CN108493747A - 2 μm of high-energy pure-tone pulse lasers based on optical fiber solid Cascaded amplification - Google Patents
2 μm of high-energy pure-tone pulse lasers based on optical fiber solid Cascaded amplification Download PDFInfo
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- CN108493747A CN108493747A CN201810202065.2A CN201810202065A CN108493747A CN 108493747 A CN108493747 A CN 108493747A CN 201810202065 A CN201810202065 A CN 201810202065A CN 108493747 A CN108493747 A CN 108493747A
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- 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
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
- H01S3/1024—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping for pulse generation
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- 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
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
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- 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
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
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- 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
- H01S3/10084—Frequency control by seeding
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- 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
- H01S3/1068—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 an acousto-optical device
Abstract
A kind of 2 μm of high-energy pure-tone pulse lasers based on optical fiber solid Cascaded amplification.It using the continuous single-frequency seed source of low-power as front end, uses acousto-optic modulator by continuous single-frequency seed source copped wave for pulsed light, pulse repetition, pulsewidth and waveform after copped wave is flexibly controlled by controlling driving repetition, pulsewidth and the waveform of acousto-optic modulator.Subsequently pass through polarization maintaining optical fibre amplifier respectively and solid amplifier realizes the energy amplification of pure-tone pulse laser, it is final to realize 2 μm of high-energy pure-tone pulse laser outputs.The continuous single-frequency seed source single-frequency of low-power is stable and reliable for performance, strong antijamming capability；Prime uses polarization maintaining optical fibre amplifier, effectively improves the amplifying power of small signal；Rear class is amplified using solid, is easy to generate the pure-tone pulse laser output of high pulse energy and high-peak power.The laser structure is simple, system is stable, Parameter adjustable, not only adapts to general operating environment requirements, moreover it is possible to adapt to airborne and spaceborne requirement.
Description
Technical field
The invention belongs to 2 μm of field of lasers, especially a kind of 2 μm of high-energy single-frequency based on optical fiber solid Cascaded amplification
Pulse laser.
Background technology
2 μm of lasers are in the necks such as air and environmental monitoring, laser medicine, laser precision distance measuring, photoelectronic warfare, laser radar
Domain is widely used.In Doppler anemometry or the laser radar field of remote sensing atmospheric concentration, 2 μm of lasers are sent out as it
Penetrate source, the parameters such as line width, frequency stability, single pulse energy, beam quality directly determine laser radar measurement accuracy and
Detectivity.Therefore, the development of narrow linewidth, high-energy, high performance 2 μm of pure-tone pulse lasers is to improving laser radar system
Measurement accuracy, spatial and temporal resolution, stability etc. be of great importance.
For 2 μm of lasers of single-frequency high-energy, common technology means are to realize pure-tone pulse using injection seeded oscillator
Then output uses solid amplifier to realize high-energy output.The technology is achieving huge progress over the past several decades, but it is former
Reason determines some inevitable disadvantages, is mainly reflected in following two points：
One is the frequency stability of laser pulse is determined by the frequency stability of driven chamber longitudinal mode, and due to driven chamber
There are one random shakes relative to seed light frequency for longitudinal mode frequency, to make its frequency stability compared to the frequency of seed light
Stability is poor；
The second is seed injection laser will realize that narrow linewidth exports, required pulsewidth is wider, and correspondence requires resonator long
It is longer, cause laser structure complicated, stability is poor.
Invention content
It is an object of the invention to overcome the above-mentioned prior art, provide a kind of based on optical fiber solid Cascaded amplification
2 μm of high-energy pure-tone pulse lasers.Spectral characteristic is determined by the seed laser of low-power in the laser, even if this makes it
In complicated external environment, good single-frequency characteristic can be still kept.And the laser can flexibly control output arteries and veins
The parameters such as repetition, pulsewidth, the waveform of punching, to meet the implacable application need of different, particularly seed injection laser
It asks.The laser structure is simple, system is stable, Parameter adjustable, not only adapts to general operating environment requirements, moreover it is possible to adaline
It carries and spaceborne requirement.
