CN206878307U - A kind of high pulse energy optical fiber laser light path applied to coherent wind radar system - Google Patents
A kind of high pulse energy optical fiber laser light path applied to coherent wind radar system Download PDFInfo
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- CN206878307U CN206878307U CN201720522841.8U CN201720522841U CN206878307U CN 206878307 U CN206878307 U CN 206878307U CN 201720522841 U CN201720522841 U CN 201720522841U CN 206878307 U CN206878307 U CN 206878307U
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Abstract
The utility model belongs to optical fiber laser field, more particularly to a kind of high pulse energy optical fiber laser light path applied to coherent wind radar system, including the continuous single-frequency polarization-maintaining laser using optical fiber composite chamber structure, the one-level EDFA Erbium-Doped Fiber Amplifier for being arranged on the acousto-optic modulator of the output end of continuous single-frequency polarization-maintaining laser and being arranged on after acousto-optic modulator, two level EDFA Erbium-Doped Fiber Amplifier and three-level EDFA Erbium-Doped Fiber Amplifier, one-level EDFA Erbium-Doped Fiber Amplifier is forward pumping fibre core structure for amplifying, two level EDFA Erbium-Doped Fiber Amplifier and three-level EDFA Erbium-Doped Fiber Amplifier are forward pumping double clad structure for amplifying, acousto-optic modulator modulated triangular wave pulse.The utility model generates triangular pulse using suitable signal generator and modulator, this pulse pulse in amplification process will not deform substantially, so as to realize that the laser of high single pulse energy exports, there is very high use value in coherent wind field of radar.
Description
Technical field
The utility model belongs to optical fiber laser field, and in particular to a kind of high arteries and veins applied to coherent wind radar system
Rush energy optical fiber laser light path.
Background technology
Laser radar has energy round-the-clock earth observation, small by earth background, sky background interference, and has high-resolution
With the advantage such as high sensitivity, can be widely used in environmental monitoring, marine exploration, forest survey, mapping, survey of deep space,
Military Application etc..In addition, laser radar is due to the features such as monochromaticjty is good, high directivity, coherence are good, small volume, in gas
As field is also widely used, can be used for measuring aerosol, cloud, mist, visibility, aerial wind field, greenhouse gases, dirt
Contaminate gas, temperature and humidity change, accurate real time data be not only flight guarantee, and can for study Atmosphere changes,
Weather forecast and establish correct Atmospheric models foundation is provided, to the long-range climate change in the whole world and the cognition of global carbon and pre-
Survey has important directive significance.Doppler's coherent wind radar can measure atmospheric wind, including the information such as wind shear, wind speed.
Using the data of atmospheric wind, the change of air can be obtained, and predict its change, promote the mankind to energy, water, aerosol,
The understanding of chemical and other gaseous substance circles, detection, military environments forecast, the utilization for improving wind energy resources for atmosphere pollution
Efficiency, the security for lifting Aero-Space, improvement climatic study model etc. are significant, the accurate wind of SEQUENCING VERTICAL yardstick
Field, ocean wind field, stratospheric wind field, no matter from civilian or military angle, suffer from extremely important meaning.
Because the light of 1.5um wavelength is relative to eye-safe, therefore the more and more extensive laser radar that is applied to surveys wind system
System.Typical pulse coherence windfinding radar system includes two parts：The acquisition process of high pulse energy optical fiber laser and data.
