CN104765176B - A kind of liquid crystal spatial modulates regenerative amplifier - Google Patents
A kind of liquid crystal spatial modulates regenerative amplifier Download PDFInfo
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- CN104765176B CN104765176B CN201510206354.6A CN201510206354A CN104765176B CN 104765176 B CN104765176 B CN 104765176B CN 201510206354 A CN201510206354 A CN 201510206354A CN 104765176 B CN104765176 B CN 104765176B
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- regeneration
- enlarged cavity
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 43
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 41
- 230000008929 regeneration Effects 0.000 claims abstract description 40
- 238000011069 regeneration method Methods 0.000 claims abstract description 40
- 230000003321 amplification Effects 0.000 claims abstract description 28
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 230000008676 import Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 6
- 241001270131 Agaricus moelleri Species 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000028161 membrane depolarization Effects 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 241000755266 Kathetostoma giganteum Species 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000001307 laser spectroscopy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/39—Non-linear optics for parametric generation or amplification of light, infrared or ultraviolet waves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/107—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using electro-optic devices, e.g. exhibiting Pockels or Kerr effect
Abstract
The invention discloses a kind of liquid crystal spatial modulation regenerative amplifier, including：Casing, its left plate is provided with incident seed light import, and right plate is provided with outgoing and amplifies light exit；Optical module, it is arranged in casing, including optoisolator, regeneration resonance enlarged cavity and 45 ° of total reflective mirrors；Optoisolator includes the first polarizer, Faraday rotator and 1/2nd wave plates；Regeneration resonance enlarged cavity includes the second polarizer, pulse choice switch, 0 ° of total reflective mirror, the 3rd polarizer, LD pumped laser crvstals module, the first quarter-wave plate, concavees lens, beam expander, liquid crystal spatial modulator and its driving.Beneficial effects of the present invention：Liquid crystal spatial modulator is inserted in regeneration resonance enlarged cavity, realize the modulation control to amplifying hot spot, Gaussian-shaped beam hot spot is modulated into flat-head type or U-shaped hot spot, avoid Self-focusing, extract the energy of gain media, the regenerative amplification light output of higher energy is obtained, while for the further amplification of laser energy is prepared.
Description
Technical field
The present invention relates to laser technology field, regenerative amplifier is modulated in particular to a kind of liquid crystal spatial.
Background technology
Ultrashort laser pulses device is in laser ranging, radar, biology, laser spectroscopy, photoelectricity sampling technique, communication
The fields such as technology, light holographic storage technology, laser fusion, superfinishing fining-off and blinding weapon have been widely used.
The repetition rate of the laser pulse for directly being produced by seed light oscillator stage under normal circumstances is hundred megahertzs, pulse
Energy is low, to receive burnt magnitude, so as to limit its application in some fields.To obtain ultrashort, super strong laser pulse output, just
Oscillator stage seed optical pulse is amplified.Typically have to the method that oscillator stage seed optical pulse is amplified traveling wave amplify and
Two kinds of regenerative amplification.Because the single pulse energy of oscillator stage is generally receiving burnt magnitude, the first order is amplified and generally utilizes regenerative amplification
Device is used as gain amplification stage.Regenerative amplifier can select laser pulse from mode locking pulse sequence, make it in the gain medium
Come and go several times.Amplify by multiple gain, the energy of the laser pulse of amplifier output can increase 106~107Times, from
And can will receive burnt magnitude pulse amplifying to a MJ magnitude.And regenerative amplifier has cavity resonator structure, the pulse tool after amplification
The spatial beam quality having had.The laser of regenerative amplifier output continues to amplify again by post-amplifier, makes energy further
Amplification.
The hot spot of general regenerative amplifier output is Gaussian beam, in seed light amplification process, with putting for energy
Greatly, single pulse energy more and more higher, the Self-focusing of Gaussian beam is more and more obvious, and the power density of spot center is increasingly
By force, there is very strong strong point.This damage threshold for being easy to exceed device because of the strong point that Gaussian beam self-focusing is produced, causes
The damage of device, increases the difficulty that laser further amplifies, and limits the raising of laser power energy.
The content of the invention
To solve the above problems, it is an object of the invention to provide a kind of liquid crystal spatial modulation regenerative amplifier, make incidence
Seed optical pulse carries out regenerative amplification in regenerative amplifier, and by liquid crystal spatial modulator modulation control amplification process
Seed optical pulse, effectively avoids the self-focusing in amplification process, the strong point phenomenon in hot spot, reduces the damage of device,
Further increase laser output power.