The present invention basic thought be：
Using low-power single-frequency seed source as front end, becomes pulsed light after acousto-optic modulator copped wave, pass through respectively
Polarization maintaining optical fibre amplifier and solid amplifier realize the energy amplification of pure-tone pulse laser, finally realize 2 μm of high-energy single-frequency arteries and veins
Impulse light output.Low-power single-frequency seed source single-frequency is stable and reliable for performance, strong antijamming capability；Prime uses fiber amplifier,
It can effectively improve the amplifying power of small signal；Rear class is amplified using solid, has been played Solid State Laser and has been easy to generate high impulse energy
The advantage of amount and high-peak power effectively avoids the nonlinear effect for being easier to occur in fiber amplifier under high power, to realize 2
μm single-frequency, high energy laser pulse output.
Technical solution of the invention is as follows：
A kind of 2 μm of high-energy pure-tone pulse lasers based on optical fiber solid Cascaded amplification, feature are that its structure includes
Single-frequency seed source, fiber amplifier, solid amplifier three parts：
The single-frequency seed source includes single-frequency seed laser, and is set gradually along the outbound course of the seed laser
One fibre optic isolater, the first bundling device, the first gain fibre, the second fibre optic isolater, above-mentioned device head and the tail welding successively.First
The pumping input terminal welding of the output end in pumped fiber source and the first bundling device；
The fiber amplifier sets gradually optical fiber acousto-optic modulator, the second bundling device, second along laser transmission direction
Gain fibre, optical fiber filtering isolator, third bundling device, third gain fibre, fiber optic collimator mirror.Above-mentioned device head and the tail melt successively
It connects.The pumping input terminal welding of the output end and the second bundling device in the second pumped fiber source, the output end in third pumped fiber source
With the pumping input terminal welding of third bundling device；The tail portion of second fibre optic isolater of the single-frequency seed source and the light
The head welding of the optical fiber acousto-optic modulator of fiber amplifier；
The solid amplifier sets gradually the first speculum, the sky with light path placement at 45 ° along laser transmission direction
Between acousto-optic modulator, with the second speculum of light path placement at 45 °, the first space isolator, the first beam-expanding system, the one or two point
One of wave plate, end pump gain crystal, the one 0 ° of speculum, it is the one 45 ° of prism mirror, anti-with the third of light path placement at 45 °
Mirror, second space isolator, the second beam-expanding system, the second half wave plate are penetrated, side pumps gain crystal, the 2nd 0 ° of speculum,
2nd 45 ° of prism mirror.Wherein the output laser of solid end pump pumping source passes through coupling mirror, the one 0 ° of speculum from end respectively
Face enters end pump gain crystal.The output laser that solid side pumps pumping source pumps gain crystal from side approaching side.
The seed laser exports single-frequency continuous low power laser.
The fibre optic isolater prevents amplification Laser feedback damage seed laser.
Continuous seed light copped wave is pulsed light by the optical fiber acousto-optic modulator.
First gain fibre, the second gain fibre and the third gain fibre is thulium doped double clad, holmium or thulium
Holmium co-doped fiber.
The optical fiber filtering isolator prevents from subsequently amplifying Laser feedback damage front-end devices, while narrowing laser simultaneously
Pulse line width.
The space acousto-optic modulator setting door switch carries out copped wave, eliminates the shadow that pulse substrate amplifies subsequent solid
It rings.
The end pump gain crystal and side pump gain crystal is the gain crystal that thulium doped, holmium or thulium holmium are co-doped with.
The first half wave plate and the second half wave plate is used for adjusting the polarization state of laser.
The present invention has the following advantages：
1, the spectrum property of the laser is determined by seed laser, though in complicated external environment, laser according to
Good single-frequency characteristic can so be kept.
2, the pulse repetition of the laser, pulsewidth, the parameters such as waveform can be controlled flexibly, so as to meet different answer
Use demand.
3, the laser structure is simple, system is stable, Parameter adjustable, not only adapts to general operating environment requirements, also
Adapt to airborne and spaceborne requirement.
Description of the drawings
Fig. 1 is the light path schematic diagram of 2 μm of high-energy pure-tone pulse lasers the present invention is based on optical fiber solid Cascaded amplification.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and examples, but the protection model of the present invention should not be limited with this
It encloses.
