CN209169626U - The gain switch laser of thulium-doped fiber laser pumping - Google Patents
The gain switch laser of thulium-doped fiber laser pumping Download PDFInfo
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- CN209169626U CN209169626U CN201920087942.6U CN201920087942U CN209169626U CN 209169626 U CN209169626 U CN 209169626U CN 201920087942 U CN201920087942 U CN 201920087942U CN 209169626 U CN209169626 U CN 209169626U
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Abstract
The utility model discloses a kind of gain switch lasers of thulium-doped fiber laser pumping, including sequentially connected impulse generator, biasing T-shaped circuit drives, nanometer pulse pump source and the first fibre optic isolater, the output end of first fibre optic isolater and the first input end of optical-fiber bundling device connect, the output end of optical-fiber bundling device, first fiber bragg grating, gain fibre and the second fiber bragg grating are sequentially connected, second input terminal of optical-fiber bundling device is connected with the first semiconductor laser, the output end output optical fibre of second fiber bragg grating is to Cr:ZnSe/S crystal, final output laser.The utility model pumps Cr:ZnSe/S crystal using 1908 nanometers of short wavelength lasers of mixing pumping gain switch technology, the threshold energy of pumping pulse light is not only reduced, and 2 mum lasers exported are more stable compared to the 2 mum laser horizon states for adjusting Q, mode-locking technique to generate.
Description
Technical field
The utility model belongs to gain switch laser technical field, in particular to a kind of thulium-doped fiber laser pumping
Gain switch laser.
Background technique
Currently, the laser in the work of 2 microns of human eye safe wavebands causes greatly in scientific research and industrial application
Interest, such as in sensing, spectroscopy, material processed and applied and nonlinear frequency conversion field.2 micron wavebands have abundant
Molecular absorption line, the laser source for matching the absorbing wavelength have atmospheric laser radar sensing and medical surgery application very much
With.1908 nanometers of laser is an important branch of 1.9 micron waveband laser, because 1908 nanometers of laser can pass through
It pumps Cr:ZnSe/S, Ho:YAG and other nonlinear crystals generates the laser of 2 micron wavebands.Then, 2 microns of laser
3 microns to 5 microns of laser can be generated by pumping ZGP crystal.3 microns to 5 microns of mid-infrared laser device is widely applied
In photoelectronic warfare and laser radar system.In general, obtaining 1908 nanometers of laser by one of two ways: using solid-state laser
Device or optical fiber laser.However, loss and fuel factor, which will lead to solid-state laser, shows lower optical efficiency and poor
Beam quality factor.In comparison, full-optical-fiber laser has lower loss and fuel factor, it means that they have higher
Optical efficiency, output power and better beam quality factor.In addition, full-optical-fiber laser have it is compact-sized, it is light-weight,
It is easy to operate, many advantages, such as good beam quality.
Recently, it is increasingly becoming hot spot in such a way that gain switch technology generates pulse, produced thereupon a large amount of
Correlative study and application.By means of the good heat dissipation performance of optical fiber, thulium doped fiber swashs device has uniqueness in terms of high power operating
Advantage.Mixing thulium gain fibre mainly has 780 nanometers to 800 nanometers, 1200 nanometers, 1550 to 1750 nanometers of three absorption bands,
1550 to 1750 nanometers of absorption band is Chong Die with the sharp transmitting band of device of Er-doped fiber, and Er-doped fiber is selected to swash device interband (in-
Band thulium doped fiber, available low-down pumping quantum loss and higher pumping Slop efficiency (70% to 80%)) are pumped,
But high pulse energy can not be obtained.
Compared to 1550 nanometers absorption bands, 780 nanometers to 800 nanometers lights can be directly using the AlGaAs Gao Gong of business
Rate semiconductor laser is pumped, and is pumped using 800 nanometer lasers, and excitation state thulium ion can be acted on ground state thulium ion and be produced
The thulium ion of raw two f energy levels, that is, " two to one " cross-relaxation process.The light light that this process increases pump light converts effect
Rate, the light conversion efficiency reason that the light conversion efficiency theoretical value for having reached the light light conversion efficiency theoretical value for mixing thulium medium has reached
The light conversion efficiency theoretical value reached by value reaches 80%, this operates thulium-doped fiber laser at high power,
It can simultaneously serve as the perfect light source converted to middle infrared spectrum.But the output pulse of 800 nanometers of pumpings is since " two arrive simultaneously
One " cross relaxation process makes it be not so good as the output pulse rule of 1550 nano wave lengths pumping in the time domain, brings not to application
Just.
