CN101615761B - Coherent beam combination all-fiber laser - Google Patents
Coherent beam combination all-fiber laser Download PDFInfo
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- CN101615761B CN101615761B CN2008101501191A CN200810150119A CN101615761B CN 101615761 B CN101615761 B CN 101615761B CN 2008101501191 A CN2008101501191 A CN 2008101501191A CN 200810150119 A CN200810150119 A CN 200810150119A CN 101615761 B CN101615761 B CN 101615761B
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Abstract
The invention relates to a coherent beam combination all-fiber laser which comprises fiber lasers and a collimated output system, wherein the combination of the fiber lasers comprises a high-reflecting fiber grating for highly reflecting lasers, tail fiber output semiconductor pumping sources, fiber pumping beam combiners, gain fibers and low-reflecting fiber gratings for lowly reflecting lasers; the tail fiber output semiconductor pumping sources are connected with the fiber pumping beam combiners; the high-reflecting fiber grating is respectively connected with the fiber pumping beam combiners; one end of each the low-reflecting fiber grating is connected with the fiber pumping beam combiners through the gain fibers; and the other end of each low-reflecting fiber grating is connected with the collimated output system for realizing collimated output. The invention provides the coherent beam combination all-fiber laser which can improve the injection coupling effect between the lasers, improve the heat-light injury resistance of the system and realize high-power output.
Description
Technical field
The present invention relates to a kind of fiber laser, relate in particular to a kind of coherent beam combination all-fiber laser.
Background technology
That fiber laser has is simple in structure, thermal diffusivity good, conversion efficiency is high, stable performance, beam quality advantages of higher, and high-capacity optical fiber laser can be widely used in fields such as industrial processes, modern national defense, medical engineering.Though the power output of simple optical fiber laser has now realized the level of multikilowatt, but the development of fiber laser can't be satisfied the application demand in some field at present, except being not enough to of power aspect, its main cause is because many existing high-capacity optical fiber lasers are to use the pumping coupling technique of block optical element, its stability, environmental suitability are poor, can not give full play to many advantages of fiber laser.Therefore, development high power full optical fiber laser technology has been subjected to people's great attention.At present, industry, medical treatment and military high-capacity optical fiber laser all are full-optical-fiber lasers.
On the other hand, because the hot light injury problem of optical fiber and optical fibre device, single full-optical-fiber laser can not be realized too high power output, for realizing higher-wattage output and obtain good beam quality that the coherent beam combination technology that develops full optical fiber is comparatively desirable technological approaches.Formerly all-fiber coherent beam combination technology [as referring to Opt.Lett.24 (24), 1814-1816 (2005); Opt.Lett.30 (11), 1339-1341 (2005); Opt.Expr.15 (25), 17114-17119 etc.] utilize 2 * 2 fiber couplers to realize the coherent beam combination of multi-channel optical fibre laser more.There is obvious defects in this class prior art: employed fiber coupler is wanted the energy of load 2 road simultaneously or multi-channel optical fibre laser, because the restriction of the intrinsic damage threshold of fiber coupler, formerly technology is realizing that the high power output facet has very big difficulty.
Summary of the invention
The above-mentioned technical problem of the present invention for existing in the solution background technology, and a kind of injection coupling efficiency that improves between laser is provided, can improve the heat resistanceheat resistant-light injury ability of system simultaneously, can realize the coherent beam combination all-fiber laser of high power output.
Technical solution of the present invention is: the present invention is a kind of coherent beam combination all-fiber laser, its special character is: described coherent beam combination all-fiber laser comprises fiber laser and collimation output system, described fiber laser comprises to the high anti-high reflective fine grating of laser, tail optical fiber output semiconductor pumping source, pumped fiber bundling device, gain fibre with to laser and hangs down anti-low reflective fine grating, tail optical fiber output semiconductor pumping source is connected with the pumping optical fiber of pumped fiber bundling device, and high reflective fine grating is connected with signal optical fibre one end of pumped fiber bundling device; One end of low reflective fine grating is connected by the signal optical fibre of gain fibre with the pumped fiber bundling device, and the other end is connected with the collimation output system realizes collimation output.
Above-mentioned fiber laser is two groups or more.
The shared high reflective fine grating of two adjacent groups fiber laser.
In the time of more than above-mentioned fiber laser is two groups, adjacent fiber laser connects by fiber coupler.
Above-mentioned fiber coupler is 1 * 2 fiber coupler or multi-channel optical fibre coupler.
The present invention has the following advantages:
1, can improve injection coupling efficiency between laser.The present invention utilizes chamber mould leakage technology (by shared chamber mirror) to realize the injection locking of multi-channel optical fibre laser, and this technology can effectively improve the injection coupling efficiency between laser.
2, realize high power output.The coherent beam combination system that the present invention adopts has fine autgmentability, since each fiber coupler in fact a load energy of one road optical-fiber laser, the beam combination system possesses the ability of heat resistanceheat resistant light injury preferably, so the technology of the present invention can be used for developing powerful full-optical-fiber laser.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the structural representation of the embodiment of the invention two;
Fig. 3 is the structural representation of the embodiment of the invention three.
