CN207052929U - A kind of high-energy nanosecond pulse full-optical-fiber laser based on repeatedly incoherent conjunction beam - Google Patents
A kind of high-energy nanosecond pulse full-optical-fiber laser based on repeatedly incoherent conjunction beam Download PDFInfo
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- CN207052929U CN207052929U CN201720793605.XU CN201720793605U CN207052929U CN 207052929 U CN207052929 U CN 207052929U CN 201720793605 U CN201720793605 U CN 201720793605U CN 207052929 U CN207052929 U CN 207052929U
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Abstract
A kind of high-energy nanosecond pulse full-optical-fiber laser based on repeatedly incoherent conjunction beam.It includes nanosecond pulse seed laser light source, fiber optic splitter, at least fiber amplifier, two-stage optical-fiber bundling device and laser export head；It is provided by the utility model based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam by swash combiner technology by a few road nanosecond pulse optical-fiber lasers carry out it is multistage close beam, obtain that mean power reaches several kilowatts of magnitudes, pulse energy reaches the nanosecond pulse optical fiber lasers of hundreds of MJs of magnitudes；Whole system realizes all-fiber simultaneously, possesses big mean power height, pulse energy, small volume, easy care, reliable and stable excellent in performance.
Description
Technical field
The utility model belongs to optical fiber and laser technology field, and in particular to a kind of based on the repeatedly incoherent high energy for closing beam
Measure nanosecond pulse full-optical-fiber laser.
Technical background
Because traditional nanosecoud pulse laser is limited by factors such as nonlinear effect, energy stores, pulse energy one
As in several MJs of magnitudes, mean power is now widely used for laser marking, laser engraving field in hectowatt magnitude.With should
With the continuous expansion in field, mean power and pulse energy to nanosecond pulse full-optical-fiber laser propose higher requirement.
For example, laser cleaning generally requires a few hectowatt magnitudes with the mean power of laser, especially pulse energy needs to reach tens
MJ magnitude, even hundreds of MJs of magnitudes, it is therefore desirable to which to solve, mean power is low, pulse energy is small asks more technologies
Topic, to meet requirement of the emerging application field to optical fiber laser.
Application No. 201610871205.6, a kind of entitled " high-energy nanosecond pulse based on incoherent conjunction beam
One kind is disclosed in the Chinese invention patent application of full-optical-fiber laser " high-energy nanosecond arteries and veins is realized based on incoherent conjunction beam technology
Wash the technical scheme of fibre laser off, but its shortcoming is to be only limitted to once close beam, therefore the full-optical-fiber laser that can be obtained
Pulse energy typically can only achieve tens MJs of magnitudes.Continue if desired improve laser pulse energy to hundreds of MJs amount
Level, then need to develop new technology.
The content of the invention
In order to solve the above problems, the utility model aims to provide a kind of mean power and reaches several kilowatts of magnitudes, pulse energy
Amount reaches the high-energy nanosecond pulse all -fiber based on repeatedly incoherent conjunction beam of the high-energy of hundred MJs of magnitudes, high-average power
Laser.
In order to achieve the above object, the high-energy nanosecond pulse provided by the utility model based on repeatedly incoherent conjunction beam is complete
Optical fiber laser include nanosecond pulse seed laser light source, fiber optic splitter, fiber amplifier, at least two-stage optical-fiber bundling device and
Laser export head；Wherein the input of the output end of nanosecond pulse seed laser light source and fiber optic splitter connects；Fiber beam splitting
The output end of device is connected with the input of multiple fiber amplifiers simultaneously；Multiple fiber amplifiers are divided into some groups, every group
The output end of all fiber amplifiers is connected with the input of a first order optical-fiber bundling device simultaneously；Some first order optical fiber point
The output end of beam device is connected with the input of a second level optical-fiber bundling device simultaneously, the output of some second level optical-fiber bundling devices
The input again with a next stage optical-fiber bundling device is held to be connected, output end and the laser export head of afterbody optical-fiber bundling device
Connection.
