CN106981815B - A kind of high power all -fiber cascade amplifier - Google Patents
A kind of high power all -fiber cascade amplifier Download PDFInfo
- Publication number
- CN106981815B CN106981815B CN201710315279.6A CN201710315279A CN106981815B CN 106981815 B CN106981815 B CN 106981815B CN 201710315279 A CN201710315279 A CN 201710315279A CN 106981815 B CN106981815 B CN 106981815B
- Authority
- CN
- China
- Prior art keywords
- bundling device
- fiber
- output end
- power
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- H01S3/05—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
- H01S3/06758—Tandem amplifiers
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The present invention relates to a kind of high power all -fiber cascade amplifiers, including seed source (1), amplifying stage (2), output end (3).Wherein, the output end of the output end of output end connection amplifying stage (2) of seed source (1), amplifying stage (2) connects output end (3).The present invention provides a kind of high power of strong operability and the technical solution of high brightness laser output；A kind of high power cascade amplification system is provided, has high-power output ability, has both brightness holding；Using simple MOPA structure, it is only necessary to which level-one amplification can break through the output of myriawatt high brightness laser；Amplifying stage uses both-end pumping structure, reduces heat dissipation difficulty；It easily realizes and commercially produces.
Description
Technical field
The present invention relates to laser technology field more particularly to high power optical fibre laser technical fields.
Background technique
Optical fiber laser has a wide range of applications in fields such as industrial processes, defense military, benefits most from it and has knot
The advantage that structure is compact, high conversion efficiency, perfect heat-dissipating, beam quality are better than conventional solid laser.
The progress of high power optical fibre laser technology has also driven the progress of manufacturing technology, especially in 3D printing, ship work
Industry, automobile manufacture, aircraft manufacturing etc. are related to the manufacturing of large complicated mechanical structured member.
But the main pump mode of high-capacity optical fiber laser is that semiconductor laser (LD) directly pumps at present,
It is limited to the limitation of the factors such as brightness low, Excited state big, fuel factor, the nonlinear effect of LD.Currently, 3kW and the above power
Single mode full-optical-fiber laser be all made of cascaded pump mode and realize, wherein IPG have been carried out myriawatt magnitude single fiber single mode it is defeated
Out, the Typical Representative of pump mode is cascaded for high power.It is protected based on commercial technology, IPG does not announce its Gao Gong at present
Rate cascaded pump technical detail only reports technical indicator [E.Stiles, New developments in IPG fiber
laser technology.In Proceedings of the 5th International Workshop on Fiber
Lasers.2009]。
By taking the myriawatt single mode all -fiber of IPG as an example, the full-optical-fiber laser output wavelength of cascaded pump is 1018nm,
Output of laser wavelength is 1070nm, and corresponding Excited state is about 5%, which is about that 976nm semiconductor laser directly pumps
The half of Excited state when Pu.Furthermore by the way of cascaded pump, optical fiber doping particle can largely be reduced
Photon darkens rate, and improves the service life [IEEE J.Quantum Electron.21 (7): 1212- of gain fibre
1214,2010.].The many advantages of cascaded pump technology are benefited from, the high brightness all -fiber of current commercialized 3kW or more swashs
Light device is all made of cascaded pump mode and realizes.
The high-power full-optical-fiber laser that LD is directly pumped is difficult to keep high brightness characteristic when high power laser light exports.Mesh
Most of fibre core of LD output tail optical fiber of preceding commercialization hectowatt power magnitude is at hundred microns or more, and pump brightness is 10-1~
10-2W/(μm·sr)2Between, and high 2~3 quantity of brightness of the output brightness ratio LD of the optical fiber laser under equal-wattage
Grade.Its main wave band of LD is near 980nm, the optical maser wavelength of the population conversion and Yb dosed optical fiber of pumping gain ion
Quasi- two level structures of the composition of 1080nm wave band, Excited state is about 10%, these Excited states are in high power pump Shi Douzhuan
Heat accumulation is turned to, the radiating management difficulty of high-power all-fiber laser is increased.
