CN208656154U - A kind of picosecond laser - Google Patents
A kind of picosecond laser Download PDFInfo
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- CN208656154U CN208656154U CN201821291884.0U CN201821291884U CN208656154U CN 208656154 U CN208656154 U CN 208656154U CN 201821291884 U CN201821291884 U CN 201821291884U CN 208656154 U CN208656154 U CN 208656154U
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Abstract
The utility model discloses a kind of picosecond lasers, including seed laser component, Pulse Compression component, the laser that seed laser component exports is compressed to ps grades by the Pulse Compression component, and picosecond laser also has energy amplifier module, the energy amplifier module has two laser bars be distributed along optical path, and the laser being transmitted in the energy amplifier module is at least through light out after the amplification twice of laser bar described in one of them.The picosecond laser of the utility model has seed laser component, Pulse Compression component and energy amplifier module, it is externally exported after the compressed laser of pulsewidth compression assembly is amplified by energy amplifier module, wherein, the energy amplifier module laser of the utility model is along optical path at least through the enhanced processing twice of a laser bar, the laser of acquisition has large energy, to meet requirement.
Description
Technical field
The utility model relates to technical field of optical instrument more particularly to a kind of picosecond lasers.
Background technique
In recent years, for treating the continuous technological innovation of laser medicine product of Skin pigment abnormalities, from energy, light
Have very big breakthrough on spot pattern, pulsewidth shorten to nearly 10 times of picosecond laser of traditional Q machine, at last maximum technology into
Step, picosecond laser single pulse energy herein is nearly thousand times high compared with the picosecond laser in industrial processes, can treat tradition Q machine and not control
Pigment disorders.The picosecond laser of this big energy has clinical advantage outstanding on medical and beauty treatment.
A kind of picosecond laser that the output of hundred picoseconds of pulsewidths can be achieved is disclosed in the prior art, and seed source laser generates
Nanosecond laser first pass around single channel round trip laser bar being placed in parallel with seed source laser bar and realize that energy is put for the first time
Greatly, amplified laser passes sequentially through a series of optical devices arranged in optical transmission direction, optical transmission direction and transmission shape
Repeatedly variation occurs for formula, eventually enters into SBS medium pool and realizes compression, compressed laser swashs again by aforementioned single channel round trip
Optical wand realizes the secondary amplification of energy, and the output of picosecond laser is carried out finally by upstream optical path.
The shortcomings that this structure is: by expanding and after energy amplification the threshold of stimulated Brillouin scattering occurs for seed light
It is worth relatively high, laser threshold is easy to generate partial vaporization point, partial vaporization point week near focal point generally in 100mJ or more
It can go bad after the energy of the Absorption of Medium laser enclosed and generate many micro-bubbles, this can reduce the service life of SBS, and the light exported
Impulse waveform generates very big pulsation, the serious output stability for reducing laser.
Utility model content
The purpose of this utility model is that passing through the layout of reasonable arrangement compression stage and amplifying stage, SBS medium is made to work
Will not vaporize in the process causes output waveform unstable.Therefore guarantee that the picosecond laser energy into before amplifying stage and pulse width are tight
Lattice do not change, and control the size that entire laser exports energy by being delayed between amplification system grade, guarantee to export in laser
The thermal focal of laser is stablized during energy adjustment, and laser divergence angle is constant when energy change.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of picosecond laser disclosed by the utility model, comprising:
Seed laser component, the seed laser component is to generate and export seed laser；
The seed laser line focus mirror of Pulse Compression component, the seed laser component output is exported to the Pulse Compression
Component, and the Pulse Compression component is by the Pulse Compression of seed laser；
Optical path between the seed laser component and Pulse Compression component has the second polarizing film and third a quarter
Wave plate, the horizontal linear polarization ray laser through seed laser component output is through the second polarizing film and through third quarter-wave
Become circular polarization light wave after piece, the Pulse Compression component has a reflection focus lamp far from the second polarizing film one end, through institute
State the focus lamp convergence of Pulse Compression component laser beam reach after the reflection focus lamp SBS medium pool internal focus simultaneously
Along backtracking, the reversed Stokes laser that the Pulse Compression component generates shape after the third quarter-wave plate
Output is reflected as vertical polarization laser and through the second polarizing film；
The picosecond laser also has energy amplifier module, and the energy amplifier module receives the second polarizing film reflection
Laser, and output is amplified to the laser；
The energy amplifier module has two laser bars being distributed along optical path, and is transmitted in the energy amplifier module
Laser at least through after the amplification twice of laser bar described in one of them go out light.