Utility model content
For the technical problems in the prior art, the utility model provides a kind of increasing of thulium-doped fiber laser pumping
Beneficial Q-swith laser Q.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of gain switch laser of thulium-doped fiber laser pumping, including sequentially connected impulse generator, biasing T
Shape circuit drives, nanometer pulse pump source and the first fibre optic isolater, the output end and optical fiber of first fibre optic isolater close
The first input end of beam device connects, the output end of the optical-fiber bundling device, the first fiber bragg grating, gain fibre and second
Fiber bragg grating is sequentially connected, and the second input terminal of the optical-fiber bundling device is connected with the first semiconductor laser, described
The output end output optical fibre of second fiber bragg grating is to Cr:ZnSe/S crystal, final output laser.
Preferably, the third input terminal of the optical-fiber bundling device is connected with the second semiconductor laser；The nanometer arteries and veins
It rushes and is equipped with sequentially connected second fibre optic isolater, wavelength division multiplexer and er-doped light between pumping source and the first fibre optic isolater
Fibre/erbium-ytterbium co-doped fiber, the first input end of the wavelength division multiplexer are connect with the output end of the second fibre optic isolater, the wave
The second input terminal and third input terminal of division multiplexer are connected separately with third semiconductor laser and the 4th semiconductor laser.
Preferably, be successively arranged between second fiber bragg grating and Cr:ZnSe/S crystal pumping stripper,
Collimate isolator, condenser lens and the first hysteroscope, the output end of the Cr:ZnSe/S crystal is equipped with the second hysteroscope, and laser is from institute
Condenser lens, the first hysteroscope, Cr:ZnSe/S crystal and the second hysteroscope, final laser are passed sequentially through after stating collimation isolator output
It is exported by second hysteroscope, first hysteroscope, Cr:ZnSe/S crystal and the second hysteroscope, which constitute Cr:ZnSe/S and constitute, to swash
Optical cavity.
Preferably, the upper end of first hysteroscope and the second hysteroscope is tilted to the direction close to Cr:ZnSe/S crystal
Setting, the lower section of the Cr:ZnSe/S crystal are equipped with grating and output coupler so that laser after collimation isolator output according to
It is secondary by condenser lens, the first hysteroscope, Cr:ZnSe/S crystal and the second hysteroscope after, a part of laser is reflected into from the second hysteroscope
On grating, after the optical grating reflection returns the second hysteroscope, final laser is exported by output coupler.
Preferably, the range of the central wavelength lambda of the second semiconductor laser output are as follows: 750 nanometers≤λ≤820
Nanometer, it is 788.5 nanometers that central wavelength is measured in experiment, and three dB bandwidth is 1.5 nanometers；Optical fiber class used in the pumping stripper
Type is 25/400 doubly clad optical fiber, and signal input loss is 0.5dB
Preferably, the gain fibre is the double clad polarization-maintaining or non-polarization-maintaining that fibre core is 25 microns, covering is 400 microns
Thulium doped fiber, the operation wavelength of the gain fibre are 1900 nanometers to 2100 nanometers, and fibre core numerical aperture is 0.09, and length is
3 meters, every meter of 2.4dB, every meter of 1.8dB are absorbed as in the covering of 793 nanometer wave strong points.
Preferably, the central wavelength of first fiber bragg grating is 1907+/- 0.2 nanometers, bandwidth 1.5
+/- 0.2 nanometer, reflectivity is more than or equal to 98%, and optical fiber used is the large mode field light that fibre core/covering is respectively 25/400 micron
It is fine；The central wavelength of second fiber bragg grating is 1907+/- 0.2 nanometers, and bandwidth is 0.5+/- 0.05 nanometers, reflection
Rate is 10+/- 3%, the large mode field optical fiber that optical fiber used is 25/400 micron.
Preferably, the gain fibre, the first fiber bragg grating and the second fiber bragg grating are placed in heat
On heavy.
Preferably, fiber core/covering of the input terminal of the optical-fiber bundling device is 105 microns/125 microns, numerical value
Aperture is 0.22, and length is 1.35 meters；Output end fiber core covering is 20 microns/400 microns, and length is 1.26 meters.
Preferably, nanometer pulse pump source is Er-doped fiber or erbium-ytterbium co-doped fiber laser, the center of output
Wavelength is 1550 nanometers or 1560 nanometers, and repetition rate is 100 kHz between 900 kHz.