Wherein, the former is made up of continuous single-frequency polarization-maintaining laser, pulse-modulator and pulse amplifier, and this patent research it is interior
Hold.At present, high light beam quality is obtained, the technology of high energy pulse laser output mainly there are three kinds：Q-regulating technique, mode-locking technique, arteries and veins
Modulated+MOPA technologies.The advantage and disadvantage of three kinds of pulse techniques are as follows：1st, Q-regulating technique：Q-regulating technique is in laser resonator intracavitary
Q-switch is inserted, by the loss of periodically-varied intracavitary, realizes that pulse laser exports, pulse width can reach ns magnitudes.Profit
Higher peak power can be obtained with Q-regulating technique, because the pulse energy that single Q-switched laser obtains is often limited, is wanted
High-power output is obtained, subsequently also needs to amplify by multistage.Other Q-switch also needs to match somebody with somebody special driver, such system
Volume is bigger, has certain limitation for the harsher place of volume requirement；2nd, mode-locking technique：Mode locking pulse optical fiber swashs
Light device is mainly modulated using various factors to the oscillation longitudinal mode of intracavitary, and structure is more complicated, is suitable for the life of ultrashort pulse
Into being generally used for femtosecond or picosecond laser, and the mean power for exporting laser is relatively low.3rd, impulse modulation+MOPA technologies：I.e.
Master oscillation power amplification technology, using the seed light source of certain repetition rate and pulse width as master oscillator, pass through multistage work(
High energy pulse laser output needed for just being obtained after rate amplification.The laser technique scheme spirit of impulse modulation+MOPA structures
It is living, it is compact-sized, it is a kind of ideal chose for realizing high pulse energy, high-peak power laser.In this configuration, pass
The pulses generation of system is generally square-wave pulse (as shown in accompanying drawing 1-1), because the forward position of the pulse in amplification process is preferentially put
Greatly, therefore as the power of amplification pulse laser increases, deformation or even division occurs (as shown in accompanying drawing 1-2) in pulse, now
There is SBS (stimulated Brillouin scattering, being the principal element for limiting high power laser light output), high pulse energy can not be produced
Laser exports.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of high impulse energy applied to coherent wind radar system
Optical fiber laser light path is measured, can realize that impulse waveform pulse in amplification process will not deform substantially, so as to realize pole
The laser output of high single pulse energy.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：
A kind of high pulse energy optical fiber laser light path applied to coherent wind radar system of the present utility model, including
Using the continuous single-frequency polarization-maintaining laser of optical fiber composite chamber structure, the acousto-optic for the output end for being arranged on continuous single-frequency polarization-maintaining laser
Modulator and the one-level EDFA Erbium-Doped Fiber Amplifier, two level EDFA Erbium-Doped Fiber Amplifier and the three-level that are arranged on after acousto-optic modulator are mixed
Bait fiber amplifier, one-level EDFA Erbium-Doped Fiber Amplifier are forward pumping fibre core structure for amplifying, two level EDFA Erbium-Doped Fiber Amplifier and three
Level EDFA Erbium-Doped Fiber Amplifier is forward pumping double clad structure for amplifying, acousto-optic modulator modulated triangular wave pulse.
Preferably, continuous single-frequency polarization-maintaining laser includes the first wavelength division multiplexer, the first erbium-doped fiber, circulator, second
Er-doped fiber, grating, optical splitter, single polarization fiber and the Active Optical Fiber of non-pumping；The Active Optical Fiber of non-pumping passes through first wave
Division multiplexer is coupled into erbium-doped fiber；First wavelength division multiplexer is connected with the first erbium-doped fiber to form amplifier；Second er-doped
Optical fiber is connected with grating to form saturated absorbing body；Circulator is connected to form loop checking installation with optical splitter；Optical splitter passes through single inclined
The optical fiber that shakes is connected with the first wavelength division multiplexer.
Preferably, grating is individually isolated, and is incubated with TEC.
Preferably, signal generator is connected with acousto-optic modulator, after signal generator generation triangular pulse, signal hair
The output end of raw device is connected to the radio-frequency head of acousto-optic modulator by radio frequency line.