Described nanosecond pulse seed laser light source is partly led using the butterfly of actively Q-switched optical fiber laser and current-regulation type
One kind in body laser.
Described actively Q-switched optical fiber laser includes the first semiconductor pumped LASER Light Source, the first fibre pump signal closes
Beam device, high anti-fiber grating, the first Double Cladding Ytterbium Doped Fiber, fiber coupling acousto-optic modulator, low anti-fiber grating and the first light
Fiber isolator；The output end of wherein first semiconductor pumped LASER Light Source and the pumping end of the first fibre pump signal bundling device connect
Connect；The input optical fibre end face of first fibre pump signal bundling device is chamfer, output optical fibre and high anti-fiber grating one end phase
Connection, the high anti-fiber grating other end are connected with first Double Cladding Ytterbium Doped Fiber one end, the first Double Cladding Ytterbium Doped Fiber other end
It is connected with the input of fiber coupling acousto-optic modulator, the output optical fibre of fiber coupling acousto-optic modulator and low anti-fiber grating one
End connection, the input optical fibre welding of the low anti-fiber grating other end and the first fibre optic isolater.
The butterfly semiconductor laser of described current-regulation type includes pulse current driver, fiber coupling butterfly is partly led
Body laser, output optical fibre and the second fibre optic isolater；The wherein output optical fibre connection fiber coupling butterfly of pulse current driver
The input of shape semiconductor laser；The output end of fiber coupling butterfly semiconductor laser passes through output optical fibre and the second optical fiber
The input connection of isolator.
The fiber amplifier level that described fiber amplifier is sequentially connected by least two-stage forms；Every grade of fiber amplifier level includes
Second semiconductor pumped LASER Light Source, the second fibre pump signal bundling device, the second Double Cladding Ytterbium Doped Fiber and the 3rd optical fiber every
From device；The pumping end of wherein the second fibre pump signal bundling device connects the second semiconductor pumped LASER Light Source, output end and the
One end of two Double Cladding Ytterbium Doped Fibers is connected, and the other end of the second Double Cladding Ytterbium Doped Fiber is connected with the 3rd fibre optic isolater；Before
The output end of 3rd fibre optic isolater of one-level fiber amplifier level is closed with the second fibre pump signal of rear stage fiber amplifier level
The input of beam device is connected；The input and fiber optic splitter of second fibre pump signal bundling device of first order fiber amplifier level
Output end be connected, output end and the first order optical-fiber bundling device phase of the 3rd fibre optic isolater of afterbody fiber amplifier level
Even.
The second semiconductor pumped LASER Light Source in described first order fiber amplifier level is partly led using fiber coupling multimode
Body laser, operation wavelength are located at 915nm, and output optical fibre is 105 μm/125 μm optical fiber, and fibre core NA is 0.22, and power output is
20W；Second fibre pump signal bundling device uses the fibre pump signal bundling device of (2+1) × 1；Second Double Cladding Ytterbium Doped Fiber
Core diameter/inner cladding is 20 μm/130 μm, and fibre core NA is 0.08, and the absorption coefficient to laser at 915nm is 3dB/m.
The second semiconductor pumped LASER Light Source in described second level fiber amplifier is partly led using fiber coupling multimode
Body laser, operation wavelength are located at 915nm, and output optical fibre is 105 μm/125 μm optical fiber, and fibre core NA is 0.22, and power output is
30W；Second fibre pump signal bundling device uses the fibre pump signal bundling device of (18+1) × 1；Second Double Cladding Ytterbium Doped Fiber
Core diameter/inner cladding be 50 μm/400 μm, fibre core NA be 0.08, the absorption coefficient to laser at 915nm is 2dB/m.
Described fiber optic splitter is 1*N fiber optic splitters, N >=2；First order optical-fiber bundling device is M*1 optical-fiber bundling devices,
M >=2, and M is N aliquot.
The input optical fibre quantity of described second level optical-fiber bundling device is equal with the quantity of first order optical-fiber bundling device.
