
Further, described adjusting Q crystal is bbo crystal or KD*P crystal, and described gain crystal is Nd:YAG crystal.
Adopt technique scheme, laser regenerative amplifier of the present invention at least has following advantages:
1) regenerative amplification light can not transmit light path along seed light and returns, and effectively solves regenerative amplification light to the impact of seed light.
2) when pump module adopts the mode of end pumping to be incided in gain crystal by pump light, can the thermal effect of compensating gain crystal, make annular chamber regenerative amplifier insensitive to thermal effect.
3) adopt plano-convex dichroic mirror to reflect incident light, can reduce the heating of amplifying crystal and the self focusing produced, efficiency utilization pump light, exports the reproduced light of macro-energy, high light beam quality.
Accompanying drawing explanation
Fig. 1 is the laser regenerative amplifier light channel structure schematic diagram of first embodiment of the invention;
Fig. 2 is the both-end pumping 8-shaped resonant cavity laser regenerative amplifier light path schematic diagram of application example of the present invention.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in detail as after.
First embodiment of the invention, a kind of laser regenerative amplifier, as shown in Figure 1, comprise: all-solid-state picosecond laser mode locking oscillator 101, first light path adjusting module 102, 8-shaped light path resonant cavity, coupling module (112, 114) and pump module (113, 115), wherein, adjusting Q crystal 104 and the gain crystal 108 of parallel placement is comprised in 8-shaped light path resonant cavity, pump module (113, 115) pump light sent is through coupling module (112, 114) gain crystal 108 is coupled into, all-solid-state picosecond laser mode locking oscillator 101 sends seed light and enter 8-shaped resonant cavity after the first light path adjusting module 102 carries out light path adjustment, export through adjusting Q crystal 104 after repeatedly amplifying in gain crystal 108.
All-solid-state picosecond laser mode locking oscillator 101 is Nd:YVO
4locked mode psec oscillator.
First light path adjusting module 102 is polarizer or Glan prism, when seed light is the seed light of vertical polarization, its direction of placing is for being suitable for reflective vertical direction polarised light, when seed light is the seed light of horizontal polarization, its direction of placing is for being suitable for reflection levels direction polarised light; Or the first light path adjusting module 102 is plane mirror.
8-shaped light path resonant cavity, comprise: be positioned at the first reflecting module 111, first polarization module 103, adjusting Q crystal 104 and the second polarization module 105 that 8-shaped light path resonant cavity top is arranged in order, be positioned at 8-shaped light path resonant cavity bottom the first dichroic mirror module 107 arranged in parallel successively, gain crystal 108 and the second dichroic mirror module 109, and, be positioned at the polarization direction adjusting module 110 in the middle part of 8-shaped light path resonant cavity on cross path and the second reflecting module 106.
First reflecting module 111 and the second reflecting module 106 are plane mirror;
First dichroic mirror module 107 and the second dichroic mirror module 109 are plane dichroic mirror, and its one side is coated with pump light anti-reflection film, and another side is coated with reproduced light and is all-trans film; Or preferably, the first dichroic mirror module 107 and the second dichroic mirror module 109 are plano-convex dichroic mirror, and its plane side is coated with pump light anti-reflection film, convex surface side is coated with pump light anti-reflection film and reproduced light successively and is all-trans film.Convex mirror has disperse function at reflex time to light, can reduce the self focusing effect of gain crystal 108 pairs of laser, avoid the damage produced crystal by heat, and ensures that too large change does not occur beam diameter.
Polarization direction adjusting module 110 is 1/2nd wave plates.
Adjusting Q crystal is bbo crystal or KD*P crystal, and gain crystal 108 is Nd:YAG crystal.
Coupling module (112,114) adopts optical coupling system, and its coupled ratio is 1:1.5 ~ 1:2, and preferably, its coupled ratio is 1:2.
Pump module (113,115) adopts semiconductor laser, is incided in gain crystal 108 by pump light by the mode of the continuous pumping of end face or end face pulse pump.
In the present embodiment, seed light can be vertical polarization can be also horizontal polarization, in two kinds of situation light path is described below.
1) when seed light is the seed light of vertical polarization:
First polarization module 103 and the second polarization module 105 are polarizer or Glan prism, and its direction of placing is for being suitable for reflective vertical polarised light, transmission level polarised light;
Within each output cycle of reproduced light, adjusting Q crystal 104 in seed light through powering on afterwards, until power-off when the level inversion population in gain crystal 108 reaches maximum.When realizing, laser detector can be set in the left side of the first polarization module 103, once laser detector detects the reproduced light being about to return adjusting Q crystal 104, then power on for adjusting Q crystal 104.