Preferably, one-level EDFA Erbium-Doped Fiber Amplifier includes the second wavelength division multiplexer, the first mode pump light source, polarization-maintaining er-doped
Optical fiber and the first isolator, the second wavelength division multiplexer, polarization-maintaining Er-doped fiber and the first isolator are sequentially connected, the first mode pump
Light source is coupled into polarization-maintaining Er-doped fiber by the second wavelength division multiplexer, and the output optical fibre type of one-level EDFA Erbium-Doped Fiber Amplifier is PM
9/125。
Preferably, two level EDFA Erbium-Doped Fiber Amplifier includes the second multimode pump light source, the first multimode pumping of (1+1) × 1 is closed
Beam device, the first erbium-doped fiber, the first cladding pumping stripper and the second isolator, the first multimode pump combiner of (1+1) × 1,
Second erbium-doped fiber, the first cladding pumping stripper and the second isolator are sequentially connected, and the second multimode pump light source passes through first
The multimode pump combiner of (1+1) × 1 is coupled into the first erbium-doped fiber；The output optical fibre type of two level EDFA Erbium-Doped Fiber Amplifier is PM
9/125。
Preferably, three-level EDFA Erbium-Doped Fiber Amplifier include the second multimode pump combiner of (2+1) × 1, the 3rd multimode pumping,
Second gain fibre, the second cladding pumping stripper and the 3rd isolator, the second multimode pump combiner of (2+1) × 1, second increase
Beneficial optical fiber, the second cladding pumping stripper and the 3rd isolator are sequentially connected, and the 3rd multimode is pumped through more than the second (2+1) × 1
Mould pump combiner is coupled into the second gain fibre, and the second gain fibre is PLMA-EYDF-25P/300, and three-level erbium-doped fiber is put
The Transmission Fibers that big device uses is PLMA-GDF-25/300.
Preferably, in addition to mould field adaptation, two level EDFA Erbium-Doped Fiber Amplifier pass through mould with three-level EDFA Erbium-Doped Fiber Amplifier
Field adaptation connection.
There is following beneficial effect using the utility model：
1st, the utility model generates triangular pulse using suitable signal generator and modulator, and this pulse is being put
Big process middle arteries punching will not deform substantially, so as to realize that the laser of high single pulse energy exports, in coherent wind radar
Field has very high use value.
2nd, for continuous single-frequency polarization-maintaining laser in single-frequency performance, line width can be with ＜ 1KHz.
3rd, the single pulse energy of final output pulse laser is up to 800uJ, and also has the space further lifted, impulse wave
Relative to the pulse before amplification very large deformation does not occur for shape.
4th, final pulse laser output has good coherence property and high s/n ratio.
5th, final pulse laser output has good polarization characteristic, and polarization extinction ratio is more than 18dB.
Brief description of the drawings
Fig. 1-1 amplifies prepulse oscillogram for square wave in the prior art；
Fig. 1-2 amplifies afterpulse oscillogram for square wave in the prior art；
Fig. 2-1 is the timing chart before the amplification of the triangular pulse of the utility model embodiment；
Fig. 2-2 is the timing chart after the amplification of the triangular pulse of the utility model embodiment；
Fig. 3 is the continuous single-frequency polarization-maintaining laser linewidth measured drawing of the utility model embodiment；
Fig. 4 reaches measured light spectrogram during 800uJ for the single pulse energy of the utility model embodiment；
Fig. 5 is the continuous single-frequency polarization-maintaining laser schematic diagram of the utility model embodiment；
Fig. 6 is the utility model embodiment for impulse modulation schematic diagram；
Fig. 7 is the pulse amplifying structure principle chart of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that described embodiment is the utility model part of the embodiment, rather than whole implementation
Example.Based on the embodiment in the utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belong to the scope of the utility model protection.