The gain switch laser of this practical new novel thulium-doped fiber laser pumping, has the advantages that this
Utility model pumps Cr:ZnSe/S crystal by using 1908 nanometers of short wavelength lasers of mixing pumping gain switch technology,
2 mum lasers for not only reducing the threshold energy of pumping pulse light, and exporting are Q, mode-locking technique generate 2 micro- compared to adjusting
Rice laser temporal state is more stable.It is set to export pulse laser, and its arteries and veins by using electrical modulation continuous conductor laser
Rush reconfigurable, can export the laser of random waveform for detecting, medicine, the purposes such as military affairs and scientific research.The utility model can
Scalability is strong, and the amplifying stage that can add up carries out high-power laser pulse output, and has by the characteristic of tunable wave length.
Detailed description of the invention
Fig. 1 is the structure of the embodiment one of the gain switch laser of the thulium-doped fiber laser pumping in the utility model
Schematic diagram；
Fig. 2 is the schematic diagram of the gain switch laser of the thulium-doped fiber laser pumping in the utility model；
Fig. 3 is the structure of the embodiment two of the gain switch laser of the thulium-doped fiber laser pumping in the utility model
Schematic diagram；
Fig. 4 is the structure of the embodiment three of the gain switch laser of the thulium-doped fiber laser pumping in the utility model
Schematic diagram.
In figure: 1, computer；2, impulse generator；3, biasing T-shaped circuit drives；4, nanometer pulse pump source；5, the second light
Fiber isolator；6, third semiconductor laser；7, the 4th semiconductor laser；8, wavelength division multiplexer；9, optical fiber；10, the first light
Fiber isolator；12, the first semiconductor laser；13, the second semiconductor laser；14, optical-fiber bundling device；15, the first optical fiber cloth
Glug grating；16, the second fiber bragg grating；17, heat sink；18, gain fibre；19,；20, isolator is collimated；21, it focuses
Lens 21；22a, the first hysteroscope；22b, the first hysteroscope；23, Cr:ZnSe/S crystal；24, grating；25, output coupler.
Specific embodiment
So that those skilled in the art is better understood the technical solution of the utility model, with reference to the accompanying drawing and is embodied
Example elaborates to the utility model.
Embodiment one
As shown in Figure 1, the gain switch that the embodiments of the present invention disclose a kind of thulium-doped fiber laser pumping swashs
Light device, including sequentially connected 2, biasing T-shaped circuit drives 3, nanometer pulse pump source 4 and the first fibre optic isolater 10, first
The output end of fibre optic isolater 10 is connect with the first input end of optical-fiber bundling device 14, the output end of optical-fiber bundling device 14, first
Fiber bragg grating 15, gain fibre 18 and the second fiber bragg grating 16 are sequentially connected, and the second of optical-fiber bundling device 14
Input terminal is connected with the first semiconductor laser 12, the output end output optical fibre of the second fiber bragg grating 16 to Cr:ZnSe/
S crystal 23, final output laser.16 structure of first fiber bragg grating 15, gain fibre 18 and the second fiber bragg grating
At first laser resonant cavity.
The working principle of the gain switch laser of thulium-doped fiber laser pumping in the present embodiment is as follows.
Fig. 2 is the quasi-three-level figure of thulium, by 793 nanometer of first semiconductor laser 12, the second semiconductor laser of nanometer
The 13 continuous light generated will be in ground state3H6Particle pumping to excitation state3H4, this process is (a), the non-spoke of excited state particle
It penetrates and transits to excitation state3H5(b), continue noradiative transition later and adjourn metastable state3F5(c), i.e. upper laser level.Due to continuous
The control of luminous intensity is unlikely to be more than threshold value and population inversion occurs.The 1.5 micron/nano pulse pump sources by electrical modulation
4 pulsed lights issued make population further exist due to excited absorption (d) and cross relaxation (e) process3F4Energy level additive, so that
Population inversion occurs in reaching threshold value.Since second of pump light is impulse form, it means that grain after a period of time
Subnumber be returned to threshold value hereinafter, so output laser also can be pulse form, that is, realize so-called gain switch process.By
It is really to be realized by pulsed light pumping in this process, almost without leading to export the physical processes such as unstable relaxation, institute
Ensure that the systematicness of 2 microns of pulses.And due to only needing a small amount of pumping pulse energy to can reach threshold value, so surplus
Remaining pulse energy can be used to inverted population being increased to higher level, to obtain the pulse of higher energy.Compared to biography
The technical solution of system only pumped with 1.5 microns of pulsed lights, pumping pulse energy needed for the utility model obviously makes threshold value
It substantially reduces, and due to the characteristic of electrical modulation, makes the laser of final output that there is the adjustable characteristic of pulse shape.