The vertical polarization seed light entered in 8-shaped light path resonant cavity enters the adjusting Q crystal 104 do not powered on after the first polarization module 103 reflects, the second polarization module 105 is incided after adjusting Q crystal 104 transmission, the vertical polarization seed light reflected through the second polarization module 105 arrives the first dichroic mirror module 107 after the second reflecting module 106 reflects, the reflection of vertical polarization seed light is entered gain crystal 108 by the first dichroic mirror module 107, the vertical polarization reproduced light obtained after gain crystal 108 amplifies outputs to the second dichroic mirror module 109, second dichroic mirror module 109 obtains horizontal polarization reproduced light through polarization direction adjusting module 110 after being reflected by vertical polarization reproduced light, after the first reflecting module 111 reflects, enter through the first polarization module 103 adjusting Q crystal 104 powered on again and convert vertical polarization reproduced light to, repeatedly amplify in 8-shaped light path resonant cavity according to aforementioned light path, until successively through adjusting Q crystal and the output of the second polarization module of power-off.It should be noted that, when level inversion population during adjusting Q crystal 104 power-off also in gain crystal 108 reaches maximum, now, export through the adjusting Q crystal of power-off and the second polarization module successively through the reproduced light that repeatedly amplifies.
2) when seed light is the seed light of horizontal polarization:
First polarization module 103 and the second polarization module 105 are polarizer or Glan prism, and its direction of placing is for being suitable for reflection levels polarised light, transmissive Homeotropic polarised light.
Within each output cycle of reproduced light, adjusting Q crystal 104 in seed light through powering on afterwards, until power-off when the level inversion population in gain crystal 108 reaches maximum;
The horizontal polarization seed light entered in 8-shaped light path resonant cavity enters the adjusting Q crystal 104 do not powered on after the first polarization module 103 reflects, the second polarization module 105 is incided after adjusting Q crystal 104 transmission, the horizontal polarization seed light reflected through the second polarization module 105 arrives the first dichroic mirror module 107 after the second reflecting module 106 reflects, the reflection of horizontal polarization seed light is entered gain crystal 108 by the first dichroic mirror module 107, the horizontal polarization reproduced light obtained after gain crystal 108 amplifies outputs to the second dichroic mirror module 109, second dichroic mirror module 109 obtains vertical polarization reproduced light through polarization direction adjusting module 110 after being reflected by horizontal polarization reproduced light, after the first reflecting module 111 reflects, enter through the first polarization module 103 adjusting Q crystal 104 powered on again and convert horizontal polarization reproduced light to, repeatedly amplify in 8-shaped light path resonant cavity according to aforementioned light path, until successively through adjusting Q crystal and the output of the second polarization module of power-off.It should be noted that, when level inversion population during adjusting Q crystal 104 power-off also in gain crystal 108 reaches maximum, now, export through the adjusting Q crystal of power-off and the second polarization module successively through the reproduced light that repeatedly amplifies.
Introduce an application example of the present invention based on the first embodiment below, be specially a kind of both-end pumping 8-shaped resonant cavity laser regenerative amplifier, as shown in Figure 2.This laser regenerative amplifier comprises the device that is positioned at main optical path and the device two parts from light path.
Part I: the device being positioned at main optical path comprises:
All-solid-state picosecond laser mode locking oscillator, be Nd:YVO4 locked mode psec oscillator, for providing the picopulse seed light of vertical polarization, power output is 300mw, and wavelength is 1064nm, and repetition rate is 91.8MHz, pulse duration 10ps, single pulse energy 3.3nJ;
Seed light imports the first polarizer 202, is suitable for reflective vertical direction polarised light, and the seed light through reflection imports the second polarizer 203, incides in bbo crystal 204 after reflection.The direction that polarizer is put with polarizer the processing mode of laser is relevant, and what this application example adopted is vertical polarization seed light, therefore, is put into by polarizer and is suitable for reflective vertical direction polarised light, transmission level direction polarised light.