The invention provides a kind of liquid crystal spatial modulation regenerative amplifier, including：
Casing, its left plate is provided with incident seed light import, and the casing right plate is provided with outgoing and amplifies light exit；
Optical module, it is arranged in the casing, including optoisolator, regeneration resonance enlarged cavity and 45 ° of total reflective mirrors；
Wherein, the optoisolator is included in the first polarizer, Faraday rotator and two points set gradually in light path
One of wave plate；
The regeneration resonance enlarged cavity includes the second polarizer, pulse choice switch, 0 ° of total reflective mirror, the 3rd polarizer, LD
Pumped laser crvstal module, the first quarter-wave plate, concavees lens, beam expander, liquid crystal spatial modulator and its driving；
Incident seed light sequentially passes through the optoisolator and imports the regeneration resonance by the incident seed light import
In enlarged cavity, the incident seed light imported in the regeneration resonance enlarged cavity carries out resonance and puts in the regeneration resonance enlarged cavity
Greatly, its depolarization is compensated through first quarter-wave plate, the concavees lens compensate thermal lensing effect, and by the LCD Controlling
Modulator and LCD Controlling modulator drive light spot shape in its resonant process, are switched through the pulse choice and controlled, will
Resonance enlarged cavity is regenerated described in the seed light-output of amplification, light is amplified by described outgoing after being totally reflected through 45 ° of total reflective mirrors
Outlet output.
Improved as of the invention further, the pulse choice switch is by the second quarter-wave plate, general gram of box and general
Gram box high drive composition, when the incident seed light is amplified in described regeneration resonance enlarged cavity, by adjusting described the
Moment and high pressure width that two quarter-wave plates and general gram of box are added high pressure, the resonance of the incident seed light of control amplify number of times and
To the moment that resonance enlarged cavity is regenerated described in outgoing.
Used as further improvement of the invention, the beam expander is by concavees lens and convex lens group into it is described to expand multiple
The curvature of convex lens is amplified divided by the business obtained by the curvature of the concavees lens, the incident seed light in described regeneration resonance
When chamber is amplified, cause that vibration hot spot expands by the beam expander, be easy to regulation of the LCD Controlling modulator to hot spot.
Used as further improvement of the invention, the incident seed light is put with by the regeneration of the regeneration resonance enlarged cavity
Big light forms 180 ° of angles.
Improved as of the invention further, the chamber of the regeneration resonance enlarged cavity is long be adjacent locked mode seed optical pulse between
The integral multiple long away from corresponding cavity, wherein, multiple is the selection locked mode seed optical pulse by after the regeneration resonance enlarged cavity
The number of regenerative amplification output.
Used as further improvement of the invention, the liquid crystal spatial modulator changes in the incident seed hot spot of regenerative amplification
The reflectivity of diverse location, realizes the regulation to hot spot, and the flat-top hot spot or U-shaped hot spot for amplifying are easy in acquisition.
As further improvement of the invention, the incidence after second polarizer and the 3rd polarizer reflection
The polarization state of seed light is consistent with the polarization state of the liquid crystal spatial modulator.
Improved as of the invention further, first polarizer, second polarizer, the 3rd polarizer,
It is 1/2nd wave plates, first quarter-wave plate, second quarter-wave plate, 45 ° of total reflective mirrors, described recessed
Mirror, the convex lens, the LD pumped laser crvstals module and the liquid crystal spatial modulator are plated with and the incident seed
The wave band of light consistent anti-reflection film or highly reflecting films.
Beneficial effects of the present invention are：Weak seed optical pulse is realized into regenerative amplification there is provided a kind of, with very high
Multiplication factor, and shaping is spatially carried out to light pulse, effectively suppress by the too strong Self-focusing for causing of light intensity, it is to avoid
The damage of component, can realize the laser output of more power, be that follow-up laser power is amplified and done pre- place well
Reason.Specifically：
1st, using optoisolator, the isolation and amplifier of incident seed light and regenerative amplification light is realized.Incident seed optical pulse
Imported in regeneration resonance enlarged cavity through optoisolator and realize regenerative amplification, energy drastically amplifies, the amplification light pulse warp of output
Optoisolator is isolated with incident light pulse light path and is separated, and amplifying light exit from outgoing through 45 ° of total reflective mirrors reflections exports.