For this purpose, the present invention provides a kind of high power all -fiber cascade amplifier, structure is simple, only an amplifying stage,
Not only it can realize that high power laser light exported, but also high brightness can be kept.Adopt the height that cascaded pump technology realizes ytterbium doped optical fiber amplifier
Brightness high-power output, has the advantage of high light beam quality, and highest can realize the single-mode laser function of one-stage amplifier myriawatt magnitude
Rate output.
Summary of the invention
The purpose of the present invention is to provide a kind of high power all -fiber cascade amplifiers, to solve to exist in the prior art
Foregoing problems.The problem of the purpose of the present invention is to solve technical backgrounds and at present commercialized high power light
The low problem of the brightness of fibre laser, the full-optical-fiber laser of Cascaded amplification have high-power output and keep high light beam quality
Advantage.The cascaded pump mode of optical fiber laser has the advantage that pumping brightness is high, Excited state is small simultaneously, and height may be implemented
The output of power high brightness laser.It is characterized in that realizing that the high brightness high power of ytterbium doped optical fiber amplifier swashs using cascaded pump technology
Light output, has the advantage of high light beam quality, and highest can realize the laser power output of one-stage amplifier myriawatt magnitude.The present invention
High power all -fiber cascode amplifier structures be that first stage amplifier is added using seed source, structure is simple.Amplifying stage of the invention
It is middle to use both-end cascaded pump structure, reduce heat dissipation difficulty, while can further from inverse injection cascaded pump laser power,
Improve total amplification output power.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of high power all -fiber cascade amplifier, including seed source (1), amplifying stage (2), output end (3), wherein kind
The output end of the output end of output end connection amplifying stage (2) of component (1), amplifying stage (2) connects output end (3)；Seed source (1)
Including pump combiner (12), Gao Fanguang grid (13), low reflective grid (14), gain fibre (15), cladding light stripper (16), half
Conductor laser (110), semiconductor laser (111), semiconductor laser (112), semiconductor laser (113)；Amplifying stage
It (2) include forward pumping bundling device (21), backward pump bundling device (22), gain fibre (23), bundling device (241), bundling device
(242), bundling device (243) ... bundling device (24N), wherein N >=6, bundling device (251), bundling device (252), bundling device
(253), bundling device (253), bundling device (254), bundling device (255), bundling device (256), several cascaded pumps are swashed with all -fiber
Light device；It is described pumping close binder (12) pumping arm respectively with the semiconductor laser (110), the semiconductor laser
(111), the semiconductor laser (112) is connected with the tail optical fiber of the semiconductor laser (113), the pump combiner
(12) signal fibre is connected with the non-feedback end of the reflective grid of height (13), the feedback end of the reflective grid of height (13) with it is described
One end of gain fibre (15) is connected, and the other end of the gain fibre (15) connects the feedback of the low reflective grid (14)
End, the output end of the low reflective grid (14) are connected with the input terminal of the cladding light stripper (16), the cladding light filter
Except the output end of device (16) is the output end of seed source (1)；The input terminal of the forward pumping bundling device (21) connects seed
The output end of the output end in source (1), the forward pumping bundling device (21) connects the gain fibre (23), the gain fibre
(23) the other end connects the pumping output end of the backward pump bundling device (22), the letter of the backward pump bundling device (22)
Number output end is the output end of amplifying stage (2), is connected with output end (3).
Preferably, the bundling device (24N), institute are separately connected in each pumping arm of the forward pumping bundling device (21)
On each arm for stating bundling device (241), the bundling device (242), the bundling device (243) ... the bundling device (24N)
One cascaded pump full-optical-fiber laser of welding；Distinguished described in welding on each arm of the backward pump bundling device (22) and is closed
Beam device (251), the bundling device (252), the bundling device (253), the bundling device (254), the bundling device (255), institute
It states bundling device (256), the bundling device (251), the bundling device (252), the bundling device (253), the bundling device
(254), the bundling device (255), the bundling device (256) each arm on one cascaded pump full optical fiber laser of welding
Device；The bundling device (241), the bundling device (242) ... the bundling device (24N) all be the type bundling device of N × 1, wherein N
>=6, single armed tolerance power is not less than 300W；The bundling device (251), the bundling device (252), the bundling device (253),
The bundling device (254), the bundling device (255), the bundling device (256) are all the type bundling device of N × 1, wherein N >=3, list
Arm tolerance power is not less than 300W.