Bbo crystal 204, controls the voltage that it applies, and makes to be equivalent to plain film when not applying voltage to this electric light bbo crystal, is equivalent to 1/2nd wave plates when applying 1/2nd voltage to this electric light bbo crystal;
Reproduced light output polarizer 205, is suitable for reflective vertical direction polarised light, transmission level direction polarised light; The 8-shaped resonant cavity of reproduced light output polarizer 205 and the first plane mirror 206, first plano-convex dichroic mirror 207, second plano-convex dichroic mirror 209 and the second plane mirror 211 formation;
Nd:YAG crystal 208, provides gain;
/ 2nd wave plates 210, make horizontal direction polarised light become vertical direction polarised light, make vertical direction polarised light become horizontal direction polarised light;
Wherein, second polarizer 203 is identical with reproduced light output polarizer 205 placement direction, during described electric light bbo crystal 204 making alive, it is made repeatedly to extract energy more than 208 time through Nd:YAG crystal, when the seed light energy level inversion population reached in maximum i.e. Nd:YAG crystal 208 reaches maximum, voltage is moved back to bbo crystal 204 reproduced light is exported.
In this application example, the first plane mirror 206 is 45 ° of speculums; First plano-convex dichroic mirror 207 and the second plano-convex dichroic mirror 209 convex surface plating 1064nm are all-trans film and 808nm anti-reflection film, plane plating 808nm anti-reflection film; Convex radius is 1000mm.First plano-convex dichroic mirror 207 and the second plano-convex dichroic mirror 209 are placed on the both sides of Nd:YAG crystal 208, at a distance of 150mm.
In this application example, the second plane mirror 211 is 30 ° of speculums; Place between first plano-convex dichroic mirror 207 and the second plano-convex dichroic mirror 209 between Nd:YAG crystal 208, second plano-convex dichroic mirror 209 and the second plane mirror 211 and place 1/2nd wave plates 210.
In this application example, Nd:YAG crystal 208 diameter is 3mm, and length is 50mm.Be positioned at the first plano-convex dichroic mirror 207 and the second plano-convex dichroic mirror 209 middle, mixing atomic fraction is 0.6 ~ 1%, preferably 0.6%, low mixes the thermal focal length that atomic fraction both can reduce Nd:YAG crystal 208, and self focusing can be avoided again to cause the damage of crystal.
In this application example, the length of the 8-shaped light path resonant cavity of design is the reproduced light mode radius in 1.6m, Nd:YAG crystal 208 is 0.65mm, and bbo crystal 204 is positioned at the optical mode larger part of 8-shaped light path resonant cavity, can avoid the damage of bbo crystal.
Part II: be positioned at and comprise from the device of light path:
First pumping semiconductor laser 213 and the second pumping semiconductor laser 215, the optical fiber output of producing for nLIGHT company, numerical aperture 0.22, optical fiber core diameter 600 μm, peak power output are the semiconductor laser of 50W.The pump mode of Nd:YAG crystal 208 is the continuous pumping of end face, and pumping current is 5A ~ 6A.The type of cooling adopts water-cooled, and temperature is set to 21 ± 0.5 DEG C.
In this application example, the first pumping semiconductor laser 213 and the second pumping semiconductor laser 215 are by the first coupling pump light system 212 and the second coupling pump light system 214 pumping Nd:YAG crystal 208.The coupled ratio of the first coupling pump light system 212 and the second coupling pump light system 214 is 1:2.The pattern matching that pump light and reproduced light have been reached, is conducive to improving extraction efficiency.
The light path utilizing above-mentioned both-end pumping 8-shaped resonant cavity laser regenerative amplifier to carry out light amplification is described below:
The seed light of vertical polarization reflexes to the bbo crystal 204 of non-high voltage (6000V) through the first polarizer 202 and the second polarizer 203;
Incide reproduced light output polarizer 205 through after bbo crystal 204, and be reproduced light output polarizer 205 and reflex to the first plane mirror 206, then reflex to the first plano-convex dichroic mirror 207 through the first plane mirror 206;
First plano-convex dichroic mirror 207 reflection enters Nd:YAG crystal 208, by reflecting through the second plano-convex dichroic mirror 209 after Nd:YAG crystal 208; The seed light reflected through the second plano-convex dichroic mirror 209 passes through 1/2nd wave plates 210, and the seed light direction half-twist of now vertical polarization, becomes the seed light of horizontal direction;
Through the second polarizer 203 after the second plane mirror 211, now bbo crystal 204 one of plus thirty high pressure 6000V, seed light the second polarizer 203, first plane mirror 206, first plano-convex dichroic mirror 207, second plano-convex dichroic mirror 209 and the second plane mirror 211 composition 8-shaped resonant cavity in multiple oscillation, and be exaggerated, until removed by 1/2nd high pressure 6000V of bbo crystal 204, the laser after amplification exports through reproduced light output polarizer 205.