Referring to Fig.1, Fig. 1 is the light of 2 μm of high-energy pure-tone pulse lasers the present invention is based on optical fiber solid Cascaded amplification
Road schematic diagram.As seen from the figure, 2 μm of high-energy pure-tone pulse lasers of the invention include single-frequency seed source, fiber amplifier, solid
Amplifier three parts：
The single-frequency seed source includes single-frequency seed laser 1-1, along seed laser 1-1 outbound course successively
First fibre optic isolater 1-2, the first bundling device 1-4, the first gain fibre 1-5, the second fibre optic isolater 1-6 are set.Above-mentioned device
The welding successively of part head and the tail.The pumping input terminal welding of the output end and the first bundling device 1-4 of first pumped fiber source 1-3；
The fiber amplifier sets gradually optical fiber acousto-optic modulator 2-1, the second bundling device 2- along laser transmission direction
3, the second gain fibre 2-4, optical fiber filtering isolator 2-5, third bundling device 2-7, third gain fibre 2-8, fiber optic collimator mirror
2-9.Above-mentioned device head and the tail welding successively.The pumping input terminal of the output end and the second bundling device 2-3 of second pumped fiber source 2-2
Welding, the output end of third pumped fiber source 2-6 and the pumping input terminal welding of third bundling device 2-7；The single-frequency seed
The head welding of the tail portion of the second fibre optic isolater 1-6 in source and the optical fiber acousto-optic modulator 2-1 of the fiber amplifier；
The solid amplifier along laser transmission direction set gradually with the first speculum 3-1 of light path placement at 45 °,
Space acousto-optic modulator 3-2, it is expanded with the second speculum 3-3 of light path placement at 45 °, the first space isolator 3-4, first and is
Unite 3-5, the first half wave plate 3-6, end pump gain crystal 3-7, the one 0 ° of speculum 3-8, the one 45 ° of prism mirror 3-
11, with the third speculum 3-12 of light path placement at 45 °, second space isolator 3-13, the second beam-expanding system 3-14, the two or two
/ mono- wave plate 3-15, side pump gain crystal 3-16, the 2nd 0 ° of speculum 3-17, the 2nd 45 ° of prism mirror 3-19.It is wherein solid
The output laser of body end pump pumping source 3-9 passes through coupling mirror 3-10, the one 0 ° of speculum 3-8 and enters end pump increasing from end face respectively
Beneficial crystal 3-7.The output laser that solid side pumps pumping source 3-18 pumps gain crystal 3-16 from side approaching side.
The single-frequency seed laser 1-1 exports single-frequency continuous low power laser.
The first fibre optic isolater 1-2 and the second fibre optic isolater 1-6 prevents amplification Laser feedback damage seed from swashing
Light device.
Continuous seed light copped wave is pulsed light by the optical fiber acousto-optic modulator 2-1.
First gain fibre 1-5, the second gain fibre 2-4 and the third gain fibre 2-8 be double clad it is thulium doped,
Holmium or Tm Ho co doped fiber.
The optical fiber filtering isolator 2-5 prevents from subsequently amplifying Laser feedback damage front-end devices, while narrowing laser
Pulse line width.
The space acousto-optic modulator 3-2 setting door switch carries out copped wave, eliminates pulse substrate and amplifies to subsequent solid
Influence.
The end pump gain crystal 3-7 and side pump gain crystal 3-16 is the gain that thulium doped, holmium or thulium holmium are co-doped with
Crystal.
The first half wave plate 3-6 and the second half wave plate 3-15 is used for adjusting the polarization state of laser.
Here is the parameter of a specific embodiment of the invention：
Single-frequency seed source 1-1 uses DFB seed lasers, output power 5mW, line width to be less than 3MHz, and wavelength is 2 μm.
First gain fibre 1-5 is 6 μm using thulium doubly clad optical fiber, core diameter is mixed, numerical aperture 0.22, and inner cladding diameter is
125μm.First pumped fiber source 1-3 uses centre wavelength continuously to be pumped for the laser diode of 793nm, output power 2W.
Second gain fibre 2-4 is 10 μm using thulium doubly clad optical fiber, core diameter is mixed, numerical aperture 0.14, and inner cladding diameter is
125μm.Third gain fibre 2-8 is 25 μm using thulium doubly clad optical fiber, core diameter is mixed, numerical aperture 0.09, inner cladding
A diameter of 300 μm.Second pumped fiber source 2-2 and third pumped fiber source 2-6 use centre wavelength for the pulse pumping of 793nm
Laser diode, repetition is set as 10Hz, and pumping pulse width is 1ms.When the second pumped fiber source 2-2 energy be 4.2mJ,
When third pumped fiber source 2-6 energy is 12mJ, it is 0.15mJ that fiber amplifier, which exports energy,.The end of solid amplifier pumps gain
Crystal 3-7 uses rodlike Tm:Ho:LuLF crystal, wherein Tm adulterate 6%, Ho doping 0.5%, a diameter of 3mm, length 15mm.