2nd, using regeneration resonance enlarged cavity, can by faint seed optical pulse being amplified drastically.
3rd, ensure that the hot spot at the stability and liquid crystal spatial modulator of resonator is sufficiently large, the hot spot of each component
It is moderate.
4th, using beam expander, the expansion that hot spot is vibrated in chamber is realized, improves the modulation of follow-up liquid crystal spatial modulator
Ability.
5th, using liquid crystal spatial modulator, realize to vibrating hot spot modulation reshaping in chamber, effectively inhibit Gauss light
The self-focusing efficiency of beam, it is to avoid the damage of component.
Brief description of the drawings
Fig. 1 is a kind of casing left plate schematic diagram of liquid crystal spatial modulation regenerative amplifier described in the embodiment of the present invention；
Fig. 2 is a kind of casing right plate schematic diagram of liquid crystal spatial modulation regenerative amplifier described in the embodiment of the present invention；
Fig. 3 is that a kind of box house light path of liquid crystal spatial modulation regenerative amplifier described in the embodiment of the present invention is illustrated
Figure.
In figure,
1st, optoisolator；2nd, resonance enlarged cavity is regenerated；3rd, 45 ° of total reflective mirrors；4th, incident seed light import；5th, light is amplified in outgoing
Outlet；11st, the first polarizer；12nd, Faraday rotator；13rd, 1/2nd wave plate；21st, the second polarizer；22nd, pulse choice
Switch；23rd, 0 ° of total reflective mirror；24th, the 3rd polarizer；25th, LD pumped laser crvstals module；26th, the first quarter-wave plate；27、
Concavees lens；28th, beam expander；29th, liquid crystal spatial modulator and its driving；221st, the second quarter-wave plate；222nd, general gram of box is high
Pressure drives；223rd, general gram of box；281st, concavees lens；282nd, convex lens；291st, liquid crystal spatial modulator；292nd, liquid crystal spatial modulator
Drive.
Specific embodiment
The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.
Embodiment 1, as Figure 1-3, a kind of liquid crystal spatial modulation regenerative amplifier described in the embodiment of the present invention, bag
Include：
Casing, its left plate is provided with incident seed light import 4, and casing right plate is provided with outgoing and amplifies light exit 5；
Optical module, it is arranged in casing, including optoisolator 1, regeneration resonance enlarged cavity 2 and 45 ° of total reflective mirrors 3；
Wherein, optoisolator 1 is included in the first polarizer 11, Faraday rotator 12 and two points set gradually in light path
One of wave plate 13；
Regeneration resonance enlarged cavity 2 includes that the second polarizer 21, pulse choice switchs 22,0 ° of total reflective mirror 23, the 3rd polarizer
24th, LD pumped laser crvstals module 25, the first quarter-wave plate 26, concavees lens 27, beam expander 28, liquid crystal spatial modulator and
It drives 29；
Incident seed light sequentially passes through optoisolator 1 and imports in regeneration resonance enlarged cavity 2 by incident seed light import 4,
The incident seed light imported in regeneration resonance enlarged cavity 2 carries out resonance amplification in regeneration resonance enlarged cavity 2, through the one or four/
One wave plate 26 compensates its depolarization, the compensation thermal lensing effect of concavees lens 27, and is modulated by LCD Controlling modulator 292 and LCD Controlling
Device drives 291 to regulate and control light spot shape in its resonant process, is controlled through pulse selecting switch 22, the seed light-output regeneration that will amplify
Resonance enlarged cavity 2, amplifies light exit 5 and exports after being totally reflected through 45 ° of total reflective mirrors 3 by outgoing.
Wherein, pulse choice switch 22 is by the second quarter-wave plate 221, general gram of box 223 and general gram of box high drive 222
Composition, when incident seed light is amplified in regeneration resonance enlarged cavity 2, by adjusting the second quarter-wave plate 221 and general gram of box
223 moment for being added high pressure and high pressure width, the resonance of the incident seed light of control amplify number of times and amplify to outgoing regeneration resonance
The moment in chamber 2.
Beam expander 28 is made up of concavees lens 281 and convex lens 282, expand multiple be convex lens 282 curvature divided by recessed
Business obtained by the curvature of mirror 281, incident seed light causes vibration when the amplification of resonance enlarged cavity 2 is regenerated by beam expander 28
Hot spot expands, and is easy to regulation of the LCD Controlling modulator 292 to hot spot.
