CN114883898A - Array distributed high-power all-fiber laser amplifier - Google Patents
Array distributed high-power all-fiber laser amplifier Download PDFInfo
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- CN114883898A CN114883898A CN202210568821.XA CN202210568821A CN114883898A CN 114883898 A CN114883898 A CN 114883898A CN 202210568821 A CN202210568821 A CN 202210568821A CN 114883898 A CN114883898 A CN 114883898A
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- 239000000835 fiber Substances 0.000 title claims abstract description 141
- 239000013307 optical fiber Substances 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 101100221226 Zea mays COAC2 gene Proteins 0.000 description 5
- 101000615238 Homo sapiens Proto-oncogene DBL Proteins 0.000 description 4
- 102100021384 Proto-oncogene DBL Human genes 0.000 description 4
- 230000001427 coherent effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012994 industrial processing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06745—Tapering of the fibre, core or active region
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- 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
Abstract
The invention relates to the technical field of laser, in particular to an array distributed high-power all-fiber laser amplifier, which aims to solve the problems of concentrated high-power pumping, gain and heat during the working of the conventional high-power fiber laser amplifier. The invention comprises a multi-core fiber beam splitter P1, a high-power all-fiber laser amplifier array HPFA1-N and a multi-core fiber beam combiner P2 which are connected in sequence; the output end of the multi-core fiber beam splitter P1 is separated into a plurality of output tail fibers, and the output tail fibers have the same mode field parameters as the input fibers of the high-power all-fiber laser amplifier array HPFA 1-N; the input end of the multi-core optical fiber beam combiner P2 is separated into a plurality of input tail fibers, and the input tail fibers have the same mode field parameters as the output optical fibers of the high-power all-fiber laser amplifier array HPFA 1-N. The invention can make the high-power all-fiber laser amplifier bear pump light with higher power; the difficulty of heat management is reduced; higher fiber laser power can be achieved.
Description
The technical field is as follows:
the invention relates to the technical field of laser, in particular to an array distributed high-power all-fiber laser amplifier.
Background
The high-power all-fiber laser at home and abroad adopts a Main Oscillation Power Amplification (MOPA) technology, so that the high-power all-fiber laser amplifier obtains higher-power fiber laser output. This technology has evolved over decades, resulting in a stable system of industrial application and a mature commercial scale. However, in recent years, the output power level of high power all-fiber lasers has been significantly slowed down because: the gain performance of the high-power all-fiber laser amplifier is improved depending on the performance of core devices, namely a high-power fiber pump coupler and a large-mode-field gain fiber. Firstly, the pump coupler of the high-power all-fiber laser amplifier must have extremely low insertion loss so as to intensively couple the high-power pump light and the seed laser from the previous stage into the gain fiber without being damaged. Secondly, with the increase of laser power, the large mode field gain fiber of the high-power all-fiber laser amplifier increases the risk of photo-thermal damage due to the phenomena of nonlinearity, unstable transverse field mode, and the like. Therefore, the improvement of the power level of the high-power all-fiber laser puts higher requirements on the performance of the core device of the high-power all-fiber laser amplifier, which exceeds the design and development process level of the existing high-power fiber pump coupler and large mode field gain fiber.
One type of prior patent adopts multi-core optical fibers with larger fiber core spacing for coherent beam combination, and is applied to the fields of laser amplification or communication and the like. The multicore fiber has a large core pitch, almost no coupling, and mode fields in the cores are independently transmitted. The coherent beam combination technology applied to laser amplification outputs mode fields in a plurality of fiber cores from a multi-core optical fiber, and then uses an optical system to make the mode fields coherently superposed. The coherent beam combination system has a complex structure, and the problem of participating in beam phase control of the beam combination causes poor beam quality of the coherent beam combination, and is difficult to popularize practically.
In another prior art, a plurality of optical fibers are bundled and fused with a large mode field optical fiber or multimode optical fiber with a thick fiber core to form a laser beam combiner, and a plurality of paths of high-power all-fiber laser beams are coupled to form a beam of high-power optical fiber laser. The high-power fiber laser obtained by the method has poor beam quality, is only used for industrial processing at present, and cannot meet the application fields of high-precision laser processing, national defense and the like which have higher requirements on the beam quality of the high-power fiber laser beam.
Disclosure of Invention
The invention provides an array distributed high-power all-fiber laser amplifier, which aims to solve the problems of concentrated high-power pumping, gain and heat in the working process of the conventional high-power fiber laser amplifier.