A kind of as shown in figure 5, high pulse energy optical-fiber laser applied to coherent wind radar system of the present utility model
Device light path, including use the continuous single-frequency polarization-maintaining laser of optical fiber composite chamber structure, be arranged on continuous single-frequency polarization-maintaining laser
The acousto-optic modulator of output end and the one-level EDFA Erbium-Doped Fiber Amplifier being arranged on after acousto-optic modulator, two level erbium-doped fiber are put
Big device and three-level EDFA Erbium-Doped Fiber Amplifier, one-level EDFA Erbium-Doped Fiber Amplifier are forward pumping fibre core structure for amplifying, and two level mixes bait light
Fiber amplifier and three-level EDFA Erbium-Doped Fiber Amplifier are forward pumping double clad structure for amplifying, acousto-optic modulator modulated triangular wave arteries and veins
Punching.
As shown in figure 5, continuous single-frequency polarization-maintaining laser mixes bait light including the first wavelength division multiplexer 980/1550WDM1, first
Fine EDF1, circulator CIR, the second Er-doped fiber EDF2, F-P cavity grating, optical splitter 10/90TAP, single polarization fiber P-Z
Fiber and the Active Optical Fiber of non-pumping；The Active Optical Fiber of non-pumping is coupled into by the first wavelength division multiplexer 980/1550WDM1
Erbium-doped fiber EDF1；First wavelength division multiplexer 980/1550WDM1 is connected to form amplifier with the first erbium-doped fiber EDF1；The
Two Er-doped fiber EDF2 are connected with F-P cavity grating to form saturated absorbing body；Circulator CIR is connected shape with optical splitter 10/90TAP
Circularize loop；Optical splitter 10/90TAP passes through single polarization fiber P-Z fiber and the first wavelength division multiplexer 980/1550WDM1
Connection.
Specifically, the first wavelength division multiplexer 980/1550WDM1 is connected to form amplifier with the first erbium-doped fiber EDF1,
Gain is produced, F-P cavity grating and the second Er-doped fiber EDF2 form a saturated absorbing body, form transient grating, produce filtering
Function；Circulator CIR is connected to form loop checking installation and feed back to filtered light in main optical path with optical splitter 10/90TAP to be continued
Amplification, filtering.To reduce the influence of vibrations, F-P cavity grating is individually isolated, to avoid the phenomenon of mode hopping, with TEC TEC
Insulation, the light of F-P cavity reflection interfere with incidence wave, form standing wave effect, the longitudinal refractive index generating period of the optical fiber made
Property spatial modulation, form the fiber grating of a transient state, annular chamber be filtered, obtain stable single-frequency laser
Output, suppress the phenomenon of mode hopping.Meanwhile to avoid the phenomenon of spatial hole burning, used all optics are polarization-maintaining device
Part, and in the optical path, using single polarization fiber, ensure high polarization state, further suppress the phenomenon of mode hopping.
As shown in figure 3, continuous single-frequency polarization-maintaining laser：In single-frequency performance, line width can be with ＜ 1KHz.
As shown in fig. 6, signal generator is connected with acousto-optic modulator, and after signal generator generation triangular pulse, letter
The output end of number generator is connected to the radio-frequency head of acousto-optic modulator by radio frequency line.In the present embodiment, using external modulation technology,
By continuous single-frequency polarization-maintaining laser, power 70mW input acousto-optic modulators are modulated, and export the laser of pulse.The present embodiment
Pulse laser shape after middle modulation is triangular pulse, and its pulsewidth is 4us, repetition 2.5kHz, mean power 0.4mW, as
The seed signal light of amplification in next step.This triangular pulse pulse in amplification process will not deform substantially, before amplification
Shown in impulse waveform difference the below figure 2-1 and 2-2 after amplification, so as to realize that the laser of high single pulse energy exports,
Coherent wind field of radar has very high use value.
As shown in fig. 7, one-level EDFA Erbium-Doped Fiber Amplifier includes the second wavelength division multiplexer 980/1550WDM2, the first 980nm
Mode pump light source Pump1, polarization-maintaining Er-doped fiber ESF and the first isolator ISO1, the second wavelength division multiplexer 980/1550WDM2,
Polarization-maintaining Er-doped fiber ESF and the first isolator ISO1 are sequentially connected, and the first 980nm mode pump light source Pump1 pass through the second ripple
Division multiplexer 980/1550WDM2 is coupled into polarization-maintaining Er-doped fiber ESF.