Further, the seed laser component is by the first total reflection mirror, aperture, Q-switch component, the first polarization
Piece, the first quarter-wave plate, first laser stick, the second quarter-wave plate and outgoing mirror composition, the seed laser component
Output beam is horizontal linear polarization laser beam.
Further, there is expand unit between the Pulse Compression component and the energy amplifier module；
The expand unit includes the vertical polarization laser received by the reflection of the first reflecting mirror and enters beam expanding lens group, through institute
It states after expanding the vertical polarization laser after microscope group expands by second orifice diaphragm progress shrink beam, becomes after half wave plate
For horizontal oscillations laser, energy amplifier module is entered after horizontal oscillations laser light third polarizing film.
Further, the energy amplifier module includes the second laser for receiving the laser of the third polarizing film output
Stick, the laser through second laser stick amplification are transmitted to third laser bar by the second reflecting mirror, third reflecting mirror and carry out energy
The laser of amount amplification, the third laser bar output is transmitted to the second total reflective mirror, and described second through the 4th quarter-wave plate
Total reflective mirror will be transmitted to the laser at this and reflect along original optical path, again passes by become after the 4th quarter-wave plate polarizing vertically and swash
Light, the vertical polarization laser successively by third laser bar and second laser stick to after carrying out energy secondary amplification through described
The reflection of three polarizing films is exported to outside.
Further, there is the gyrotropi crystal laid along optical path between the second laser stick and third laser bar.
Further, the energy amplifier module includes the second laser for receiving the laser of the third polarizing film output
Stick, the laser amplified through the second laser stick are transmitted to third total reflective mirror, third total reflective mirror by the 5th quarter-wave plate
It will be transmitted to laser thereon and reflected along original optical path and again pass by become to polarize vertically after the 5th quarter-wave plate and swash
Light carries out second energy amplification by second laser stick, and amplified laser reflexes to the 4th reflecting mirror by third polarizing film,
The laser reflected through the 4th reflecting mirror passes sequentially through half wave plate and the 4th polarizing film is transmitted in third laser bar
Carry out energy amplification；
It is anti-through the 4th total reflective mirror after the amplified laser of third laser bar energy is by the 6th quarter-wave plate
It penetrates and becomes vertical polarization laser after again passing by the 6th quarter-wave plate, the vertical polarization laser is via the 4th polarization
Piece reflection is exported to outside.
Further, the energy amplifier module includes the second laser for receiving the laser of the third polarizing film output
Stick carries out energy amplification through the second laser stick, and it is complete that amplified laser by the 5th quarter-wave plate is transmitted to third
Anti- mirror, third total reflective mirror will be transmitted to after laser thereon reflected and again pass by the 5th quarter-wave plate along original optical path
Become vertical polarization laser, carries out energy secondary amplification through second laser stick, amplified light beam is reflected by third polarizing film
To the 4th reflecting mirror, the laser reflected through the 4th reflecting mirror passes sequentially through half wave plate and the 4th polarizing film is transmitted to
Energy amplification is carried out in third laser bar and is exported to outside.
Further, the energy amplifier module includes the second laser stick for receiving the third polarizing film output, described
The amplified laser of second laser stick is successively by the 4th reflecting mirror and the 5th reflecting mirror and through entering the after the 4th polarizing film
Three laser bars carry out energy amplification, and amplified laser transports to the 4th total reflective mirror by the 5th quarter-wave plate, and the 4th is all-trans
Mirror will be transmitted to laser thereon and swashing of becoming after the 5th quarter-wave plate to polarize vertically reflected and again passed by along original optical path
Light passes through the 4th polarizing film reflection output to outside after third laser bar amplifies.