Described laser export head is quartz glass end cap, and suppression self-excitation is coated with 8 degree with tilt angle, and on end face
The flashlight antireflection film of vibration.
Provided by the utility model passed through based on the repeatedly high-energy nanosecond pulse full-optical-fiber laser of incoherent conjunction beam is swashed
A few road nanosecond pulse optical-fiber lasers are carried out multistage conjunction beam by combiner technology, are obtained mean power and are reached several kilowatts of magnitudes, pulses
Energy reaches the nanosecond pulse optical fiber laser of hundreds of MJs of magnitudes；Whole system realizes all-fiber simultaneously, possesses average
Power is high, pulse energy is big, small volume, easy care, reliable and stable excellent in performance.
Brief description of the drawings
Fig. 1 is provided by the utility model based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser knot for closing beam
Structure schematic diagram.
Fig. 2 is provided by the utility model based in the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam
Actively Q-switched optical fiber laser structure schematic diagram.
Fig. 3 is provided by the utility model based in the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam
The butterfly semiconductor laser structure schematic diagram of current-regulation type.
Fig. 4 is provided by the utility model based in the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam
Fiber amplifier structural representation.
Embodiment
The utility model will be further described below in conjunction with the accompanying drawings：
As shown in figure 1, provided by the utility model swashed based on the repeatedly incoherent high-energy nanosecond pulse all -fiber for closing beam
Light device includes nanosecond pulse seed laser light source 1-1, fiber optic splitter 1-2, at least fiber amplifier 1-3, two-stage optical-fiber bundling
Device 1-4,1-5 and laser export head 1-6；Wherein nanosecond pulse seed laser light source 1-1 output end is with fiber optic splitter 1-2's
Input connects；Fiber optic splitter 1-2 output end is connected with multiple fiber amplifier 1-3 input simultaneously；Multiple optical fiber
Amplifier 1-3 be divided into all fiber amplifier 1-3 in some groups, every group output end simultaneously with a first order optical-fiber bundling
Device 1-4 input connection；Some first order fiber optic splitter 1-4 output end simultaneously with a second level optical-fiber bundling device 1-
5 input connection, some second level optical-fiber bundling device 1-5 output end input with a next stage optical-fiber bundling device again
Connection, afterbody optical-fiber bundling device 1-i output end are connected with laser export head 1-6.
Described nanosecond pulse seed laser light source 1-1 uses the butterfly of actively Q-switched optical fiber laser 2 and current-regulation type
One kind in semiconductor laser 3.
As shown in Fig. 2 described actively Q-switched optical fiber laser 2 includes the first semiconductor pumped LASER Light Source 2-1, first
Fibre pump signal bundling device 2-2, high anti-fiber grating 2-3, the first Double Cladding Ytterbium Doped Fiber 2-4, fiber coupling acousto-optic modulation
Device 2-5, low anti-fiber grating 2-6 and the first fibre optic isolater 2-7；Wherein first semiconductor pumped LASER Light Source 2-1 output
End is connected with the first fibre pump signal bundling device 2-2 pumping end；First fibre pump signal bundling device 2-2 input optical fibre
End face is chamfer, and output optical fibre is connected with high anti-fiber grating 2-3 one end, the high anti-fiber grating 2-3 other ends and first
Double Cladding Ytterbium Doped Fiber 2-4 one end connects, the first Double Cladding Ytterbium Doped Fiber 2-4 other ends and fiber coupling acousto-optic modulator 2-5
Input connection, fiber coupling acousto-optic modulator 2-5 output optical fibre is connected with low anti-fiber grating 2-6 one end, low reflective
The fine grating 2-6 other ends and the first fibre optic isolater 2-7 input optical fibre weld.