Preferably, the output end (3) is high power quartz end cap, can be resistant to the continuous laser output of myriawatt grade.
Preferably, the pump combiner (12) is (N+1) × 1 type, and wherein N >=4, single armed tolerance power are not less than
250W, each pumping arm and the semiconductor laser (110), the semiconductor laser (111), the semiconductor laser
Device (112) is connected with the tail optical fiber of the semiconductor laser (113) by welding.
Preferably, the reflectivity of the described reflective grid (13) of height is not less than 90%, and the range of central wavelength is 1065~
1085nm, tolerance power are not less than 1kW；The reflectivity of the low reflective grid (14) is not higher than 30%, and the range of central wavelength is
1065~1085nm, tolerance power are not less than 1kW.
Preferably, the gain fibre (15), the gain fibre (23) are doubly clad optical fiber, and doping particle is ytterbium
Ion.
Preferably, the cladding light stripping ability of the cladding light stripper (16) is not less than 200W.
Preferably, the semiconductor laser (110), semiconductor laser (111), semiconductor laser (112), partly lead
Body laser (113) all exports for band tail optical fiber, and output power is not less than 150W.
Preferably, the forward pumping bundling device (21) is (N+1) × 1 type, wherein N >=6, and single armed is resistant to high brightness and swashs
Optical power is not less than 1kW；The backward pump bundling device (22) is (N+1) × 1 type, wherein N >=6, and single armed is resistant to high brightness and swashs
Optical power is not less than 800W.
Preferably, several cascaded pump full-optical-fiber lasers are the full optical fiber laser of direct cavity resonator structure output
Device, the range of laser center wavelength are 1013~1023nm, and output power is not less than 250W, and output tail optical fiber is that double clad passes energy
Optical fiber.
The beneficial effects of the present invention are: the present invention realizes that the high brightness of ytterbium doped optical fiber amplifier is high using cascaded pump technology
Power laser output provides a kind of high power of strong operability and the technical solution of high brightness laser output；It provides a kind of high
Power cascades amplification system, has high-power output ability, has both brightness holding；Using simple MOPA structure, it is only necessary to level-one
Amplification can break through the output of myriawatt high brightness laser；Amplifying stage uses both-end pumping structure, reduces heat dissipation difficulty；Easily realize commercialization
Production.
Detailed description of the invention
Fig. 1 is high power all -fiber cascode amplifier structures schematic diagram, wherein 1 is seed source, and 2 be amplifying stage, and 3 be defeated
Outlet；12 be pump combiner, and 13 be high reflective grid, and 14 be low reflective grid, and 15 be gain fibre, and 16 be cladding light stripper,
110,111,112,113 be semiconductor laser respectively；21 be forward pumping bundling device, and 22 be backward pump bundling device, 23
It is gain fibre, 241,242,243 ... 24N, 251,252,253,254,255,256 be bundling device respectively.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, it is not used to
Limit the present invention.
The present invention discloses a kind of high power all -fiber cascade amplifier, it is characterized in that adopting the realization of cascaded pump technology mixes ytterbium light
The high brightness high power laser of fiber amplifier exports, and has the advantage of high light beam quality, highest can realize one-stage amplifier myriawatt
The laser power of magnitude exports.Its structural schematic diagram is as shown in Figure 1, its constructional device includes a seed source 1, an amplifying stage 2, one
Output end 3.Wherein the input terminal of the output end connection amplifying stage 2 of seed source 1, the output end of amplifying stage 2 connect output end 3.