In order to achieve the purpose, the invention adopts the technical scheme that: the array distributed high-power all-fiber laser amplifier is characterized by comprising a multi-core fiber beam splitter P1, a high-power all-fiber laser amplifier array HPFA1-N and a multi-core fiber beam combiner P2 which are connected in sequence; the output end of the multi-core fiber beam splitter P1 is separated into a plurality of output tail fibers corresponding to the fiber cores of the input fibers, and the output tail fibers and the input fibers of the high-power all-fiber laser amplifier array HPFA1-N have the same mode field parameters; the input end of the multi-core optical fiber combiner P2 is separated into a plurality of input tail fibers corresponding to the fiber cores of the output optical fibers, and the input tail fibers and the output optical fibers of the high-power all-fiber laser amplifier array HPFA1-N have the same mode field parameters.
The input optical fiber of the multi-core optical fiber beam splitter P1 and the output optical fiber of the multi-core optical fiber beam combiner P2 are all multi-core optical fibers without doped gain ions and have the same fiber core distribution characteristics and super mode field characteristics, and the fiber core distribution characteristics meet the condition that the fiber core space is small, so that the fiber core mode fields have strong coupling.
The all-fiber laser amplifier array unit HPFA1-N has identical fiber device parameters and integration technology processes.
Compared with the prior art, the invention has the advantages that:
1) the invention uses the multi-core fiber beam splitter to divide the seed laser into a plurality of beams, and the high-power all-fiber laser amplifier array realizes laser gain and amplification, thereby obtaining higher fiber laser amplification power.
2) The invention realizes the dispersion distribution of the high-power pump light through the high-power all-fiber laser amplifier array, so that the high-power all-fiber laser amplifier can bear the pump light with higher power.
3) When the high-power all-fiber laser works, the laser gain and the heat generated by amplification are dispersed and distributed in the high-power all-fiber laser array, so that the photo-thermal damage threshold of an optical fiber device is effectively improved, and the difficulty of thermal management is reduced.
4) By optimizing the structural parameters and processes of the multi-core fiber beam splitter and the multi-core fiber beam combiner and the integration parameters and processes of the high-power all-fiber laser array, the fiber laser close to the diffraction limit is expected to be obtained based on the method, and the laser output power is greatly improved on the basis of the conventional development process of a high-power fiber pump coupler and a large-mode-field gain fiber.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
The technical solution in the present embodiment will be clearly and completely described below with reference to the embodiments and the accompanying drawings.
Referring to fig. 1, the array-distributed high-power all-fiber laser amplifier provided by the invention comprises a multi-core fiber beam splitter P1, a high-power all-fiber laser amplifier array HPFA1-N and a multi-core fiber beam combiner P2 which are connected in sequence. The input optical fiber of the multi-core optical fiber beam splitter P1 and the output optical fiber of the multi-core optical fiber beam combiner P2 are all multi-core optical fibers without doped gain ions. The two multi-core optical fibers have the same number and arrangement of cores, the diameter of each core is more than or equal to 2 mu m and less than or equal to 30 mu m, the core interval is represented as dcore, and the gap (dcore-rcore) between the adjacent cores is less than or equal to 20 mu m. The output end of the multi-core optical fiber beam splitter P1 is separated into a plurality of output tail fibers F11-F1N corresponding to the fiber cores of the input optical fibers, and the output tail fibers F11-F1N and the laser input optical fibers Fi1-FiN of the high-power all-fiber laser amplifier array HPFA1-N have the same fiber core diameter and numerical aperture; the input end of the multi-core optical fiber combiner P2 is separated into a plurality of input tail fibers F21-F2N corresponding to the fiber cores of the output optical fibers, and the input tail fibers F21-F2N and the laser output optical fibers Fo1-FoN of the high-power all-fiber laser amplifier array HPFA1-N have the same fiber core diameter and numerical aperture. The all-fiber laser amplifier array unit HPFA1-N has identical fiber device parameters and integration technology processes.
Referring to fig. 1, the working principle of the present invention is: seed laser generated by an external fiber laser is input into a multi-core fiber MCF1, and the seed laser is separated into multiple paths of seed laser transmitted in an output tail fiber F11-N through a multi-core fiber beam splitter P1. The multi-path seed laser is input into the all-fiber laser amplifier array HPFA1-N through the input optical fiber Fi1-N for amplification, and the multi-path amplified optical fiber laser is output through the output optical fiber Fo 1-N. Finally, the multipath amplified fiber laser is coupled into the output multi-core fiber MCF2 corresponding to the input pigtail F21-N of the input multi-core fiber combiner P2, and is recombined due to strong coupling of a plurality of fiber core optical fields of the MCF2 to form a bundle of stably transmitted fiber laser.