Embodiment two
In the present embodiment, with embodiment one the difference is that, computer 1LabVIEW process control impulse generator 2
The impulse waveform of setting is generated, the third input terminal of optical-fiber bundling device 14 is connected with the second semiconductor laser 13, nanometer pulse
Sequentially connected second fibre optic isolater 5, wavelength division multiplexer 8 and er-doped are equipped between pumping source 4 and the first fibre optic isolater 10
Optical fiber/erbium-ytterbium co-doped fiber 9, the first input end of wavelength division multiplexer 8 are connect with the output end of the second fibre optic isolater 5, wavelength-division
The second input terminal and third input terminal of multiplexer 8 are connected separately with third semiconductor laser 6 and the 4th semiconductor laser
7.Be successively arranged between second fiber bragg grating 16 and Cr:ZnSe/S crystal 23 pumping stripper 19, collimation isolator 20,
The output end of condenser lens 21 and the first hysteroscope 22a, Cr:ZnSe/S crystal 23 is equipped with the second hysteroscope 22b, and laser is isolated from collimation
Device 20 passes sequentially through condenser lens 21, the first hysteroscope 22a, Cr:ZnSe/S crystal 23 and the second hysteroscope 22b after exporting, final to swash
Light is exported by the second hysteroscope 22b, and the first hysteroscope 22a, Cr:ZnSe/S crystal 23 and the second hysteroscope 22b constitute Cr:ZnSe/S23
Second laser resonant cavity.
Optical fiber 9 is Er-doped fiber or erbium-ytterbium co-doped fiber；The gain fibre 18 is thulium doped fiber；Gain fibre 18 and light
Fibre 9 is polarization-maintaining or non-polarization-maintaining thulium doped fiber.
Embodiment three
The gain switch laser of thulium-doped fiber laser pumping and the difference of embodiment two in the present embodiment exist
In the upper end of the first hysteroscope 22a and the second hysteroscope 22b are obliquely installed to the direction close to Cr:ZnSe/S crystal 23, Cr:
The lower section of ZnSe/S crystal 23 is equipped with grating 24 and output coupler 25, so that laser successively leads to after exporting from collimation isolator 20
After over-focusing lens 21, the first hysteroscope 22a, Cr:ZnSe/S crystal 23 and the second hysteroscope 22b, a part of laser is from the second hysteroscope
22b is reflected on grating 24, and after grating 24 is reflected back the second hysteroscope 22b, final laser is exported by output coupler 25.
In this embodiment, the first hysteroscope 22a, Cr:ZnSe/S crystal 23,25 structure of the second hysteroscope 22b, grating 24 and output coupler (OC)
At the laser resonator of Cr:ZnSe/S, and the entire cavity structure with grating is Littrow structure, passes through rotating shutter
Angle can make the laser of output have the adjustable characteristic of wave-length coverage, this is not available for general tradition Cr:ZnSe/S laser
's.
The gain fibre 18 of gain switch laser of thulium-doped fiber laser pumping in the utility model is for fibre core
25 microns, the double clad polarization-maintaining that covering is 400 microns or non-polarization-maintaining thulium doped fiber, the operation wavelength of gain fibre 18 are received for 1900
For rice to 2100 nanometers, fibre core numerical aperture is 0.09, and length is 3 meters, is absorbed as every meter in the covering of 793 nanometer wave strong points
2.4dB (polarization-maintaining), every meter of 1.8dB (non-polarization-maintaining).Gain fibre 18 is 7.2dB to 793 nanometers of Pumping light absorptions, is protected with optimal value
It holds consistent；Since fibre core diameter is 25 microns, it is easy to produce high-order mode, is decreased to gain fibre bending diameter in experiment
13 to 20 centimetres to inhibit high-order mode
The central wavelength of first fiber bragg grating 15 is 1907+/- 0.2 nanometers, and bandwidth is 1.5+/- 0.2 nanometers,
Reflectivity is more than or equal to 98%, and optical fiber used is the large mode field optical fiber that fibre core/covering is respectively 25/400 micron；Second optical fiber cloth
The central wavelength of glug grating 16 is 1907+/- 0.2 nanometers, and bandwidth is 0.5+/- 0.05 nanometers, and reflectivity is 10+/- 3%, institute
The large mode field optical fiber for being 25/400 micron with optical fiber.