Seed source 1 is straight line lumen type cavity resonator structure, provides seed signal light source for amplifying stage.Its structure includes a pumping
The high reflective grid 13 of its device 12, one of conjunction beam, the low reflective grid 14 of a gain fibre 15, one, a cladding light stripper 16, semiconductor swash
Light device 110, semiconductor laser 111, semiconductor laser 112, semiconductor laser 113.
Wherein pumping close the pumping arm of binder 12 respectively with semiconductor laser 110, semiconductor laser 111, partly lead
Body laser 112, semiconductor laser 113 tail optical fiber be connected, pump combiner 12 be (N+1) × 1 type (N >=4), single armed is resistance to
It is not less than 250W by power, each pumping arm is connected with the tail optical fiber of semiconductor laser by welding, the tail optical fiber of pumping arm
It is all consistent with such as fine diameter of tail optical fiber parameter of semiconductor laser, numerical aperture, usually 105 μm, NA.0.15 or 200 μm,
NA.0.22.Semiconductor laser 110, semiconductor laser 111, semiconductor laser 112, semiconductor laser 113 are all band
Tail optical fiber output, output power are not less than 150W, and the number of semiconductor laser is not less than 4.The signal of pump combiner 12 is fine
It is connected with the non-feedback end of high reflective grid 13 by welding, is bragg grating, reflectivity is not less than 90%, center
Wavelength is 1075 ± 10nm, and tolerance power is not less than 1kW, the signal fibre parameter of the optical fiber parameter used and pump combiner 12
Unanimously, usually 15/130 μm, NA.0.06/0.46；20/400 μm, NA.0.06/0.46 equal-specification.
The feedback end of high reflective grid 13 is connected with one end of gain fibre 15, and gain fibre 15 is doubly clad optical fiber,
Doping particle is ytterbium ion, and doping way can adulterate for solute doping or nano particle, and doping concentration is not less than 6000ppm.Increase
The other end of beneficial optical fiber 15 connects the feedback end of low reflective grid 14, is bragg grating, and reflectivity is not higher than 30%, in
A length of 1075 ± the 10nm of cardiac wave, tolerance power are not less than 1kW.The input of the output end and cladding light stripper 16 of low reflective grid 14
End is connected, and the cladding light stripping ability of cladding light stripper 16 is not less than 200W, and index-matching fluid is used to remove covering
Light, bottom are connected with water cooling safeguard measure.The output end of cladding light stripper 16 is the output end of seed source 1, and seed source is defeated
Laser power out is not less than 350W, and laser center wavelength is 1075 ± 10nm.
Amplifying stage 2 is the amplifier of both-end pumping structure.It includes a forward pumping bundling device 21, backward pump conjunction beam
Device 22, a gain fibre 23, a bundling device 241, a bundling device 242 ... a bundling device 24N, a bundling device 251, a bundling device
252, a bundling device 253, a bundling device 253, a bundling device 254, a bundling device 255, a bundling device 256, several cascaded pumps
Use full-optical-fiber laser.
The wherein output end of the input terminal connection seed source 1 of forward pumping bundling device 21, forward pumping bundling device 21 is (N+
1) × 1 type (N >=6), each of which single armed are resistant to high brightness laser power and are not less than 1kW, each pump of forward pumping bundling device 21
On the arm of Pu all one bundling device 241 of welding, bundling device 242 ... welding on each arm of bundling device 24N (N >=6), bundling device 24N
One cascaded pump full-optical-fiber laser, each pumping arm of bundling device 24N can tolerate laser power and be higher than 300W, the grade
Join pumping full-optical-fiber laser be direct cavity resonator structure output full-optical-fiber laser, laser center wavelength be 1018 ±
5nm, output power are not less than 250W, and output tail optical fiber is double clad energy-transmission optic fibre.