In the above-mentioned technical solutions, a kind of picosecond laser provided by the utility model, has the advantages that
1, the layout of reasonable arrangement compression stage and amplifying stage vaporize SBS medium pool will not during the work time, guarantee arteries and veins
Output energy and pulsewidth are stablized (before entering energy amplifier) after width compression；
2, the size of output energy is controlled by being delayed between amplification system grade, guarantees to export energy adjustment mistake in laser
Cheng Zhong, pulse width do not change strictly, and the thermal focal of laser is stablized.
Stimulated Brillouin scattering threshold value can be reached near focus point after light beam enters SBS medium pool, generate reversed pass
Defeated stokes light, stokes light compress laser pulse width in transmission process.
Seed laser exports the general very little of energy, and typically less than 10mJ is directly entered SBS medium pool and forms excited Brillouin
Threshold value when scattering is relatively small, and threshold value is generally less than 3mJ at this time, will not generate partial vaporization near laser spot and make defeated
Beam shape is unstable out, the very big situation of pulse width variations；But by expanding and after energy amplification excited Brillouin occurs for seed light
The threshold value of scattering is relatively high, and threshold value is easy to generate partial vaporization point, partial vaporization near focal point generally in 100mJ or more
It can go bad after the energy of Absorption of Medium laser around point and generate many micro-bubbles, medium is rotten to reduce SBS medium pool
Service life, bubble will affect light transmission, energy by Absorption of Medium make output optical pulse energy and pulsewidth generate it is very big
Pulsation, the serious output stability for reducing laser.This layout is that the application is different from other based on SBS progress pulsewidth pressure
The salient the most of contracting.
In carrying out energy amplification process, the pulsewidth of laser, angle of divergence polarization state etc. will not all change laser, only be energy
Increase.
As stated above, (seed laser of a few mJ output energy is advanced for the topology layout of the picosecond laser of the utility model
Enter and enter amplifying stage after SBS) in open source information at home and abroad beyond example.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only to record in the utility model
Some embodiments be also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is a kind of light path principle figure of the first embodiment of picosecond laser disclosed by the utility model；
Fig. 2 is a kind of light of the energy amplifier module of second of embodiment of picosecond laser disclosed by the utility model
Road schematic diagram；
Fig. 3 is a kind of light of the energy amplifier module of the third embodiment of picosecond laser disclosed by the utility model
Road schematic diagram；
Fig. 4 is a kind of light of the energy amplifier module of the 4th kind of embodiment of picosecond laser disclosed by the utility model
Road schematic diagram.
Description of symbols:
1, seed laser component；2, Pulse Compression component；3, energy amplifier module；4, the second polarizing film；5, the three or four point
One of wave plate；6, the first reflecting mirror；7, microscope group is expanded；8, second orifice diaphragm；9, half wave plate；10, third polarizing film；
11, the 4th polarizing film；12, the 5th quarter-wave plate；13, third total reflective mirror；14, the 4th total reflective mirror；15, the 4th reflecting mirror；
16, the 5th reflecting mirror；17, the 6th quarter-wave plate；
101, the first total reflective mirror；102, the first aperture；103, Q-switch component；104, the first polarizing film；105, first
Quarter-wave plate；106, first laser stick；107, the second quarter-wave plate；108, outgoing mirror；
201, focus lamp；202, SBS medium pool；203, focus lamp is reflected；
301, second laser stick；302, third laser bar；303, the second reflecting mirror；304, third reflecting mirror；305, optically-active
Crystal；306, the 4th quarter-wave plate；307, the second total reflective mirror.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with attached drawing pair
The utility model is further detailed.