Gain fibre 18, the first fiber bragg grating 15 and the second fiber bragg grating 16 are placed on heat sink 17,
Heat dissipation can be effectively cooled down to be conducive to increase short wavelength laser efficiency.
Fiber core/covering of the input terminal of optical-fiber bundling device 14 is 105 microns/125 microns, numerical aperture 0.22,
Length is 1.35 meters；Output end fiber core covering is 20 microns/400 microns, and length is 1.26 meters.
The range of the central wavelength lambda of second semiconductor laser 13 output are as follows: 750 nanometers≤λ≤820 nanometer, in experiment
Measuring central wavelength is 788.5 nanometers, and three dB bandwidth is 1.5 nanometers.
Nanometer pulse pump source 4 is Er-doped fiber or erbium-ytterbium co-doped fiber laser, and the central wavelength of output is received for 1550
Rice or 1560 nanometers, repetition rate be 100 kHz between 900 kHz.
Fiber type used in pumping stripper 19 is 25/400 doubly clad optical fiber, and signal input loss is 0.5dB.
The gain switch laser of thulium-doped fiber laser pumping in the utility model is received in electrical modulation semiconductor 1550
Under the combination of rice laser and 793 nanometers of continuous wave laser mixing pumpings, facilitated using 793 nanometers of continuous laser pumping source
Upper laser level energy storage can realize stable gain switch arteries and veins under the excitation of lower 1550 nanometers of pulse energies in this way
Punching.Therefore, after seeds chamber can provide high energy pulse, it is already possible to save traditional multistage amplifying operation.This mixing pump
Pu is configured with the gain switch pulse for being conducive to generate the high-average power with more preferable Slop efficiency and several hundred nanosecond pulse widths.Directly adjust
The principle of semiconductor laser processed is similar with gain switch process, direct modulated process use wide electrical driving pulses, using compared with
Wide electrical excitation pulse, inhibits relaxation oscillation the output of process semiconductor laser, the width of output optical pulse, shape and excitation
Electronic pulse width, shape are similar.It is available consistent therewith by changing the width of the electric pulse of excitation and the shape of pulse
Light pulse.The tunable light pulse of impulse waveform, pulse width can be obtained using direct modulation semiconductor technology, that is, have and appoint
The characteristics of waveform of anticipating exports.
Above embodiments are only the exemplary embodiment of the utility model, are not used in limitation the utility model, this is practical new
The protection scope of type is defined by the claims.Those skilled in the art can be in the essence and protection scope of the utility model
It is interior, various modifications or equivalent replacements are made to the utility model, this modification or equivalent replacement also should be regarded as falling in originally practical new
In the protection scope of type.
Claims (10)
1. a kind of gain switch laser of thulium-doped fiber laser pumping, which is characterized in that sent out including sequentially connected pulse
Raw device, biasing T-shaped circuit drives, nanometer pulse pump source and the first fibre optic isolater, the output of first fibre optic isolater
End is connect with the first input end of optical-fiber bundling device, the output end of the optical-fiber bundling device, the first fiber bragg grating, gain
Optical fiber and the second fiber bragg grating are sequentially connected, and the second input terminal of the optical-fiber bundling device is connected with the first semiconductor and swashs
Light device, the output end output optical fibre of second fiber bragg grating to Cr:ZnSe/S crystal, final output laser.
2. the gain switch laser of thulium-doped fiber laser pumping according to claim 1, which is characterized in that the light
The third input terminal of fine bundling device is connected with the second semiconductor laser；Nanometer pulse pump source and the first fibre optic isolater
Between be equipped with sequentially connected second fibre optic isolater, wavelength division multiplexer and Er-doped fiber/erbium-ytterbium co-doped fiber, the wavelength-division is multiple
It is connect with the first input end of device with the output end of the second fibre optic isolater, the second input terminal and third of the wavelength division multiplexer
Input terminal is connected separately with third semiconductor laser and the 4th semiconductor laser.
3. the gain switch laser of thulium-doped fiber laser according to claim 2 pumping, which is characterized in that described the
Pumping stripper, collimation isolator, condenser lens and the are successively arranged between two fiber bragg gratings and Cr:ZnSe/S crystal
One hysteroscope, the output end of the Cr:ZnSe/S crystal are equipped with the second hysteroscope, and laser successively leads to after collimation isolator output
Over-focusing lens, the first hysteroscope, Cr:ZnSe/S crystal and the second hysteroscope, final laser is exported by second hysteroscope, described
First hysteroscope, Cr:ZnSe/S crystal and the second hysteroscope constitute Cr:ZnSe/S and constitute laser resonator.