Incident seed light forms 180 ° of angles with by the light of the regenerative amplification of regeneration resonance enlarged cavity 2.
Regeneration resonance enlarged cavity 2 is designed using LASCAD resonators simulation software, it is ensured that liquid crystal spatial modulator 292
The spot size at place is sufficiently large, and the hot spot in chamber elsewhere is moderate.
It is adjacent locked mode seed optical pulse spacing corresponding cavity integral multiple long that the chamber of regeneration resonance enlarged cavity 2 is long, wherein, times
Number is selection locked mode seed optical pulse by regenerating the number that regenerative amplification is exported after resonance enlarged cavity 2.
The reflectivity of diverse location in the incident seed hot spot of the change regenerative amplification of liquid crystal spatial modulator 292, it is right to realize
The flat-top hot spot or U-shaped hot spot for amplifying are easy in the regulation of hot spot, acquisition.
The polarization state of the incident seed light after the second polarizer 21 and the 3rd polarizer 24 reflect is adjusted with liquid crystal spatial
The polarization state of device processed 292 is consistent.
Incident seed light is amplified in the resonance of regeneration resonance enlarged cavity 2, and liquid crystal spatial modulator is modulated in 292 its amplification process
Light spot shape, by its number of oscillation in regeneration resonance enlarged cavity of the control of pulse choice switch 22, when being amplified to ceiling capacity
When, light is amplified in selection output.
Wherein, the first polarizer 11, the second polarizer 21, the 3rd polarizer 24,1/2nd wave plates the 13, the 1st/
One wave plate 26,221,45 ° of total reflective mirrors 3 of the second quarter-wave plate, concavees lens 281, convex lens 282, LD pumped laser crvstal moulds
Block 25 and liquid crystal spatial modulator 292 are plated with the anti-reflection film or highly reflecting films consistent with the wave band of incident seed light.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of liquid crystal spatial modulates regenerative amplifier, it is characterised in that including：
Casing, its left plate is provided with incident seed light import (4), and the casing right plate is provided with outgoing and amplifies light exit
(5)；
Optical module, it is arranged in the casing, including optoisolator (1), regeneration resonance enlarged cavity (2) and 45 ° of total reflective mirrors
(3)；
Wherein, the optoisolator (1) is included in the first polarizer (11), the Faraday rotator (12) set gradually in light path
And 1/2nd wave plates (13)；
Regeneration resonance enlarged cavity (2) includes the second polarizer (21), pulse choice switch (22), 0 ° of total reflective mirror (23), the
Three polarizers (24), LD pumped laser crvstals module (25), the first quarter-wave plate (26), concavees lens (27), beam expander
(28), liquid crystal spatial modulator and its driving (29)；
It is humorous that incident seed light sequentially passes through the optoisolator (1) the importing regeneration by the incident seed light import (4)
Shake in enlarged cavity (2), the incident seed light imported in regeneration resonance enlarged cavity (2) is in regeneration resonance enlarged cavity (2)
In carry out resonance amplification, compensate its depolarization through first quarter-wave plate (26), the concavees lens (27) compensate thermal lens
Effect, and drive (291) to regulate and control hot spot in its resonant process by the LCD Controlling modulator (292) and LCD Controlling modulator
Shape, controls through pulse choice switch (22), regeneration resonance enlarged cavity (2) described in the seed light-output that will amplify, through institute
Light exit (5) output is amplified by described outgoing after stating 45 ° of total reflective mirror (3) total reflections.
2. liquid crystal spatial according to claim 1 modulates regenerative amplifier, it is characterised in that the pulse choice switch
(22) it is made up of the second quarter-wave plate (221), general gram of box (223) and general gram of box high drive (222), the incident seed
When light amplifies in described regeneration resonance enlarged cavity (2), by adjusting second quarter-wave plate (221) and general gram of box
(223) moment for being added high pressure and high pressure width, the resonance of the incident seed light of control amplify number of times and humorous to being regenerated described in outgoing
Shake moment of enlarged cavity (2).
3. liquid crystal spatial according to claim 1 modulates regenerative amplifier, it is characterised in that the beam expander (28) is by expanding
Beam device concavees lens (281) and beam expander convex lens (282) are constituted, and expand the curvature that multiple is the beam expander convex lens (282)
Divided by the business obtained by the curvature of the beam expander concavees lens (281), the incident seed light is amplified in described regeneration resonance
When chamber (2) is amplified, by the beam expander (28) such that vibration hot spot expands, be easy to the LCD Controlling modulator (292) right
The regulation of hot spot.