As shown in figure 3, the butterfly semiconductor laser 3 of described current-regulation type includes pulse current driver 3-1, light
Fibre coupling butterfly semiconductor laser 3-2, output optical fibre 3-3 and the second fibre optic isolater 3-4；Wherein pulse current driver 3-
1 output optical fibre connection fiber coupling butterfly semiconductor laser 3-2 input；Fiber coupling butterfly semiconductor laser 3-
2 output end is connected by output optical fibre 3-3 with the second fibre optic isolater 3-4 input.
As shown in figure 4, the fiber amplifier level that described fiber amplifier 1-3 is sequentially connected by least two-stage forms, optical fiber
Amplifying stage, can also be by the way of backward pump by the way of forward pumping；Every grade of fiber amplifier level includes the second half and led
Body pumping laser light source 4-1, the second fibre pump signal bundling device 4-2, the second Double Cladding Ytterbium Doped Fiber 4-3 and the 3rd optical fiber every
From device 4-4；Wherein the second fibre pump signal bundling device 4-2 pumping end connects the second semiconductor pumped LASER Light Source 4-1,
Output end is connected with the second Double Cladding Ytterbium Doped Fiber 4-3 one end, the second Double Cladding Ytterbium Doped Fiber 4-3 other end and the 3rd
Fibre optic isolater 4-4 is connected；3rd fibre optic isolater 4-4 of previous stage fiber amplifier level output end and rear stage fiber amplifier
Second fibre pump signal bundling device 4-2 of level input is connected；Second fibre pump signal of first order fiber amplifier level
Bundling device 4-2 input is connected with fiber optic splitter 1-2 output end, the 3rd Fiber isolation of afterbody fiber amplifier level
Device 4-4 output end is connected with first order optical-fiber bundling device 1-4.
The second semiconductor pumped LASER Light Source 4-1 in described first order fiber amplifier level is using fiber coupling multimode half
Conductor laser, operation wavelength are located at 915nm, and output optical fibre is 105 μm/125 μm optical fiber, and fibre core NA is 0.22, power output
For 20W；Second fibre pump signal bundling device 4-2 uses the fibre pump signal bundling device of (2+1) × 1；Second double clad mixes ytterbium
Optical fiber 4-3 core diameter/inner cladding is 20 μm/130 μm, and fibre core NA is 0.08, and the absorption coefficient to laser at 915nm is 3dB/m.
The second semiconductor pumped LASER Light Source 4-1 in described second level fiber amplifier is using fiber coupling multimode half
Conductor laser, operation wavelength are located at 915nm, and output optical fibre is 105 μm/125 μm optical fiber, and fibre core NA is 0.22, power output
For 30W；Second fibre pump signal bundling device 4-2 uses the fibre pump signal bundling device of (18+1) × 1；Second double clad is mixed
Ytterbium optical fiber 4-3 core diameter/inner cladding is 50 μm/400 μm, and fibre core NA is 0.08, and the absorption coefficient to laser at 915nm is
2dB/m。
In addition, only showing two-stage in Fig. 4, more power, more high energy can be produced by increasing the series of fiber amplifier level certainly
The laser of amount.
Described fiber optic splitter 1-2 is 1*N fiber optic splitters, N >=2；First order optical-fiber bundling device 1-4 is M*1 optical fiber
Bundling device, M >=2, and M are N aliquot.
Described second level optical-fiber bundling device 1-5 input optical fibre quantity and first order optical-fiber bundling device 1-4 quantity phase
Deng.
Described laser export head 1-6 is quartz glass end cap, and suppression is coated with 8 degree with tilt angle, and on end face
Self-oscillatory flashlight antireflection film.