Specifically, when the first 980nm mode pump light sources Pump1 power is 500mW, output mean power is
80mW, single pulse energy 32uJ, the output optical fibre type of one-level EDFA Erbium-Doped Fiber Amplifier is PM 9/125.
As shown in fig. 7, two level EDFA Erbium-Doped Fiber Amplifier includes the 2nd 980nm multimode pump light sources Pump2, first (1+1)
× 1 multimode pump combiner COM1, the first erbium-doped fiber EDF1, the first cladding pumping stripper CPS1 and the second isolator
ISO2, the first multimode pump combiner COM1 of (1+1) × 1, the second erbium-doped fiber EDF2, the first cladding pumping stripper CPS1 and
Second isolator ISO2 is sequentially connected, and the 2nd 980nm multimode pump light source Pump2 close beam by the first multimode pumping of (1+1) × 1
Device COM1 is coupled into the first erbium-doped fiber EDF1.
Specifically, as the 2nd 980nm multimode pump light source Pump2 power 2.6W, one-level EDFA Erbium-Doped Fiber Amplifier is put
Big 80mW mean powers are amplified to 300mW, and single pulse energy now is 120uJ, the output of two level EDFA Erbium-Doped Fiber Amplifier
Fiber type is PM 9/125.
As shown in fig. 7, three-level EDFA Erbium-Doped Fiber Amplifier includes the second multimode pump combiner COM2 of (2+1) × 1, the 3rd
980nm multimode pumpings Pump3, the second gain fibre EDF2, the second cladding pumping stripper CPS2 and the 3rd isolator ISO3, the
The two multimode pump combiner COM2 of (2+1) × 1, the second gain fibre EDF2, the second cladding pumping stripper CPS2 and the 3rd every
It is sequentially connected from device ISO3, the 3rd 980nm multimode pumping Pump3 are coupled by the second multimode pump combiner COM2 of (2+1) × 1
Enter the second gain fibre EDF2.
Specifically, in three-level EDFA Erbium-Doped Fiber Amplifier, the mean power 300mW that two level EDFA Erbium-Doped Fiber Amplifier exports is put
2W is arrived greatly, corresponding peak power and single pulse energy are very high, thus need the bigger optical fiber of core diameter to suppress SBS generation,
Therefore, the second gain fibre EDF2 is PLMA-EYDF-25P/300, the Transmission Fibers that three-level EDFA Erbium-Doped Fiber Amplifier uses for
PLMA-GDF-25/300.During with core diameter 25um optical fiber to transmit the laser of 1550nm wavelength, its transmission mode is multimode,
In the present embodiment, find the second gain fibre EDF2 that core diameter is 25um being coiled in a diameter of 8.5cm's by many experiments
In aluminium disks, high-order mode can be effectively filtered, so as to ensure that final output laser is essentially basic mode transmission, its beam quality
M2 ＜ 1.1.When 3rd 980nm multimode pumpings Pump3 power is 14W, the power that exports laser is 2W, corresponding single pulse energy
Measure as 800uJ, while there is very high signal to noise ratio, shown in its impulse waveform and spectrum below figure 2-2 and 4.
Also include mould field adaptation MFA, two level EDFA Erbium-Doped Fiber Amplifier passes through mould field with three-level EDFA Erbium-Doped Fiber Amplifier
Orchestration MFA connections, specifically, the output optical fibre of two level EDFA Erbium-Doped Fiber Amplifier is PM9/125, the second multimode pumping of (2+1) × 1
Bundling device COM2 input-output optical fiber type is PLMA-GDF-25/300.