It is shown in Figure 1；
A kind of picosecond laser of the utility model, comprising:
Seed laser component 1, seed laser component 1 is to generate and export seed laser；
Pulse Compression component 2, the output of seed laser line focus mirror 201 that seed laser component 1 exports to Pulse Compression group
Part 2, and Pulse Compression component 2 is by the Pulse Compression of seed laser；
Optical path between the seed laser component 1 and Pulse Compression component 2 has the second polarizing film 4 and the three or four point
One of wave plate 5, through seed laser component 1 export horizontal linear polarization ray laser penetrate the second polarizing film 4, through third a quarter
Becoming circular polarization light wave, Pulse Compression component 2 after wave plate 5 has a reflection focus lamp 203 far from 4 one end of the second polarizing film,
In SBS medium pool 202 after the laser beam arrival reflection focus lamp 203 converged through the focus lamp 201 of pulsewidth compression assembly 2
Internal focus and along backtracking, the reversed Stokes laser that Pulse Compression component 2 generates passes through third quarter-wave plate 5
After be formed as vertical polarization laser and through the second polarizing film 4 reflect export；
The picosecond laser also has energy amplifier module 3, and energy amplifier module 3 receives swashing for the second polarizing film 4 reflection
Light, and output is amplified to the laser；
Energy amplifier module 3 has two laser bars being distributed along optical path, and the laser being transmitted in energy amplifier module 3
At least through after the amplification twice of one of laser bar go out light.
Specifically, the present embodiment specifically discloses a kind of novel picosecond laser device, with seed laser component 1, pulsewidth
3 three main components of compression assembly 2 and energy amplifier module.Wherein, seed laser component 1 is generated as this vibration level laser system
Seed laser, and seed laser is transmitted to Pulse Compression component 2 downstream along optical path, seed laser passes through Pulse Compression component
2~6ns grades of pulse width lasers are compressed to 250~600ps grades of laser by 2 compression.Then, pass through the amplification of energy amplifier module 3
Externally output.Picosecond laser disclosed in the present embodiment by the cooperation of optical device by compressed laser in laser bar into
Row repeatedly amplification, realizes the externally output biggish laser of energy, to meet requirement.
The seed laser component is by the first total reflection mirror 101, aperture 102, Q-switch component 103, the first polarizing film
104, the first quarter-wave plate 105, first laser stick 106, the second quarter-wave plate 107 and outgoing mirror 108 form, described
Seed laser component output beam is horizontal linear polarization laser beam.
Wherein, there is expand unit between above-mentioned Pulse Compression component 2 and energy amplifier module 3；
The expand unit includes receiving to be entered by the laser polarized vertically that the first reflecting mirror 6 reflects to expand microscope group 7, is passed through
It is described expand the vertical polarization laser after microscope group 7 expands by second orifice diaphragm 8 carry out shrink beam after, by half wave
Become the laser of horizontal oscillations after piece 9, enters in energy amplifier module 3 after the laser light third polarizing film 10 of horizontal oscillations.
It is the picosecond laser of the utility model above by the generation seed laser of seed laser component 1 and by Pulse Compression
The process of the compression laser to ps grades of component 2.
Embodiment one:
Shown in Figure 1, Fig. 1 shows the light path principle figure of the first embodiment of the utility model picosecond laser；
Embodiment as the first energy amplifier module 3 of the utility model:
Energy amplifier module 3 includes the second laser stick 301 for receiving the laser that third polarizing film 10 exports in the present embodiment,
The laser amplified through second laser stick 301 by the second reflecting mirror 303, third reflecting mirror 304 be transmitted to third laser bar 302 into
The amplification of row energy, the laser that third laser bar 302 exports are transmitted to the second total reflective mirror 307 through the 4th quarter-wave plate 306, and
Second total reflective mirror 307 will be transmitted to the laser at this and reflect along original optical path, become after again passing by the 4th quarter-wave plate 306
The laser polarized vertically passes through after successively carrying out energy secondary amplification after third laser bar 302 and second laser stick 301 later
The reflection of the third polarizing film 10 is exported to outside.