Solid end pumps the 793nm modules that pumping source 3-9 uses fiber coupling output, 400 μm of optical fiber core diameter, numerical aperture NA<0.17, peak
It is worth power 600W, pulse width 1ms, repetition 10Hz.Solid side pumps pumping source 3-18 using maximum output peak power 100W, arteries and veins
Rush the 793nm Bar items of width 1ms.In order to improve quality for outputting laser beam and laser energy, using laser diode side
Pump rhabdolith.Five groups are radially evenly distributed, and every group has 4 bar, and pump energy is 2J in total.Side pumps gain crystal 3-16
Using rodlike Tm:Ho:LuLF crystal, wherein Tm adulterate 6%, Ho doping 0.5%.Have between typical list Bar long 10mm, Bar
The gap of 1mm, booster (rod) length are 45mm, a diameter of 4.5mm.The single-frequency laser that final exportable pulse energy is 100mJ is defeated
Go out.
The laser gain medium of the present invention is in addition to Tm, Ho:Outside LLF, it is brilliant that other a variety of thulium doped, holmium laser also can be used
Body；The LD pumping sources for accommodating different crystal centre wavelength may be used in corresponding pumping source.It, can be according to reality according to the above
Border needs, and is set out with the mentality of designing and design principle of the present invention, changes the series of fiber amplifier and solid amplifier, obtained
2 μm of pulse laser outputs of single-frequency of higher energy.
Claims (7)
1. a kind of 2 μm of high-energy pure-tone pulse lasers based on optical fiber solid Cascaded amplification are characterized in that its structure includes single
Frequency seed source, fiber amplifier, solid amplifier three parts：
The single-frequency seed source includes single-frequency seed laser (1-1), along the seed laser (1-1) outbound course successively
Be head and the tail welding the first fibre optic isolater (1-2), the first bundling device (1-4), the first gain fibre (1-5) and the second optical fiber every
From device (1-6), the pumping input terminal welding of the output end and the first bundling device (1-4) in the first pumped fiber source (1-3)；
The fiber amplifier is closed along the optical fiber acousto-optic modulator (2-1) that laser transmission direction is head and the tail welding successively, second
Beam device (2-3), the second gain fibre (2-4), optical fiber filtering isolator (2-5), third bundling device (2-7), third gain fibre
The pumping of (2-8) and fiber optic collimator mirror (2-9), the output end and the second bundling device (2-3) in the second pumped fiber source (2-2) inputs
Hold welding, the output end in third pumped fiber source (2-6) and the pumping input terminal welding of third bundling device (2-7)；The list
The tail portion of the second fibre optic isolater (1-6) of frequency seed source and the optical fiber acousto-optic modulator (2-1) of the fiber amplifier
Head welding；
The solid amplifier is set gradually and the first speculum of light path placement at 45 ° (3-1), sky along laser transmission direction
Between acousto-optic modulator (3-2), expand with the second speculum (3-3) of light path placement at 45 °, the first space isolator (3-4), first
Beam system (3-5), the first half wave plate (3-6), end pump gain crystal (3-7), the one 0 ° of speculum (3-8), the one 45 °
Prism mirror (3-11) and the third speculum (3-12) of light path placement at 45 °, second space isolator (3-13), second
Beam-expanding system (3-14), the second half wave plate (3-15), side pump gain crystal (3-16), the 2nd 0 ° of speculum (3-17),
2nd 45 ° of prism mirror (3-19).The output laser that solid end pumps pumping source (3-9) passes through coupling mirror (3-10), the respectively
One 0 ° of speculums (3-8) from end face enter end pump gain crystal (3-7), solid side pump pumping source (3-18) output laser from
Side approaching side pump gain crystal (3-16).
2. 2 μm of high-energy pure-tone pulse lasers according to claim 1 based on optical fiber solid Cascaded amplification, feature
It is single-frequency seed laser (1-1) the output single-frequency continuous low power laser.
3. 2 μm of high-energy pure-tone pulse lasers according to claim 1 based on optical fiber solid Cascaded amplification, feature
It is that continuous seed light copped wave is pulsed light by the optical fiber acousto-optic modulator (2-1).
4. 2 μm of high-energy pure-tone pulse lasers according to claim 1 based on optical fiber solid Cascaded amplification, feature
Be the first gain fibre (1-5), the second gain fibre (2-4) and the third gain fibre (2-8) for thulium doped, holmium or
The gain fibre that person's thulium holmium is co-doped with.