Now by provided by the utility model based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser work for closing beam
It is described below as principle：
When nanosecond pulse seed laser light source 1-1 uses actively Q-switched optical fiber laser 2, the first semiconductor pumped laser
The pump light that light source 2-1 is sent is coupled among optical fiber by the first fibre pump signal bundling device 2-2, and pump light is through too high anti-
Enter the first Double Cladding Ytterbium Doped Fiber 2-4 after fiber grating 2-3, the first Double Cladding Ytterbium Doped Fiber 2-4 absorptive pumping light sends sharp
Light, laser vibrate between high anti-fiber grating 2-3 and low anti-fiber grating 2-6, controlled by fiber coupling acousto-optic modulator 2-5
Duration of oscillation processed is so as to produce ps pulsed laser and ns pulsed laser, and the ps pulsed laser and ns pulsed laser after the first fibre optic isolater 2-7 by entering optical fiber
Beam splitter 1-2, now the mean power of laser is several watts.First fibre optic isolater 2-7 can prevent from returning to light damage actively Q-switched
Optical fiber laser 2.Above-mentioned ps pulsed laser and ns pulsed laser is swashed by being assigned to after fiber optic splitter 1-2 among N root optical fiber in every optical fiber
The mean power of light is about hundreds of milliwatts, then passes through its latter linked fiber amplifier 1-3 respectively.In fiber amplifier 1-3
In, the ps pulsed laser and ns pulsed laser of hundreds of milliwatts is semiconductor pumped sharp with second first by the second fibre pump signal bundling device 4-2
The pump light that radiant 4-1 is sent enters the second Double Cladding Ytterbium Doped Fiber 4-3 together, and pump light is absorbed, in simple optical fiber
The mean power of ps pulsed laser and ns pulsed laser is amplified to about 100 watts, finally by entering second level light after the 3rd fibre optic isolater 4-4
Fine bundling device 1-5.First order optical-fiber bundling device 1-4 is by the sharp combiner in fiber amplifier 1-3 part output optical fibre to one
In root optical fiber, mean power now can reach several hectowatts.Second level optical-fiber bundling device 1-5 is by first order optical-fiber bundling device 1-4
All output optical fibres in hectowatt grade swash combiner into an optical fiber, mean power now can reach several kilowatts.Most
Ps pulsed laser and ns pulsed laser in whole second level optical-fiber bundling device 1-5 output optical fibres will be exported by laser export head 1-6, be achieved in
The space output of several kilowatts of mean powers.
When nanosecond pulse seed laser light source 1-1 uses the butterfly semiconductor laser 3 of current-regulation type, pulse current
Driver 3-1 control fiber coupling butterfly semiconductor laser 3-2 output ps pulsed laser and ns pulsed lasers, by passing through output optical fibre 3-3
Into the second fibre optic isolater 3-4.Second fibre optic isolater 3-4 can prevent that returning to light damage fiber coupling butterfly semiconductor swashs
Light device 3-2.The ps pulsed laser and ns pulsed laser of second fibre optic isolater 3-4 outputs is worked as by being assigned to N roots optical fiber after fiber optic splitter 1-2
In, the mean power of laser is about hundreds of milliwatts in every optical fiber, then passes through its latter linked fiber amplifier 1-3 respectively.
In fiber amplifier 1-3, the ps pulsed laser and ns pulsed laser of hundreds of milliwatts is by the second fibre pump signal bundling device 4-2, and with
The pump light that two semiconductor pumped LASER Light Source 4-1 are sent enters in the second Double Cladding Ytterbium Doped Fiber 4-3 together, and pump light is inhaled
Receive, the mean power of the ps pulsed laser and ns pulsed laser in simple optical fiber is amplified to about 100 watts.First order optical-fiber bundling device 1-4 is by light
For sharp combiner in fiber amplifier 1-3 part output optical fibre into an optical fiber, mean power now can reach several hectowatts.
Hectowatt grade in first order optical-fiber bundling device 1-4 all output optical fibres is swashed combiner to one by second level optical-fiber bundling device 1-5
In root optical fiber, mean power now can reach several kilowatts.Nanosecond in the optical-fiber bundling device 1-5 output optical fibres of the final second level
Pulse laser will be exported by laser export head 1-6, be achieved in the space output of several kilowatts of mean powers.