Firstly, the present embodiment one describe it is a kind of realize two-way round trip energy amplification energy amplifier module 3 structure and
Principle.Structure and optical path are specifically as above, and laser amplifies by the first time energy of second laser stick 301 first, and continues along light
Road is transmitted to third laser bar 302 and carries out second of energy amplification, will then be put by energy twice by the second total reflective mirror 307
Big laser is reflected back along original optical path, again passes by the energy amplification of third laser bar 302 and second laser stick 301, finally
Outside is reflexed to export the biggish laser of energy by third polarizing film 10；And the present embodiment one is real by the cooperation of optical device
The amplification that laser passes through second laser stick 301 and third laser bar 302 twice is showed, as above-mentioned two-way round trip energy is put
Greatly, intensity laser is obtained, meets requirement, and simplify equipment, reduces use cost.
Preferably, there is between second laser stick 301 and third laser bar 302 optically-active laid along optical path in the present embodiment
Crystal 305.Optical path of the present embodiment between second laser stick 301 and third laser bar 302 is mounted with gyrotropi crystal 305,
Purpose is to reduce the thermal depolarization effect in amplification process.
Embodiment two:
Shown in Figure 2, Fig. 2 shows the energy amplification groups of second of embodiment of the utility model picosecond laser
The light path principle figure of part 3；
The embodiment of second of energy amplifier module 3 as the utility model:
Energy amplifier module 3 includes the second laser stick 301 for receiving the laser that third polarizing film 10 exports in the present embodiment,
The laser amplified through second laser stick 301 is transmitted to third total reflective mirror 13 by the 5th quarter-wave plate 12, is all-trans through third
The light beam that mirror 13 reflects becomes the laser polarized vertically after again passing by the 5th quarter-wave plate, is again introduced into second laser and puts
Big stick-means of intimidation carries out energy amplification, and amplified laser reflexes on the 4th reflecting mirror 15 through third polarizing film 10, through the 4th reflecting mirror
The laser of 14 reflections are transmitted to third through the 4th polarizing film 11 by becoming the laser of horizontal oscillations after half wave plate 9
Energy amplification is carried out in laser bar 302；
It is complete through the 4th after the amplified laser of 302 energy of third laser bar is by the 6th quarter-wave plate 17
Anti- mirror 14 reflects and becomes vertical polarization laser after again passing by the 6th quarter-wave plate 17, and the vertical polarization laser is via institute
The 4th polarizing film 11 reflection output is stated to outside.
The embodiment second is that another structure energy amplifier module 3, realize the energy of " single channel round trip+single channel round trip "
Amplification；Specifically: by instead being reflected along original optical path through the amplified laser of second laser stick 301 by third total reflective mirror 13,
The amplification of second laser stick 301 is again passed by, the energy amplification of primary " single channel round trip " is completed at this time, then, through third polarizing film
10 and the 4th reflecting mirror 15 transmission, third laser bar 302 receives amplified laser, and amplifies again to laser, and third
The laser for the output of light end out that laser bar 302 exports is reflected back third laser bar 302 along original optical path by the 4th total reflective mirror 14, then
Energy amplification once is carried out to laser, primary " single channel round trip " energy amplification is completed again at this time, by above-mentioned transmission, laser one
It is secondary to complete four energy amplifications, external output is finally reflexed to by the 4th polarizing film 11.
Embodiment three:
Shown in Figure 3, Fig. 3 shows the energy amplification group of the third embodiment of the utility model picosecond laser
The light path principle figure of part 3；
Embodiment as the third energy amplifier module 3 of the utility model:
Energy amplifier module 3 includes the second laser stick 301 for receiving the laser that third polarizing film 10 exports in the present embodiment,
Energy amplification is carried out through the second laser stick 301, amplified laser is transmitted to third by the 5th quarter-wave plate 12
Total reflective mirror 13, third total reflective mirror 13 will be transmitted to laser thereon and reflect along original optical path and again pass by the 5th a quarter
Become vertical polarization laser after wave plate 12, carries out energy secondary amplification through second laser stick 301, amplified light beam passes through third
Polarizing film 10 reflexes to the 4th reflecting mirror 15, and the laser reflected through the 4th reflecting mirror 15 passes sequentially through half wave plate 9
It is transmitted in third laser bar 302 with the 4th polarizing film 11 and carries out energy amplification and export to outside.