During preparation, one end of the output optical fiber F11-N is bundled, fused, tapered and cut, and then is correspondingly welded with a plurality of fiber cores of the multi-core optical fiber MCF1 to form a multi-core optical fiber beam splitter P1; or when the multicore fiber is drawn, one end of the multicore fiber prefabricated rod is separated according to the fiber core distribution, then the optical fiber is drawn, and the multicore fiber beam splitter P1 with one end separated by tail fiber is directly and integrally drawn. The two methods can be used for developing the multi-core optical fiber combiner P2.
The all-fiber laser amplifier array unit HPFA1-N has completely the same devices, integration technical parameters and processes, and the output power of the array unit HPFA1-N can be independently adjusted by adjusting the power of pump light.
In the embodiment, the all-fiber laser amplifier array HPFA1-N has better coherence; the multi-core fibers MCF1 and MCF2 have in-phase supermodes close to diffraction limit. Therefore, the seed laser input into the multi-core fiber MCF1 can be distributed and amplified in an array manner, and a high-power and high-beam-quality all-fiber laser beam can be obtained by outputting the MCF 2. For example, the multicore fibers MCF1 and MCF2 have 37 cores. The multi-core fiber beam splitter P1 splits the seed laser into multiple seed lasers with single path close to 50W, the power of the single path laser amplified by the all-fiber laser amplifier array unit HPFA1-N is 1000W, and the multi-core fiber beam splitter P2 can obtain high beam quality fiber laser with about 3.7 ten thousand W.
Claims (3)
1. The array-distributed high-power all-fiber laser amplifier is characterized by comprising a multi-core fiber beam splitter P1, a high-power all-fiber laser amplifier array HPFA1-N and a multi-core fiber beam combiner P2 which are sequentially connected; the output end of the multi-core fiber beam splitter P1 is separated into a plurality of output tail fibers corresponding to the fiber cores of the input fibers, and the output tail fibers and the input fibers of the high-power all-fiber laser amplifier array HPFA1-N have the same mode field parameters; the input end of the multi-core optical fiber combiner P2 is separated into a plurality of input tail fibers corresponding to the fiber cores of the output optical fibers, and the input tail fibers and the output optical fibers of the high-power all-fiber laser amplifier array HPFA1-N have the same mode field parameters.
2. The array distributed high-power all-fiber laser amplifier of claim 1, wherein: the input optical fiber of the multi-core optical fiber beam splitter P1 and the output optical fiber of the multi-core optical fiber beam combiner P2 are all multi-core optical fibers without doped gain ions and have the same fiber core distribution characteristics and super mode field characteristics, and the fiber core distribution characteristics meet the condition that the fiber core space is small, so that the fiber core mode fields have strong coupling.
3. An array distributed high power all-fiber laser amplifier according to claim 1 or 2, wherein: the all-fiber laser amplifier array unit HPFA1-N has identical fiber device parameters and integration technology processes.
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| CN202210568821.XA CN114883898A (en) | 2022-05-24 | 2022-05-24 | Array distributed high-power all-fiber laser amplifier |
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| CN202210568821.XA CN114883898A (en) | 2022-05-24 | 2022-05-24 | Array distributed high-power all-fiber laser amplifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425507A (en) * | 2022-09-30 | 2022-12-02 | 西安工业大学 | Distributed gain high-power all-fiber laser resonant cavity |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2359884A1 (en) * | 2000-10-26 | 2002-04-26 | Jds Uniphase Corporation | Coherent multi-wavelength light source for raman amplification |
| US20030152116A1 (en) * | 2002-02-12 | 2003-08-14 | Hsien-Kuei Liao | Power-equalizing multi-channel fiber laser array |