4. liquid crystal spatial according to claim 1 modulates regenerative amplifier, it is characterised in that：The incident seed light and warp
The regenerative amplification light for crossing regeneration resonance enlarged cavity (2) forms 180 ° of angles.
5. liquid crystal spatial according to claim 1 modulates regenerative amplifier, it is characterised in that：The regeneration resonance enlarged cavity
(2) it is adjacent locked mode seed optical pulse spacing corresponding cavity integral multiple long that chamber is long, wherein, multiple is the selection locked mode seed
Light pulse is by regeneration resonance enlarged cavity (2) number that regenerative amplification is exported afterwards.
6. liquid crystal spatial according to claim 1 modulates regenerative amplifier, it is characterised in that：The liquid crystal spatial modulator
(292) change the reflectivity of diverse location in the incident seed hot spot of regenerative amplification, realize the regulation to hot spot, acquisition is easy to put
Big flat-top hot spot or U-shaped hot spot.
7. liquid crystal spatial according to claim 1 modulates regenerative amplifier, it is characterised in that：By second polarizer
(21) polarization state and the liquid crystal spatial modulator (292) of the incident seed light and after the 3rd polarizer (24) reflection
Polarization state is consistent.
8. the liquid crystal spatial according to any one of claim 1-7 modulates regenerative amplifier, it is characterised in that described first
Polarizer (11), second polarizer (21), the 3rd polarizer (24), 1/2nd wave plates (13), the described 1st
The modulation of/mono- wave plate (26), 45 ° of total reflective mirrors (3), the LD pumped laser crvstals module (25) and the liquid crystal spatial
Device (292) is plated with the anti-reflection film or highly reflecting films consistent with the wave band of the incident seed light.
9. liquid crystal spatial according to claim 2 modulates regenerative amplifier, it is characterised in that second quarter-wave
Piece (221) is coated with the anti-reflection film or highly reflecting films consistent with the wave band of the incident seed light.
10. liquid crystal spatial according to claim 3 modulates regenerative amplifier, it is characterised in that the beam expander concavees lens
And the beam expander convex lens (282) are plated with anti-reflection film or the high reflection consistent with the wave band of the incident seed light (281)
Film.
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|---|---|---|---|
| CN201510206354.6A CN104765176B (en) | 2015-04-27 | 2015-04-27 | A kind of liquid crystal spatial modulates regenerative amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206354.6A CN104765176B (en) | 2015-04-27 | 2015-04-27 | A kind of liquid crystal spatial modulates regenerative amplifier |
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| CN104765176B true CN104765176B (en) | 2017-06-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572358A (en) * | 1994-12-16 | 1996-11-05 | Clark-Mxr, Inc. | Regenerative amplifier incorporating a spectral filter within the resonant cavity |
| CN101750836A (en) * | 2009-12-25 | 2010-06-23 | 中山大学 | Ultra-short-pulse laser frequency-doubled continuous attenuator |
| CN102623881A (en) * | 2012-03-22 | 2012-08-01 | 北京国科世纪激光技术有限公司 | Adjustment method for laser output energy |
| CN103296577A (en) * | 2013-05-22 | 2013-09-11 | 北京工业大学 | kHz green ray picosecond laser device used for satellite distance measurement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7286241B2 (en) * | 1999-06-24 | 2007-10-23 | Lockheed Martin Corporation | System and method for high-speed laser detection of ultrasound |
-
2015
- 2015-04-27 CN CN201510206354.6A patent/CN104765176B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572358A (en) * | 1994-12-16 | 1996-11-05 | Clark-Mxr, Inc. | Regenerative amplifier incorporating a spectral filter within the resonant cavity |
| CN101750836A (en) * | 2009-12-25 | 2010-06-23 | 中山大学 | Ultra-short-pulse laser frequency-doubled continuous attenuator |
| CN102623881A (en) * | 2012-03-22 | 2012-08-01 | 北京国科世纪激光技术有限公司 | Adjustment method for laser output energy |
| CN103296577A (en) * | 2013-05-22 | 2013-09-11 | 北京工业大学 | kHz green ray picosecond laser device used for satellite distance measurement |
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