3 principle of energy amplifier module and embodiment two in the present embodiment is essentially identical, but the present embodiment is further simple
The structure for having changed embodiment two realizes the laser energy amplification of " single channel round trip+single channel one way ", through third laser bar 302
Primary amplified laser directly externally exports, and the laser in the embodiment have passed through energy amplification three times, can equally expire
Sufficient requirement, and further simplify structure.
Example IV:
It is shown in Figure 4,
Energy amplifier module 3 includes the second laser stick 301 for receiving the third polarizing film 10 and exporting, second laser stick
301 amplified laser successively enter third after the 4th reflecting mirror 15 and the 5th reflecting mirror 16 and through the 4th polarizing film 11
Laser bar 302 carries out energy amplification, and amplified laser is transmitted to the 4th total reflective mirror 14 by the 5th quarter-wave plate 12, the
Four total reflective mirrors 14 will be transmitted to laser thereon and reflect along original optical path and become perpendicular after again passing by the 5th quarter-wave plate 12
The laser directly polarized passes through the 4th polarizing film 11 reflection output to outside after third laser bar 302 amplifies.
The example IV is the energy amplifier module 3 of another structure, realizes the energy of " single channel one way+single channel round trip "
Amplification.
In the above-mentioned technical solutions, a kind of picosecond laser provided by the utility model, has the advantages that
1, the layout of reasonable arrangement compression stage and amplifying stage vaporize SBS medium pool will not during the work time, guarantee defeated
Energy and pulsewidth are stablized out；
2, the size of output energy is controlled by being delayed between amplification system grade, guarantees to export energy adjustment mistake in laser
Cheng Zhong, pulse width do not change strictly, and the thermal focal of laser is stablized.
Stimulated Brillouin scattering threshold value can be reached near focus point after light beam enters SBS medium pool, generate reversed pass
Defeated stokes light, stokes light compress laser pulse width in transmission process.
Seed laser exports the general very little of energy, and typically less than 10mJ is directly entered SBS medium pool and forms excited Brillouin
Threshold value when scattering is relatively small, and threshold value is generally less than 3mJ at this time, will not generate partial vaporization near laser spot and make defeated
Beam shape is unstable out, the very big situation of pulse width variations；But by expanding and after energy amplification excited Brillouin occurs for seed light
The threshold value of scattering is relatively high, and threshold value is easy to generate partial vaporization point, partial vaporization near focal point generally in 100mJ or more
It can go bad after the energy of Absorption of Medium laser around point and generate many micro-bubbles, medium is rotten to reduce SBS medium pool
Service life, bubble will affect light transmission, energy by Absorption of Medium make output optical pulse energy and pulsewidth generate it is very big
Pulsation, the serious output stability for reducing laser.This layout is that the application is different from other based on SBS progress Pulse Compression
Salient the most.
In carrying out energy amplification process, the pulsewidth of laser, angle of divergence polarization state etc. will not all change laser, only be energy
Increase.
In the application, the output energy and pulsewidth of seed laser be always it is constant, SBS occur after, the laser of output
Energy and picosecond pulse width are also stable；When adjusting laser output energy, the output of seed laser is kept to join
Number is constant, adjusts energy, such laser by the discharge lag between the Implantation Energy and amplifying stage of control amplification system
The laser pulse width of output will not change with the adjusting of output energy.This control method is the important control for guaranteeing that pulsewidth is constant
Means.Other carry out then carrying out generally using first energy amplification is carried out to seed light in the laser of pulse compression based on SBS
Pulse compression carries out once amplifying to energy twice later again, and this laser enters SBS medium pool when adjusting and exporting energy
Incident laser parameter can change, cause when adjusting laser energy, the laser pulse width of output be also variation.This is being cured
It treats and abstains from the most in laser, because in clinic, doctor can be used as the dosage of laser using energy density size, but actually
In, when laser and skin interact, the power density of laser is only most direct and significant physical quantity.Adjusting energy
When, the pulsewidth of only laser be it is constant, energy density just has Clinical significance of MG.For example, to treat size different by doctor
Freckle, doctor, which only needs directly to have by hand, changes laser facula size, and complete machine can automatically adjust energy to guarantee energy density
It is constant.If the pulsewidth of laser is constant, power density is constant before and after adjusting, and function and effect are identical；If this process pulsewidth becomes smaller,
Although adjusting, front and back energy density does not become but power density becomes larger, and function and effect can aggravate.The good of energy is adjusted by being delayed
It is in can accurately control output energy, and the angle of divergence of laser will not change when changing energy or frequency.