The output end of forward pumping bundling device 21 connects gain fibre 23, is Double Cladding Ytterbium Doped Fiber, the fibre of optical fiber
The signal of diameter parameter and forward pumping bundling device 21 is fine consistent, and generally 30/250 μm, NA.0.06/0.46；20/400 μm,
NA.0.06/0.46 equal-specification.The pumping output end of the other end connection backward pump bundling device 22 of gain fibre 23, it is backward to pump
Pu bundling device 22 is (N+1) × 1 type (N >=6), and single armed is resistant to high brightness laser power and is not less than 800W, backward pump bundling device
Binder 251- bundling device 256 is closed in welding one on 22 each arm, and bundling device 251, bundling device 253, closes beam at bundling device 252
Device 253, bundling device 254, bundling device 255, bundling device 256 are all N × 1 (N >=3) type bundling device, and single armed tolerance power is not less than
300W.One cascaded pump full-optical-fiber laser of welding, the cascade on each arm of bundling device 251-- bundling device 256
Pumping is consistent with the model parameter of welding in the pumping arm of bundling device 24N with full-optical-fiber laser, and cascaded pump is swashed with all -fiber
The quantity of light device is by the quantity and bundling device 251 of overall bundling device 24N, bundling device 252, bundling device 253, bundling device 253, conjunction beam
Device 254, bundling device 255, bundling device 256 determine.
The signal output end of backward pump bundling device 22 is the output end of amplifying stage 2, is connected with output end 3.Output
End 3 is a high power quartz end cap, can be resistant to the continuous laser output of myriawatt grade.
The power for the cascaded pump light that forward direction can import is not less than: 250W × 6 × 6=9000W；
The power for the cascaded pump light that can be imported backward is not less than: 250W × 6 × 3=4500W；
Before removing to fusing point and device own loss total 5% (experiments verify that this loss is lower than 4%, forward direction pump
The single pumping arm of Pu bundling device 12 (N+1) × 1 (N >=6) can import 1800W laser power), the grade of amplifying stage can be imported into
Connection pumping light power is 8550W；Backward fusing point and device own loss total 8%, can imported into the cascade rotary pump of amplifying stage
Pu optical power is 4140W, and according to experimental verification, the transformation efficiency of cascaded pump light is higher than 84%, then amplifying stage is available swashs
Optical power is (8550+4140) W × 84%=10659.5W, in addition the 350W laser power of seed source part, then deduct entirety
2% loss of fusing point, always exports the power output of available 10500W or more.Since the quantum loss of cascaded pump is low, with
On be all Conservative estimation data, the transformation efficiency of the cascaded pump light of actual experiment verifying is up to 90%, so the list of this programme
The laser power output of myriawatt magnitude may be implemented in grade amplifier.In 1 part of low-power seed source, the excellent of resonant cavity can be passed through
Change design, while cladding light is carried out to filter out measure, can ensure single-mode output.And cascaded pump mode is due to Excited state
Low, thermic load is low, and the laser of high brightness can be kept to export substantially.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.In addition, the above-mentioned definition to each element and method be not limited in the various specific structures mentioned in embodiment,
Shape or mode, those of ordinary skill in the art simply can be changed or be replaced to it, such as: provide for simple replacement of cascaded pump
Output power, wavelength and the quantity of full-optical-fiber laser, all fall within the scope and spirit of the invention.
By using above-mentioned technical proposal disclosed by the invention, obtained following beneficial effect: providing one kind can operate
Property strong high power and high brightness laser output technical solution；A kind of high power cascade amplification system is provided, has high power
Fan-out capability has both brightness holding；Using simple MOPA structure, it is only necessary to which it is defeated that level-one amplification can break through myriawatt high brightness laser
Out；Amplifying stage uses both-end pumping structure, reduces heat dissipation difficulty；It easily realizes and commercially produces.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
Depending on protection scope of the present invention.