In this application example, seed light waveform stabilization, due to the impact not by reproduced light, can long-time stable work.
Reproduced light, at repetition rate 1000Hz, exports the amplifying laser of maximum single pulse energy 2.0mJ during both-end pumping electric current 5A.The water temperature of cooling Nd:YAG rod 108, when 20.5 DEG C and 21.5 DEG C, can stablize output single pulse energy 2.0mJ, and having benefited from end pumping can the thermal effect of compensating gain crystal, makes 8-shaped resonant cavity regenerative amplifier insensitive to thermal effect.
The far-field spot center circularity of reproduced light is better, most of Energy distribution at the Airy disk place at center, in fundamental transverse mode characteristic.Be 1.3 at the beam quality factor of X-direction, beam quality factor is in the Y direction 1.6.
In addition, Nd:YAG crystal 208 also can strobe pulse pump mode.
The laser regenerative amplifier of the embodiment of the present invention and application example, can make regenerative amplification light can not transmit light path along seed light and return, and effectively solves regenerative amplification light to the impact of seed light.Again can the thermal effect of compensating gain crystal, make regenerative amplifier insensitive to thermal effect, thus the reproduced light of macro-energy, high light beam quality can be exported.
Should illustrate, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is modified or equivalent replacement, such as use similar lumen type, and in similar lumen type, replace the spirit and scope that gain crystal and the parameter such as corresponding glasses lens plated parameter and curvature do not depart from technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. a laser regenerative amplifier, it is characterized in that, comprise: all-solid-state picosecond laser mode locking oscillator, the first light path adjusting module, 8-shaped light path resonant cavity, coupling module and pump module, wherein, in 8-shaped light path resonant cavity, comprise adjusting Q crystal and the gain crystal of parallel placement;
The pump light that pump module sends is coupled into gain crystal through coupling module, all-solid-state picosecond laser mode locking oscillator sends seed light and enter 8-shaped resonant cavity after the first light path adjusting module carries out light path adjustment, exports in gain crystal after repeatedly amplifying through adjusting Q crystal;
Described 8-shaped light path resonant cavity, comprise: be positioned at the first reflecting module, the first polarization module, adjusting Q crystal and the second polarization module that 8-shaped light path resonant cavity top is arranged in order, be positioned at 8-shaped light path resonant cavity bottom the first dichroic mirror module arranged in parallel successively, gain crystal and the second dichroic mirror module, and, be positioned at the polarization direction adjusting module in the middle part of 8-shaped light path resonant cavity on cross path and the second reflecting module;
When seed light is the seed light of vertical polarization:
Described first polarization module and the second polarization module are polarizer or Glan prism, and its direction of placing is for being suitable for reflective vertical polarised light, transmission level polarised light;
Within each output cycle of reproduced light, described adjusting Q crystal in seed light through powering on afterwards, until power-off when the level inversion population in gain crystal reaches maximum;
The vertical polarization seed light entered in 8-shaped light path resonant cavity enters the adjusting Q crystal do not powered on after the first polarization module reflection, the second polarization module is incided after adjusting Q crystal transmission, vertical polarization seed light through the second polarization module reflection arrives the first dichroic mirror module after the second reflecting module reflection, the reflection of vertical polarization seed light is entered gain crystal by the first dichroic mirror module, the vertical polarization reproduced light obtained after gain crystal amplifies outputs to the second dichroic mirror module, second dichroic mirror module obtains horizontal polarization reproduced light through polarization direction adjusting module after being reflected by vertical polarization reproduced light, after the first reflecting module reflection, enter through the first polarization module the adjusting Q crystal powered on again and convert vertical polarization reproduced light to, repeatedly amplify in 8-shaped light path resonant cavity according to aforementioned light path, until when the level inversion population in gain crystal reaches maximum, export through the adjusting Q crystal of power-off and the second polarization module successively through the reproduced light that repeatedly amplifies.
2. laser regenerative amplifier according to claim 1, it is characterized in that, described first light path adjusting module is polarizer or Glan prism, when seed light is the seed light of vertical polarization, its direction of placing is for being suitable for reflective vertical direction polarised light, when seed light is the seed light of horizontal polarization, its direction of placing is for being suitable for reflection levels direction polarised light.
3. laser regenerative amplifier according to claim 1, is characterized in that, described first light path adjusting module is plane mirror.