As stated above, (seed laser of a few mJ output energy is introduced into for the topology layout of the picosecond laser of utility model
Enter amplifying stage after SBS) in open source information at home and abroad beyond example.
It is above that certain exemplary embodiments of the utility model are only described by way of explanation, undoubtedly, for
Those skilled in the art can be with a variety of different without departing from the spirit and scope of the utility model
Mode is modified described embodiment.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as
Limitation to the utility model claims protection scope.
Claims (8)
1. a kind of picosecond laser characterized by comprising
Seed laser component (1), the seed laser component (1) is to generate and export seed laser；
The seed laser line focus mirror (201) of Pulse Compression component (2), seed laser component (1) output is exported to described
Pulse Compression component (2), and the Pulse Compression component (2) is by the Pulse Compression of seed laser；
Optical path between the seed laser component (1) and Pulse Compression component (2) has the second polarizing film (4) and the three or four point
One of wave plate (5), the horizontal linear polarization ray laser through the seed laser component (1) output is through the second polarizing film (4) and passing through
Become circular polarization light wave after third quarter-wave plate (5), the Pulse Compression component (2) is far from second polarizing film (4) one
End has reflection focus lamp (203), and the laser beam of focus lamp (201) convergence through the Pulse Compression component (2) reaches
In SBS medium pool (202) internal focus and along backtracking, the Pulse Compression component (2) after the reflection focus lamp (203)
The reversed Stokes laser generated is formed as vertical polarization laser after the third quarter-wave plate (5) and through the
Two polarizing films (4) reflection output；
The picosecond laser also has energy amplifier module (3), and the energy amplifier module (3) receives second polarizing film
(4) laser reflected, and output is amplified to the laser；
The energy amplifier module (3) has two laser bars being distributed along optical path, and is transmitted to the energy amplifier module (3)
Interior laser at least through after the amplification twice of laser bar described in one of them go out light.
2. a kind of picosecond laser according to claim 1, which is characterized in that the seed laser component (1) is by first
Total reflection mirror (101), aperture (102), Q-switch component (103), the first polarizing film (104), the first quarter-wave plate
(105), first laser stick (106), the second quarter-wave plate (107) and outgoing mirror (108) composition, the seed laser component
(1) output beam is horizontal linear polarization laser beam.
3. a kind of picosecond laser according to claim 1, which is characterized in that the Pulse Compression component (2) and described
There is expand unit between energy amplifier module (3)；
The expand unit includes receiving the vertical polarization laser reflected by the first reflecting mirror (6) and entering beam expanding lens group (7), warp
It is described expand the vertical polarization laser after microscope group (7) expands by second orifice diaphragm (8) carry out shrink beam after, by half
Become horizontal oscillations laser after wave plate (9), the horizontal oscillations laser light third polarizing film (10) enters energy amplification group afterwards
Part (3).
4. a kind of picosecond laser according to claim 3, which is characterized in that the energy amplifier module (3) includes connecing
The second laser stick (301) for receiving the laser of third polarizing film (10) output, through swashing for the second laser stick (301) amplification
Light is transmitted to third laser bar (302) by the second reflecting mirror (303), third reflecting mirror (304) and carries out energy amplification, and described the
The laser of three laser bars (302) output is transmitted to the second total reflective mirror (307) through the 4th quarter-wave plate (306), and described the
Two total reflective mirrors (307) will be transmitted to the laser at this and reflect along original optical path, again pass by the 4th quarter-wave plate (306) and become afterwards
For vertical polarization laser, which successively passes through third laser bar (302) and second laser stick (301) to carry out
The reflection through the third polarizing film (10) is exported to outside after energy secondary amplification.