Claims (10)
1. a kind of high power all -fiber cascade amplifier, it is characterised in that: using low-power optical-fiber laser as seed source, to kind
Component carries out the cascade pumped amplifier amplification of single-stage both-end pumping structure, and the high brightness laser output of myriawatt magnitude can be realized,
Structure of the invention includes seed source (1), amplifying stage (2), output end (3), wherein the output end of seed source (1) connects amplifying stage
(2) output end of output end, amplifying stage (2) connects output end (3)；Seed source (1) includes pump combiner (12), Gao Fanguang
Grid (13), low reflective grid (14), gain fibre (15), cladding light stripper (16), 4 semiconductor lasers；Amplifying stage (2) packet
Include forward pumping bundling device (21), backward pump bundling device (22), gain fibre (23), N number of bundling device, N >=6,6 conjunction beams
Device, several cascaded pump full-optical-fiber lasers；The pumping arm of the pump combiner (12) swashs with 4 semiconductors respectively
Light device, tail optical fiber are connected, and the signal fibre of the pump combiner (12) is connected with the non-feedback end of the reflective grid of height (13),
The feedback end of the reflective grid of height (13) is connected with one end of the gain fibre (15), the gain fibre (15) it is another
End connects the feedback end of the low reflective grid (14), the output end of the low reflective grid (14) and the cladding light stripper (16)
Input terminal be connected, the output end of the cladding light stripper (16) is the output end of seed source (1)；The forward pumping
The output end of the output end of input terminal connection seed source (1) of bundling device (21), the forward pumping bundling device (21) connects institute
It states gain fibre (23), the other end of the gain fibre (23) connects the pumping output of the backward pump bundling device (22)
End, the signal output end of the backward pump bundling device (22) is the output end of amplifying stage (2), is connected with output end (3).
2. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that the forward pumping closes
It is separately connected in each pumping arm of beam device (21) bundling device (24N), the bundling device (241), the bundling device
(242) ... one cascaded pump full-optical-fiber laser of welding on each arm of the bundling device (24N)；The backward pump
Bundling device (251), the bundling device (252), the bundling device described in welding are distinguished on each arm of Pu bundling device (22)
(253), the bundling device (254), the bundling device (255), the bundling device (256), the bundling device (251), the conjunction
Beam device (252), the bundling device (253), the bundling device (254), the bundling device (255), the bundling device (256) it is every
All one cascaded pump full-optical-fiber laser of welding on a arm；The bundling device (241), the bundling device (242) ... institute
Stating bundling device (24N) all is the type bundling device of N × 1, wherein N >=6, and single armed tolerance power is not less than 300W；The bundling device
(251), the bundling device (252) ... the bundling device (256) is all the type bundling device of N × 1, wherein N >=3, and single armed is resistant to function
Rate is not less than 300W.
3. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that the output end (3)
It is high power quartz end cap.
4. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that beam is closed in the pumping
Device (12) is (N+1) × 1 type, wherein N >=4, and single armed tolerance power is not less than 250W, each pumping arm with described 4 half
The tail optical fiber of conductor laser is connected by welding.
5. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that the reflective grid of height
(13) reflectivity is not less than 90%, and the range of central wavelength is 1065~1085nm, and tolerance power is not less than 1kW；It is described low
The reflectivity of reflective grid (14) is not higher than 30%, and the range of central wavelength is 1065~1085nm, and tolerance power is not less than 1kW.
6. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that the gain fibre
(15), the gain fibre (23) is doubly clad optical fiber, and doping particle is ytterbium ion.
7. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that the cladding light filters out
The cladding light stripping ability of device (16) is not less than 200W.
8. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that 4 semiconductors
Laser is all that band tail optical fiber exports, and output power is not less than 150W.
9. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that the forward pumping closes
Beam device (21) is (N+1) × 1 type, wherein N >=6, and single armed is resistant to high brightness laser power and is not less than 1kW；The backward pump
Bundling device (22) is (N+1) × 1 type, wherein N >=6, and single armed is resistant to high brightness laser power and is not less than 800W.