Claims (10)
- It is 1. a kind of based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is characterised in that：Described swashs Light device includes nanosecond pulse seed laser light source (1-1), fiber optic splitter (1-2), at least fiber amplifier (1-3), two-stage light Fine bundling device (1-4,1-5) and laser export head (1-6)；The wherein output end and light of nanosecond pulse seed laser light source (1-1) The input connection of fine beam splitter (1-2)；The output end of fiber optic splitter (1-2) simultaneously with multiple fiber amplifiers (1-3) Input connects；Multiple fiber amplifiers (1-3) are divided into the output end of all fiber amplifiers (1-3) in some groups, every group It is connected simultaneously with the input of a first order optical-fiber bundling device (1-4)；The output end of some first order fiber optic splitters (1-4) It is connected simultaneously with the input of a second level optical-fiber bundling device (1-5), the output end of some second level optical-fiber bundling devices (1-5) The input with a next stage optical-fiber bundling device is connected again, and the output end and laser of afterbody optical-fiber bundling device (1-i) are defeated Lift one's head (1-6) connection.
- 2. according to claim 1 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：Described nanosecond pulse seed laser light source (1-1) is using actively Q-switched optical fiber laser (2) and current-regulation type One kind in butterfly semiconductor laser (3).
- 3. according to claim 2 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：Described actively Q-switched optical fiber laser (2) includes the first semiconductor pumped LASER Light Source (2-1), the first pumped fiber Signal bundling device (2-2), high anti-fiber grating (2-3), the first Double Cladding Ytterbium Doped Fiber (2-4), fiber coupling acousto-optic modulator (2-5), low anti-fiber grating (2-6) and the first fibre optic isolater (2-7)；Wherein first semiconductor pumped LASER Light Source (2-1) Output end be connected with the pumping end of the first fibre pump signal bundling device (2-2)；First fibre pump signal bundling device (2-2) Input optical fibre end face chamfer, output optical fibre is connected with high anti-fiber grating (2-3) one end, high anti-fiber grating (2- 3) other end is connected with the first Double Cladding Ytterbium Doped Fiber (2-4) one end, the first Double Cladding Ytterbium Doped Fiber (2-4) other end and optical fiber Couple the input connection of acousto-optic modulator (2-5), the output optical fibre of fiber coupling acousto-optic modulator (2-5) and low reflective fibre Grating (2-6) one end connects, the input optical fibre welding of low anti-fiber grating (2-6) other end and the first fibre optic isolater (2-7).
- 4. according to claim 2 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：The butterfly semiconductor laser (3) of described current-regulation type includes pulse current driver (3-1), fiber coupling Butterfly semiconductor laser (3-2), output optical fibre (3-3) and the second fibre optic isolater (3-4)；Wherein pulse current driver The input of the output optical fibre connection fiber coupling butterfly semiconductor laser (3-2) of (3-1)；Fiber coupling butterfly semiconductor swashs The output end of light device (3-2) is connected by output optical fibre (3-3) with the input of the second fibre optic isolater (3-4).
- 5. according to claim 1 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：The fiber amplifier level that described fiber amplifier (1-3) is sequentially connected by least two-stage forms；Every grade of fiber amplifier level Ytterbium light is mixed including the second semiconductor pumped LASER Light Source (4-1), the second fibre pump signal bundling device (4-2), the second double clad Fine (4-3) and the 3rd fibre optic isolater (4-4)；The pumping end connection second of wherein the second fibre pump signal bundling device (4-2) Semiconductor pumped LASER Light Source (4-1), output end are connected with the one end of the second Double Cladding Ytterbium Doped Fiber (4-3), the second double clad The other end of Yb dosed optical fiber (4-3) is connected with the 3rd fibre optic isolater (4-4)；3rd Fiber isolation of previous stage fiber amplifier level The output end of device (4-4) is connected with the input of the second fibre pump signal bundling device (4-2) of rear stage fiber amplifier level；The The input of second fibre pump signal bundling device (4-2) of one-level fiber amplifier level and the output end of fiber optic splitter (1-2) It is connected, output end and first order optical-fiber bundling device (1-4) phase of the 3rd fibre optic isolater (4-4) of afterbody fiber amplifier level Even.