5. a kind of picosecond laser according to claim 4, which is characterized in that the second laser stick (301) and third
There is the gyrotropi crystal (305) laid along optical path between laser bar (302).
6. a kind of picosecond laser according to claim 3, which is characterized in that the energy amplifier module (3) includes connecing
The second laser stick (301) for receiving the laser of third polarizing film (10) output, through swashing for the second laser stick (301) amplification
Light is transmitted to third total reflective mirror (13) by the 5th quarter-wave plate (12), and third total reflective mirror (13) will be transmitted to swashing thereon
Light reflects along original optical path and becomes vertical polarization laser after again passing by the 5th quarter-wave plate (12), swashs by second
Optical wand (301) carries out second energy amplification, and amplified laser reflexes to the 4th reflecting mirror (15) by third polarizing film (10),
The laser reflected through the 4th reflecting mirror (15) passes sequentially through half wave plate (9) and the 4th polarizing film (11) is transmitted to the
Energy amplification is carried out in three laser bars (302)；
It is complete through the 4th after the amplified laser of third laser bar (302) energy is by the 6th quarter-wave plate (17)
Anti- mirror (14) reflects and becomes vertical polarization laser after again passing by the 6th quarter-wave plate (17), the vertical polarization laser warp
By the 4th polarizing film (11) reflection output to outside.
7. a kind of picosecond laser according to claim 3, which is characterized in that the energy amplifier module (3) includes connecing
The second laser stick (301) for receiving the laser of third polarizing film (10) output, carries out energy through the second laser stick (301)
Amplification, amplified laser are transmitted to third total reflective mirror (13) by the 5th quarter-wave plate (12), third total reflective mirror (13)
Will be transmitted to laser thereon reflected along original optical path and again pass by become after the 5th quarter-wave plate (12) it is vertical partially
Shake laser, carries out energy secondary amplification through second laser stick (301), amplified light beam is reflexed to by third polarizing film (10)
4th reflecting mirror (15), the laser reflected through the 4th reflecting mirror (15) pass sequentially through half wave plate (9) and the 4th partially
Vibration piece (11), which is transmitted in third laser bar (302), to be carried out energy amplification and exports to outside.
8. a kind of picosecond laser according to claim 3, which is characterized in that the energy amplifier module (3) includes connecing
The second laser stick (301) of third polarizing film (10) output is received, the amplified laser of the second laser stick (301) is successively
By the 4th reflecting mirror (15) and the 5th reflecting mirror (16) and through enter after the 4th polarizing film (11) third laser bar (302) into
The amplification of row energy, amplified laser are transmitted to the 4th total reflective mirror (14) by the 5th quarter-wave plate (12), and the 4th is all-trans
Mirror (14) will be transmitted to laser thereon and reflect along original optical path and become vertical after again passing by the 5th quarter-wave plate (12)
The laser of polarization passes through the 4th polarizing film (11) reflection output to outside after third laser bar (302) amplifies.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821291884.0U CN208656154U (en) | 2018-08-10 | 2018-08-10 | A kind of picosecond laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821291884.0U CN208656154U (en) | 2018-08-10 | 2018-08-10 | A kind of picosecond laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666854A (en) * | 2018-08-10 | 2018-10-16 | 吉林省科英激光股份有限公司 | A kind of picosecond laser |
-
2018
- 2018-08-10 CN CN201821291884.0U patent/CN208656154U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666854A (en) * | 2018-08-10 | 2018-10-16 | 吉林省科英激光股份有限公司 | A kind of picosecond laser |
| CN108666854B (en) * | 2018-08-10 | 2024-01-30 | 吉林省科英激光股份有限公司 | Picosecond laser |
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