Triangular pulse is generated using suitable signal generator and modulator by the utility model of arrangement above,
This pulse pulse in amplification process will not deform substantially, so as to realize that the laser of high single pulse energy exports,
Coherent wind field of radar has very high use value.For continuous single-frequency polarization-maintaining laser in single-frequency performance, line width can be with ＜
1KHz.The single pulse energy of final output pulse laser also has the space further lifted, impulse waveform phase up to 800uJ
Very large deformation does not occur for the pulse before amplification.Final pulse laser output has good coherence property and high noise
Than.Final pulse laser output has good polarization characteristic, and polarization extinction ratio is more than 18dB.
It should be appreciated that exemplary embodiment as described herein is illustrative and be not restrictive.Although retouched with reference to accompanying drawing
One or more embodiments of the present utility model are stated, it should be understood by one skilled in the art that without departing from appended
In the case of the spirit and scope of the present utility model that claim is limited, the change of various forms and details can be made.
Claims (8)
1. a kind of high pulse energy optical fiber laser light path applied to coherent wind radar system, it is characterised in that including adopting
Adjusted with the acousto-optic of the continuous single-frequency polarization-maintaining laser of optical fiber composite chamber structure, the output end for being arranged on continuous single-frequency polarization-maintaining laser
Device processed and the one-level EDFA Erbium-Doped Fiber Amplifier, two level EDFA Erbium-Doped Fiber Amplifier and the three-level that are arranged on after acousto-optic modulator mix bait
Fiber amplifier, the one-level EDFA Erbium-Doped Fiber Amplifier are forward pumping fibre core structure for amplifying, the two level erbium-doped fiber amplification
Device and three-level EDFA Erbium-Doped Fiber Amplifier are forward pumping double clad structure for amplifying, the acousto-optic modulator modulated triangular wave arteries and veins
Punching.
2. the high pulse energy optical fiber laser light path according to claim 1 applied to coherent wind radar system, its
It is characterised by, the continuous single-frequency polarization-maintaining laser is mixed including the first wavelength division multiplexer, the first erbium-doped fiber, circulator, second
Erbium optical fiber, grating, optical splitter, single polarization fiber and the Active Optical Fiber of non-pumping；The Active Optical Fiber of the non-pumping passes through first
Wavelength division multiplexer is coupled into erbium-doped fiber；First wavelength division multiplexer is connected with the first erbium-doped fiber to form amplifier；Institute
The second Er-doped fiber is stated to be connected with grating to form saturated absorbing body；The circulator is connected to form loop checking installation with optical splitter；
The optical splitter is connected by single polarization fiber with the first wavelength division multiplexer.
3. the high pulse energy optical fiber laser light path according to claim 2 applied to coherent wind radar system, its
It is characterised by, the grating is individually isolated, and is incubated with TEC.
4. the high pulse energy optical fiber laser light path according to claim 3 applied to coherent wind radar system, its
It is characterised by, signal generator is connected with the acousto-optic modulator, after the signal generator generation triangular pulse, signal
The output end of generator is connected to the radio-frequency head of acousto-optic modulator by radio frequency line.
5. the high pulse energy optical fiber laser light path according to claim 4 applied to coherent wind radar system, its
It is characterised by, the one-level EDFA Erbium-Doped Fiber Amplifier includes the second wavelength division multiplexer, the first mode pump light source, polarization-maintaining er-doped light
Fine and the first isolator, second wavelength division multiplexer, polarization-maintaining Er-doped fiber and the first isolator are sequentially connected, and described first is single
Mould pump light source is coupled into polarization-maintaining Er-doped fiber, the output optical fibre class of one-level EDFA Erbium-Doped Fiber Amplifier by the second wavelength division multiplexer
Type is PM 9/125.