| US20050157760A1 (en) * | 2004-01-20 | 2005-07-21 | Rice Robert R. | Scalable wavelength shifted laser source and method |
| US20100195195A1 (en) * | 2009-02-02 | 2010-08-05 | Nelson Burke E | System and method for combining multiple fiber amplifiers or multiple fiber lasers |
| US20100329288A1 (en) * | 2008-02-19 | 2010-12-30 | Fujikura Ltd. | Optical fiber laser |
| CN103050873A (en) * | 2012-12-29 | 2013-04-17 | 山东海富光子科技股份有限公司 | High-power pulse type ytterbium-doped all-fiber laser system |
| CN203983726U (en) * | 2014-08-12 | 2014-12-03 | 福州高意通讯有限公司 | A kind of high power pulse optical fiber laser |
| US20150043597A1 (en) * | 2012-08-07 | 2015-02-12 | Ipg Photonics Corporation | High Power Ultra-Compact, Lightweight Multi-Kilowatt Fiber Laser System Based on Coherent & Spectral Beam Combining |
| CN106207726A (en) * | 2016-10-08 | 2016-12-07 | 山东海富光子科技股份有限公司 | A kind of based on the incoherent high-energy nanosecond pulse full-optical-fiber laser closing bundle |
| CN112290362A (en) * | 2020-10-30 | 2021-01-29 | 山东海富光子科技股份有限公司 | High-power high-energy pulse all-fiber laser for laser cleaning |
| CN112652940A (en) * | 2019-10-12 | 2021-04-13 | 北京热刺激光技术有限责任公司 | Multi-path output laser |
| CN112821178A (en) * | 2021-01-06 | 2021-05-18 | 中国电子科技集团公司第三十八研究所 | Multi-beam pulse fiber laser |
| CN113437627A (en) * | 2021-06-07 | 2021-09-24 | 中国科学院上海光学精密机械研究所 | Tunable multi-wavelength multiplexing spectrum modulation and separation system for high-power optical fiber laser amplification |
| CN113809623A (en) * | 2021-09-15 | 2021-12-17 | 山东海富光子科技股份有限公司 | Continuous pulse composite mode high-power all-fiber laser system |
| CN115425507A (en) * | 2022-09-30 | 2022-12-02 | 西安工业大学 | Distributed gain high-power all-fiber laser resonant cavity |
-
2022
- 2022-05-24 CN CN202210568821.XA patent/CN114883898A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2359884A1 (en) * | 2000-10-26 | 2002-04-26 | Jds Uniphase Corporation | Coherent multi-wavelength light source for raman amplification |
| US20030152116A1 (en) * | 2002-02-12 | 2003-08-14 | Hsien-Kuei Liao | Power-equalizing multi-channel fiber laser array |
| US20050157760A1 (en) * | 2004-01-20 | 2005-07-21 | Rice Robert R. | Scalable wavelength shifted laser source and method |
| US20100329288A1 (en) * | 2008-02-19 | 2010-12-30 | Fujikura Ltd. | Optical fiber laser |
| US20100195195A1 (en) * | 2009-02-02 | 2010-08-05 | Nelson Burke E | System and method for combining multiple fiber amplifiers or multiple fiber lasers |
| US20150043597A1 (en) * | 2012-08-07 | 2015-02-12 | Ipg Photonics Corporation | High Power Ultra-Compact, Lightweight Multi-Kilowatt Fiber Laser System Based on Coherent & Spectral Beam Combining |
| CN103050873A (en) * | 2012-12-29 | 2013-04-17 | 山东海富光子科技股份有限公司 | High-power pulse type ytterbium-doped all-fiber laser system |
| CN203983726U (en) * | 2014-08-12 | 2014-12-03 | 福州高意通讯有限公司 | A kind of high power pulse optical fiber laser |
| CN106207726A (en) * | 2016-10-08 | 2016-12-07 | 山东海富光子科技股份有限公司 | A kind of based on the incoherent high-energy nanosecond pulse full-optical-fiber laser closing bundle |
| CN112652940A (en) * | 2019-10-12 | 2021-04-13 | 北京热刺激光技术有限责任公司 | Multi-path output laser |
| CN112290362A (en) * | 2020-10-30 | 2021-01-29 | 山东海富光子科技股份有限公司 | High-power high-energy pulse all-fiber laser for laser cleaning |
| CN112821178A (en) * | 2021-01-06 | 2021-05-18 | 中国电子科技集团公司第三十八研究所 | Multi-beam pulse fiber laser |
| CN113437627A (en) * | 2021-06-07 | 2021-09-24 | 中国科学院上海光学精密机械研究所 | Tunable multi-wavelength multiplexing spectrum modulation and separation system for high-power optical fiber laser amplification |
| CN113809623A (en) * | 2021-09-15 | 2021-12-17 | 山东海富光子科技股份有限公司 | Continuous pulse composite mode high-power all-fiber laser system |
| CN115425507A (en) * | 2022-09-30 | 2022-12-02 | 西安工业大学 | Distributed gain high-power all-fiber laser resonant cavity |
Non-Patent Citations (1)
| Title |
|---|
| 郭颖;: "多芯光纤相干组束研究进展", 科技信息, no. 16, 5 June 2013 (2013-06-05) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425507A (en) * | 2022-09-30 | 2022-12-02 | 西安工业大学 | Distributed gain high-power all-fiber laser resonant cavity |
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