4. the gain switch laser of thulium-doped fiber laser according to claim 3 pumping, which is characterized in that described the
The upper end of one hysteroscope and the second hysteroscope is obliquely installed to the direction close to Cr:ZnSe/S crystal, the Cr:ZnSe/S crystal
Lower section be equipped with grating and output coupler so that laser from collimation isolator output after pass sequentially through condenser lens, the first hysteroscope,
After Cr:ZnSe/S crystal and the second hysteroscope, a part of laser is reflected on grating from the second hysteroscope, is returned by the optical grating reflection
After second hysteroscope, final laser is exported by output coupler.
5. the gain switch laser of thulium-doped fiber laser according to claim 4 pumping, which is characterized in that described the
The range of the central wavelength lambda of two semiconductor lasers output are as follows: 750 nanometers≤λ≤820 nanometer, measure central wavelength in experiment
It is 788.5 nanometers, three dB bandwidth is 1.5 nanometers；Fiber type used in the pumping stripper is 25/400 doubly clad optical fiber, letter
Number input loss is 0.5dB.
6. the gain switch laser of thulium-doped fiber laser pumping according to claim 1, which is characterized in that the increasing
Beneficial optical fiber is the double clad polarization-maintaining or non-polarization-maintaining thulium doped fiber that fibre core is 25 microns, covering is 400 microns, the gain fibre
Operation wavelength is 1900 nanometers to 2100 nanometers, and fibre core numerical aperture is 0.09, and length is 3 meters, in the packet of 793 nanometer wave strong points
Layer is absorbed as every meter of 2.4dB, every meter of 1.8dB.
7. the gain switch laser of thulium-doped fiber laser according to claim 1 pumping, which is characterized in that described the
The central wavelength of one fiber bragg grating is 1907+/- 0.2 nanometers, and bandwidth is 1.5+/- 0.2 nanometers, and reflectivity is more than or equal to
98%, optical fiber used is the large mode field optical fiber that fibre core/covering is respectively 25/400 micron；Second fiber bragg grating
Central wavelength is 1907+/- 0.2 nanometers, and bandwidth is 0.5+/- 0.05 nanometers, and reflectivity is 10+/- 3%, and optical fiber used is 25/
400 microns of large mode field optical fiber.
8. the gain switch laser of thulium-doped fiber laser pumping according to claim 1, which is characterized in that the increasing
Beneficial optical fiber, the first fiber bragg grating and the second fiber bragg grating are placed on heat sink.
9. the gain switch laser of thulium-doped fiber laser pumping according to claim 1, which is characterized in that the light
Fiber core/covering of the input terminal of fine bundling device is 105 microns/125 microns, numerical aperture 0.22, and length is 1.35 meters；
Output end fiber core covering is 20 microns/400 microns, and length is 1.26 meters.
10. the gain switch laser of thulium-doped fiber laser pumping according to claim 1, which is characterized in that described
Nanometer pulse pump source is Er-doped fiber or erbium-ytterbium co-doped fiber laser, and the central wavelength of output is that 1550 nanometers or 1560 are received
Rice, repetition rate are 100 kHz between 900 kHz.
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| CN201920087942.6U CN209169626U (en) | 2019-01-20 | 2019-01-20 | The gain switch laser of thulium-doped fiber laser pumping |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687276A (en) * | 2019-01-20 | 2019-04-26 | 北京工业大学 | The gain switch laser of thulium-doped fiber laser pumping |
| CN113708204A (en) * | 2021-09-26 | 2021-11-26 | 中国科学院半导体研究所 | Multi-cavity composite pulse laser and multi-cavity composite pulse laser amplifier |
-
2019
- 2019-01-20 CN CN201920087942.6U patent/CN209169626U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687276A (en) * | 2019-01-20 | 2019-04-26 | 北京工业大学 | The gain switch laser of thulium-doped fiber laser pumping |
| CN113708204A (en) * | 2021-09-26 | 2021-11-26 | 中国科学院半导体研究所 | Multi-cavity composite pulse laser and multi-cavity composite pulse laser amplifier |
| CN113708204B (en) * | 2021-09-26 | 2023-05-26 | 中国科学院半导体研究所 | Multi-cavity composite pulse laser and multi-cavity composite pulse laser amplifier |
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