6. the high pulse energy optical fiber laser light path according to claim 5 applied to coherent wind radar system, its
It is characterised by, the two level EDFA Erbium-Doped Fiber Amplifier includes the second multimode pump light source, beam is closed in the first multimode pumping of (1+1) × 1
Beam is closed in device, the first erbium-doped fiber, the first cladding pumping stripper and the second isolator, first (1+1) × 1 multimode pumping
Device, the second erbium-doped fiber, the first cladding pumping stripper and the second isolator are sequentially connected, and the second multimode pump light source is led to
Cross the first multimode pump combiner of (1+1) × 1 and be coupled into the first erbium-doped fiber；The output optical fibre class of two level EDFA Erbium-Doped Fiber Amplifier
Type is PM 9/125.
7. the high pulse energy optical fiber laser light path according to claim 5 applied to coherent wind radar system, its
It is characterised by, the three-level EDFA Erbium-Doped Fiber Amplifier includes the second multimode pump combiner of (2+1) × 1, the 3rd multimode pumping, the
Two gain fibres, the second cladding pumping stripper and the 3rd isolator, second (2+1) × 1 multimode pump combiner, second
Gain fibre, the second cladding pumping stripper and the 3rd isolator are sequentially connected, and the 3rd multimode is pumped through second (2+1)
× 1 multimode pump combiner is coupled into the second gain fibre, and the second gain fibre is PLMA-EYDF-25P/300, and three-level mixes bait
The Transmission Fibers that fiber amplifier uses is PLMA-GDF-25/300.
8. according to any described high pulse energy optical fiber laser light applied to coherent wind radar system of claim 1-7
Road, it is characterised in that also pass through including mould field adaptation, the two level EDFA Erbium-Doped Fiber Amplifier with three-level EDFA Erbium-Doped Fiber Amplifier
Mould field adaptation connects.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111641100A (en) * | 2020-05-29 | 2020-09-08 | 上海科乃特激光科技有限公司 | Laser output control device, control method and laser wind-finding radar |
| CN111817127A (en) * | 2020-07-07 | 2020-10-23 | 上海瀚宇光纤通信技术有限公司 | Output control device and control method of laser and laser wind measuring radar |
| CN112615242A (en) * | 2020-12-16 | 2021-04-06 | 安徽新锐激光科技有限公司 | Single-frequency pulse fiber laser for wind measuring radar system |
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| 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 |
| CN113671509A (en) * | 2021-08-16 | 2021-11-19 | 南京牧镭激光科技有限公司 | Large-energy multichannel laser radar beam switching method |
| CN113937602A (en) * | 2021-09-15 | 2022-01-14 | 中国电子科技集团公司第十一研究所 | Pulse fiber laser |
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| CN111641100A (en) * | 2020-05-29 | 2020-09-08 | 上海科乃特激光科技有限公司 | Laser output control device, control method and laser wind-finding radar |
| CN111641100B (en) * | 2020-05-29 | 2021-07-30 | 上海科乃特激光科技有限公司 | Laser output control device, control method and laser wind-finding radar |
| CN111817127A (en) * | 2020-07-07 | 2020-10-23 | 上海瀚宇光纤通信技术有限公司 | Output control device and control method of laser and laser wind measuring radar |
| CN112615242A (en) * | 2020-12-16 | 2021-04-06 | 安徽新锐激光科技有限公司 | Single-frequency pulse fiber laser for wind measuring radar system |
| CN113109834A (en) * | 2021-04-16 | 2021-07-13 | 中国人民解放军国防科技大学 | High-energy and high-precision underwater three-dimensional imaging laser radar system and method |
| 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 |
| CN113671509A (en) * | 2021-08-16 | 2021-11-19 | 南京牧镭激光科技有限公司 | Large-energy multichannel laser radar beam switching method |
| CN113671509B (en) * | 2021-08-16 | 2023-07-11 | 南京牧镭激光科技股份有限公司 | High-energy multichannel laser radar beam switching method |
| CN113937602A (en) * | 2021-09-15 | 2022-01-14 | 中国电子科技集团公司第十一研究所 | Pulse fiber laser |
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