10. a kind of high power all -fiber cascade amplifier according to claim 1, which is characterized in that several cascades
The pumping full-optical-fiber laser that full-optical-fiber laser is that direct cavity resonator structure exports, the range of laser center wavelength are
1013~1023nm, output power are not less than 250W, and output tail optical fiber is double clad energy-transmission optic fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710315279.6A CN106981815B (en) | 2017-05-08 | 2017-05-08 | A kind of high power all -fiber cascade amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710315279.6A CN106981815B (en) | 2017-05-08 | 2017-05-08 | A kind of high power all -fiber cascade amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106981815A CN106981815A (en) | 2017-07-25 |
| CN106981815B true CN106981815B (en) | 2019-07-26 |
Family
ID=59343522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710315279.6A Active CN106981815B (en) | 2017-05-08 | 2017-05-08 | A kind of high power all -fiber cascade amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106981815B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981815B (en) * | 2017-05-08 | 2019-07-26 | 中国兵器装备研究院 | A kind of high power all -fiber cascade amplifier |
| CN109244815A (en) * | 2018-09-27 | 2019-01-18 | 中国兵器装备研究院 | Integrated high power bundling device |
| CN109167237A (en) * | 2018-10-22 | 2019-01-08 | 南京理工大学 | Inhibit the 8KW narrow cable and wide optical fiber laser and its construction method of nonlinear effect |
| CN110190495A (en) * | 2019-06-11 | 2019-08-30 | 深圳市创鑫激光股份有限公司 | The high power single fiber of closed-loop control exports continuous full-optical-fiber laser system |
| CN111244736A (en) * | 2020-01-16 | 2020-06-05 | 中国科学院西安光学精密机械研究所 | Seed amplification pump sharing MOPA fiber laser and laser generation method |
| CN111162436A (en) * | 2020-01-17 | 2020-05-15 | 成都翱翔拓创光电科技合伙企业(有限合伙) | Pulse fiber laser based on side pumping technology |
| CN113851917A (en) * | 2021-11-08 | 2021-12-28 | 山东海富光子科技股份有限公司 | L-waveband high-power ytterbium-doped fiber laser adopting bidirectional pump hybrid pumping |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219043A (en) * | 1997-12-05 | 1999-06-09 | 清华大学 | Method of realizing dynamic gain spectrum equalization of wave-sharing complex system and its equalizing amplifier |
| CN103199420A (en) * | 2013-04-22 | 2013-07-10 | 山东海富光子科技股份有限公司 | Single-fiber simple-oscillator kilowatt-grade all-fiber laser |
| CN103236629A (en) * | 2013-04-24 | 2013-08-07 | 广东汉唐量子光电科技有限公司 | Polarization-stable optical fiber laser cascade amplifier |
| CN105048267A (en) * | 2015-09-10 | 2015-11-11 | 电子科技大学 | Intermediate infrared super-continuum spectrum laser light source |
| CN105322419A (en) * | 2015-02-16 | 2016-02-10 | 深圳市欧凌镭射科技有限公司 | Pulse fiber laser |
| CN105337147A (en) * | 2015-11-30 | 2016-02-17 | 深圳市创鑫激光股份有限公司 | Optical fiber laser |
| CN205583366U (en) * | 2016-04-26 | 2016-09-14 | 芜湖安瑞激光科技有限公司 | Ultrashort pulsed optical fibre laser ware system with graphite alkene saturated absorbing body mode locking |
| CN106129795A (en) * | 2016-08-31 | 2016-11-16 | 山东海富光子科技股份有限公司 | Single frequency optical fiber laser with single-frequency semiconductor laser as seed source |
| CN106711750A (en) * | 2017-02-07 | 2017-05-24 | 中科先为激光科技（北京）有限公司 | Quasi-continuous fiber laser device capable of synchronously synthesizing pulse |
| CN106981815A (en) * | 2017-05-08 | 2017-07-25 | 中国兵器装备研究院 | A kind of high power all -fiber cascade amplifier |
-
2017
- 2017-05-08 CN CN201710315279.6A patent/CN106981815B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219043A (en) * | 1997-12-05 | 1999-06-09 | 清华大学 | Method of realizing dynamic gain spectrum equalization of wave-sharing complex system and its equalizing amplifier |