5. 2 μm of high-energy pure-tone pulse lasers according to claim 1 based on optical fiber solid Cascaded amplification, feature
It is that the optical fiber filtering isolator (2-5) prevents from subsequently amplifying Laser feedback damage front-end devices, while narrows laser arteries and veins
It breasts the tape width.
6. 2 μm of high-energy pure-tone pulse lasers according to claim 1 based on optical fiber solid Cascaded amplification, feature
It is that space acousto-optic modulator (3-2) the setting door switch carries out copped wave, eliminates what pulse substrate amplified subsequent solid
It influences.
7. 2 μm of high-energy pure-tone pulse lasers according to claim 1 based on optical fiber solid Cascaded amplification, feature
It is that the end pump gain crystal (3-7) and side pump gain crystal (3-16) are the gain that thulium doped, holmium or thulium holmium are co-doped with
Crystal.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129922A (en) * | 2019-12-09 | 2020-05-08 | 中国科学院上海光学精密机械研究所 | Large-energy hundred-ns single-frequency laser amplification system with pulse width of 1.0 mu m |
| CN112636149A (en) * | 2020-11-08 | 2021-04-09 | 罗根激光科技（武汉）有限公司 | mJ power amplifier suitable for 1064nm subnanosecond pulse |
| CN113258422A (en) * | 2021-07-14 | 2021-08-13 | 武汉锐科光纤激光技术股份有限公司 | Seed source of pulse optical fiber laser and pulse adjusting method |
| CN113258424A (en) * | 2021-05-11 | 2021-08-13 | 天津工业大学 | Dual-wavelength pulse synchronous Tm, Ho, LLF passive Q-switched solid laser |
| CN113809620A (en) * | 2021-09-06 | 2021-12-17 | 山东大学 | Large-energy long-pulse 1-micrometer single-frequency nanosecond laser for laser coherent wind-finding radar |
| CN114649735A (en) * | 2022-03-14 | 2022-06-21 | 山东大学 | High-signal-to-noise-ratio ultrafast laser regeneration amplifying device and working method thereof |
| CN115117721A (en) * | 2022-06-28 | 2022-09-27 | 中国科学院上海光学精密机械研究所 | Narrow linewidth multi-wavelength nanosecond single-frequency pulse laser |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111129922A (en) * | 2019-12-09 | 2020-05-08 | 中国科学院上海光学精密机械研究所 | Large-energy hundred-ns single-frequency laser amplification system with pulse width of 1.0 mu m |
| CN111129922B (en) * | 2019-12-09 | 2021-05-04 | 中国科学院上海光学精密机械研究所 | Large-energy hundred-ns single-frequency laser amplification system with pulse width of 1.0 mu m |
| CN112636149A (en) * | 2020-11-08 | 2021-04-09 | 罗根激光科技（武汉）有限公司 | mJ power amplifier suitable for 1064nm subnanosecond pulse |
| CN113258424A (en) * | 2021-05-11 | 2021-08-13 | 天津工业大学 | Dual-wavelength pulse synchronous Tm, Ho, LLF passive Q-switched solid laser |
| CN113258422A (en) * | 2021-07-14 | 2021-08-13 | 武汉锐科光纤激光技术股份有限公司 | Seed source of pulse optical fiber laser and pulse adjusting method |
| CN113258422B (en) * | 2021-07-14 | 2021-10-22 | 武汉锐科光纤激光技术股份有限公司 | Seed source of pulse optical fiber laser and pulse adjusting method |
| CN113809620A (en) * | 2021-09-06 | 2021-12-17 | 山东大学 | Large-energy long-pulse 1-micrometer single-frequency nanosecond laser for laser coherent wind-finding radar |
| CN114649735A (en) * | 2022-03-14 | 2022-06-21 | 山东大学 | High-signal-to-noise-ratio ultrafast laser regeneration amplifying device and working method thereof |
| CN114649735B (en) * | 2022-03-14 | 2023-06-02 | 山东大学 | Ultra-fast laser regeneration amplifying device with high signal-to-noise ratio and working method thereof |
| CN115117721A (en) * | 2022-06-28 | 2022-09-27 | 中国科学院上海光学精密机械研究所 | Narrow linewidth multi-wavelength nanosecond single-frequency pulse laser |
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