- 6. according to claim 5 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：The second semiconductor pumped LASER Light Source (4-1) in described first order fiber amplifier level uses fiber coupling multimode Semiconductor laser, operation wavelength are located at 915nm, and output optical fibre is 105 μm/125 μm optical fiber, and fibre core NA is 0.22, output work Rate is 20W；Second fibre pump signal bundling device (4-2) uses the fibre pump signal bundling device of (2+1) × 1；Second double clad Core diameter/inner cladding of Yb dosed optical fiber (4-3) is 20 μm/130 μm, and fibre core NA is 0.08, and the absorption coefficient to laser at 915nm is 3dB/m。
- 7. according to claim 5 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：The second semiconductor pumped LASER Light Source (4-1) in described second level fiber amplifier uses fiber coupling multimode Semiconductor laser, operation wavelength are located at 915nm, and output optical fibre is 105 μm/125 μm optical fiber, and fibre core NA is 0.22, output work Rate is 30W；Second fibre pump signal bundling device (4-2) uses the fibre pump signal bundling device of (18+1) × 1；Second double clad Core diameter/inner cladding of Yb dosed optical fiber (4-3) is 50 μm/400 μm, and fibre core NA is 0.08, and the absorption coefficient to laser at 915nm is 2dB/m。
- 8. according to claim 1 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：Described fiber optic splitter (1-2) is 1*N fiber optic splitters, N >=2；First order optical-fiber bundling device (1-4) is M*1 light Fine bundling device, M >=2, and M are N aliquot.
- 9. according to claim 1 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：The input optical fibre quantity of described second level optical-fiber bundling device (1-5) and the quantity of first order optical-fiber bundling device (1-4) It is equal.
- 10. according to claim 1 based on the repeatedly incoherent high-energy nanosecond pulse full-optical-fiber laser for closing beam, it is special Sign is：Described laser export head (1-6) is quartz glass end cap, and suppression is coated with 8 degree with tilt angle, and on end face Self-oscillatory flashlight antireflection film.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181160A (en) * | 2017-07-03 | 2017-09-19 | 山东海富光子科技股份有限公司 | A kind of high-energy nanosecond pulse full-optical-fiber laser based on repeatedly incoherent conjunction beam |
| CN109038199A (en) * | 2018-10-19 | 2018-12-18 | 安徽华生机电设备有限公司 | A kind of pulsed laser and its pulse power control application method |
| CN111541487A (en) * | 2020-04-22 | 2020-08-14 | 四川思创优光科技有限公司 | Networking method of multimode fiber laser and multimode fiber laser |
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2017
- 2017-07-03 CN CN201720793605.XU patent/CN207052929U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181160A (en) * | 2017-07-03 | 2017-09-19 | 山东海富光子科技股份有限公司 | A kind of high-energy nanosecond pulse full-optical-fiber laser based on repeatedly incoherent conjunction beam |
| CN109038199A (en) * | 2018-10-19 | 2018-12-18 | 安徽华生机电设备有限公司 | A kind of pulsed laser and its pulse power control application method |
| CN109038199B (en) * | 2018-10-19 | 2024-01-12 | 安徽华生机电集团有限公司 | Pulse laser and pulse power control using method thereof |
| CN111541487A (en) * | 2020-04-22 | 2020-08-14 | 四川思创优光科技有限公司 | Networking method of multimode fiber laser and multimode fiber laser |
| CN111541487B (en) * | 2020-04-22 | 2021-12-24 | 四川思创优光科技有限公司 | Networking method of multimode fiber laser and multimode fiber laser |
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Denomination of utility model: A high energy nanosecond pulse all fiber laser based on multiple incoherent combining Effective date of registration: 20210517 Granted publication date: 20180227 Pledgee: Weihai City Commercial Bank Limited by Share Ltd. high tech branch Pledgor: HFB Photonics Co.,Ltd. Registration number: Y2021980003674 |