| CN103199420A (en) * | 2013-04-22 | 2013-07-10 | 山东海富光子科技股份有限公司 | Single-fiber simple-oscillator kilowatt-grade all-fiber laser |
| CN103236629A (en) * | 2013-04-24 | 2013-08-07 | 广东汉唐量子光电科技有限公司 | Polarization-stable optical fiber laser cascade amplifier |
| CN105322419A (en) * | 2015-02-16 | 2016-02-10 | 深圳市欧凌镭射科技有限公司 | Pulse fiber laser |
| CN105048267A (en) * | 2015-09-10 | 2015-11-11 | 电子科技大学 | Intermediate infrared super-continuum spectrum laser light source |
| CN105337147A (en) * | 2015-11-30 | 2016-02-17 | 深圳市创鑫激光股份有限公司 | Optical fiber laser |
| CN205583366U (en) * | 2016-04-26 | 2016-09-14 | 芜湖安瑞激光科技有限公司 | Ultrashort pulsed optical fibre laser ware system with graphite alkene saturated absorbing body mode locking |
| CN106129795A (en) * | 2016-08-31 | 2016-11-16 | 山东海富光子科技股份有限公司 | Single frequency optical fiber laser with single-frequency semiconductor laser as seed source |
| CN106711750A (en) * | 2017-02-07 | 2017-05-24 | 中科先为激光科技（北京）有限公司 | Quasi-continuous fiber laser device capable of synchronously synthesizing pulse |
| CN106981815A (en) * | 2017-05-08 | 2017-07-25 | 中国兵器装备研究院 | A kind of high power all -fiber cascade amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106981815A (en) | 2017-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106981815B (en) | A kind of high power all -fiber cascade amplifier | |
| CN107623246B (en) | Fiber core co-band pumping fiber laser | |
| EP1761978B1 (en) | High-power fibre amplifier and fibre oscillator | |
| CN103560382A (en) | Single fiber myriawatt-level all-optical-fiber laser system based on same band pumping technology | |
| CN103701022B (en) | A kind of dual resonant cavity all -fiber Mode-locked laser device | |
| US20050100073A1 (en) | Cladding-pumped quasi 3-level fiber laser/amplifier | |
| CN112563872B (en) | Dual-wavelength pumping thulium-doped laser based on GSA and ESA | |
| TWI380542B (en) | Laser apparatus with all optical-fiber | |
| CN107370011A (en) | Large-power optical fiber amplifier | |
| US9634458B2 (en) | Pump recycling integrated amplifier | |
| CN108092124B (en) | Optical fiber laser | |
| Tao et al. | Cross relaxation in Tm-doped fiber lasers | |
| CN110299663B (en) | All-fiber dual-wavelength pump thulium-doped fiber laser | |
| CN109270614B (en) | Method for manufacturing cascade multi-type nonlinear effect suppression type inclined grating | |
| CN105098591A (en) | Continuous wave self-Raman laser of wavelength-locked LD resonance pumping | |
| CN212517877U (en) | High-efficiency short-gain fiber laser | |
| CN102931573A (en) | Parameter-mismatched fiber laser | |
| CN110690639B (en) | High efficiency injection locked fiber taper laser | |
| CN112152057A (en) | Quick response fiber laser | |
| CN214069074U (en) | Saddle-shaped gain optical fiber and all-fiber oscillator based on saddle-shaped gain optical fiber | |
| CN111817122A (en) | Multi-pumping all-fiber laser based on cascade pumping structure | |
| CN108471040A (en) | Parameter-mismatchedfiber fiber laser | |
| CN220985115U (en) | Kilowatt level single-mode ytterbium-doped fiber oscillator | |
| CN112736630A (en) | Saddle-shaped gain optical fiber and all-fiber oscillator based on saddle-shaped gain optical fiber | |
| CN221407968U (en) | 1018Nm fiber laser oscillator and cascade pump laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230301 Address after: 100089 No. 10 Lane drive, Beijing, Haidian District Patentee after: CHINA ORDNANCE EQUIPMENT Research Institute Patentee after: Hubei Huazhong Changjiang Photoelectric Technology Co.,Ltd. Address before: 100089 No. 10 Lane drive, Beijing, Haidian District Patentee before: CHINA ORDNANCE EQUIPMENT Research Institute |
|
| TR01 | Transfer of patent right |