4. laser regenerative amplifier according to claim 1, is characterized in that, when seed light is the seed light of horizontal polarization:
Described first polarization module and the second polarization module are polarizer or Glan prism, and its direction of placing is for being suitable for reflection levels polarised light, transmissive Homeotropic polarised light;
Within each output cycle of reproduced light, described adjusting Q crystal in seed light through powering on afterwards, until power-off when the level inversion population in gain crystal reaches maximum;
The horizontal polarization seed light entered in 8-shaped light path resonant cavity enters the adjusting Q crystal do not powered on after the first polarization module reflection, the second polarization module is incided after adjusting Q crystal transmission, horizontal polarization seed light through the second polarization module reflection arrives the first dichroic mirror module after the second reflecting module reflection, the reflection of horizontal polarization seed light is entered gain crystal by the first dichroic mirror module, the horizontal polarization reproduced light obtained after gain crystal amplifies outputs to the second dichroic mirror module, second dichroic mirror module obtains vertical polarization reproduced light through polarization direction adjusting module after being reflected by horizontal polarization reproduced light, after the first reflecting module reflection, enter through the first polarization module the adjusting Q crystal powered on again and convert horizontal polarization reproduced light to, repeatedly amplify in 8-shaped light path resonant cavity according to aforementioned light path, until when the level inversion population in gain crystal reaches maximum, export through the adjusting Q crystal of power-off and the second polarization module successively through the reproduced light that repeatedly amplifies.
5. laser regenerative amplifier according to claim 1, is characterized in that, described all-solid-state picosecond laser mode locking oscillator is Nd:YVO
4locked mode psec oscillator;
Described coupling module adopts optical coupling system, and its coupled ratio is 1:1.5 ~ 1:2;
Described pump module adopts the mode of the continuous pumping of end face or end face pulse pump to be incided in gain crystal by pump light.
6. laser regenerative amplifier according to claim 1, is characterized in that, described first reflecting module and the second reflecting module are plane mirror;
Described first dichroic mirror module and the second dichroic mirror module are plano-convex dichroic mirror, and its plane side is coated with pump light anti-reflection film, and convex surface side is coated with pump light anti-reflection film and reproduced light successively and is all-trans film;
Described polarization direction adjusting module is 1/2nd wave plates.
7. laser regenerative amplifier according to claim 1, is characterized in that, described first dichroic mirror module and the second dichroic mirror module are plane dichroic mirror, and its one side is coated with pump light anti-reflection film, and another side is coated with reproduced light and is all-trans film.
8. laser regenerative amplifier according to claim 1, is characterized in that, described adjusting Q crystal is bbo crystal or KD*P crystal, and described gain crystal is Nd:YAG crystal.
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| CN110071421A (en) * | 2018-01-22 | 2019-07-30 | 中国科学院上海光学精密机械研究所 | A kind of system and method generating femtosecond seed light |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1545172A (en) * | 2003-11-14 | 2004-11-10 | 中国科学院上海光学精密机械研究所 | Table type fully solidified high repetition frequency femtosecond laser |
| CN101697398A (en) * | 2009-10-29 | 2010-04-21 | 哈尔滨工程大学 | Common output mirror thulium and holmium co-doped yttrium lithium fluoride single-frequency pulse laser for master and slave laser purpose |
| CN103022886A (en) * | 2013-01-05 | 2013-04-03 | 北京工业大学 | All-solid-state picosecond laser amplifier |
| CN203387044U (en) * | 2013-06-09 | 2014-01-08 | 中国电子科技集团公司第十一研究所 | Laser regenerative amplifier |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7688443B2 (en) * | 2005-10-11 | 2010-03-30 | Jmar Llc | Multipulse agile laser source for real time spark spectrochemical hazard analysis |
-
2013
- 2013-06-09 CN CN201310229312.5A patent/CN103346466B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1545172A (en) * | 2003-11-14 | 2004-11-10 | 中国科学院上海光学精密机械研究所 | Table type fully solidified high repetition frequency femtosecond laser |
| CN101697398A (en) * | 2009-10-29 | 2010-04-21 | 哈尔滨工程大学 | Common output mirror thulium and holmium co-doped yttrium lithium fluoride single-frequency pulse laser for master and slave laser purpose |
| CN103022886A (en) * | 2013-01-05 | 2013-04-03 | 北京工业大学 | All-solid-state picosecond laser amplifier |
| CN203387044U (en) * | 2013-06-09 | 2014-01-08 | 中国电子科技集团公司第十一研究所 | Laser regenerative amplifier |
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