Embodiment
Referring to Fig. 1, the structure of the embodiment of the invention one is the coherent beam combination all-fiber laser that constitutes with two-way fiber laser 5, it comprises: (as reflectivity is 50% to the high anti-fiber grating H-FBG1 of laser, 70% etc.), two tail optical fiber output semiconductor pumping source LD2, two pumped fiber bundling device PC3, gain fibre 4, two to the low anti-fiber grating L-FBG6 of laser (as reflectivity is 5%, 10% etc.) and collimation output system OC7, high reflective fine grating H-FBG1 and pumped fiber bundling device PC3 and gain fibre 4, the low anti-fiber grating L-FBG6 of laser is constituted jointly the resonant cavity of fiber laser 5.
The tail optical fiber of tail optical fiber output semiconductor pumping source LD2 is connected in the pumping optical fiber 10 of pumped fiber bundling device PC3.The two ends of the anti-fiber grating H-FBG1 of laser height are connected to the signal optical fibre of two pumped fiber bundling device PC3, another signal optical fibre end of two pumped fiber bundling device PC3 is connected to two gain fibres 4, the other end of gain fibre 4 is connected to two ends to the low anti-fiber grating L-FBG6 of laser, and two other ends to the low anti-fiber grating L-FBG6 of laser are realized collimation output by collimation output system OC7.Because the shared chamber mirror of two fiber lasers of above structure (high reflective fine grating H-FBG1), two fiber lasers leak the mutual injection locking that realizes two-laser by the chamber mould, realize isotype homophase output at laser output.Output beam forms the transmission light field that primary maximum is positioned at the central transmission axle by collimation output system OC7 in the far field.
Referring to Fig. 2, the structure of the embodiment of the invention two is the coherent beam combination all-fiber lasers that constitute with three road fiber lasers, wherein FC8 is one 1 * 2 a fiber coupler, and FA9 is three arrays that low reflective fine grating L-FBG6 forms, and other element meanings are identical with embodiment one.Fiber laser F1 and F2 realize injection locking by chamber mould leakage way, and same fiber laser F2 and F3 also leak by the chamber mould and realize injection locking, therefore, can realize the coherent beam combination of three road fiber lasers by the structure of embodiment two.
Referring to Fig. 3, the structure of the embodiment of the invention three is the coherent beam combination all-fiber lasers that constitute with N road fiber laser.FA10 is N the array that low reflective fine grating L-FBG6 constitutes, and other element meanings are identical with embodiment two.N road fiber laser interconnects by the fiber coupler FC8 of N-2 individual 1 * 2, faces the two-way fiber laser mutually and realizes injection locking by chamber mould leakage way, and last N road fiber laser is realized isotype homophase output.Collimation output system OC6 forms the transmission light field that primary maximum is positioned at the central transmission axle with the beam combination light field in the far field.
Claims (1)
1. coherent beam combination all-fiber laser, it is characterized in that: described coherent beam combination all-fiber laser comprises fiber laser and collimation output system, described fiber laser comprises to the high anti-high reflective fine grating of laser, tail optical fiber output semiconductor pumping source, pumped fiber bundling device, gain fibre with to laser and hangs down anti-low reflective fine grating that described tail optical fiber output semiconductor pumping source is connected with the pumped fiber bundling device; One end of described low reflective fine grating is connected with the pumped fiber bundling device by gain fibre, and the other end is connected with the collimation output system realizes collimation output; The shared high reflective fine grating of two adjacent groups fiber laser; The reflective fine light of this height is deleted respectively with pumped fiber bundling device in this two adjacent groups fiber laser and is connected, thereby reveals the mutual injection locking that realizes this two adjacent groups fiber laser by the chamber mould.
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| CN2008101501191A CN101615761B (en) | 2008-06-24 | 2008-06-24 | Coherent beam combination all-fiber laser |
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| CN2008101501191A CN101615761B (en) | 2008-06-24 | 2008-06-24 | Coherent beam combination all-fiber laser |
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| CN101615761A CN101615761A (en) | 2009-12-30 |
| CN101615761B true CN101615761B (en) | 2011-02-16 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101847818B (en) * | 2010-04-02 | 2012-07-18 | 深圳朗光科技有限公司 | Cascading type fiber laser |
| CN103155308B (en) * | 2010-10-18 | 2016-06-01 | 新日铁住金株式会社 | Laser aid and possess the laser processing device of this laser aid |
| CN113054525B (en) * | 2021-03-15 | 2022-04-01 | 中国工程物理研究院流体物理研究所 | Infrared laser coherent synthesis device and synthesis method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188342A (en) * | 2007-11-08 | 2008-05-28 | 北京交通大学 | Transmission device generating micro-wave and mm wave by using linear cavity dual-wave optical fiber laser |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188342A (en) * | 2007-11-08 | 2008-05-28 | 北京交通大学 | Transmission device generating micro-wave and mm wave by using linear cavity dual-wave optical fiber laser |
Non-Patent Citations (2)
| Title |
|---|
| Bing Lei et al.Phase locking of an array of three fiber lasers by an all-fiber coupling loop.《OPTICS EXPRESS》.2007,第15卷(第25期),17116. |
| Bing Lei et al.Phase locking of an array of three fiber lasers by an all-fiber coupling loop.《OPTICS EXPRESS》.2007,第15卷(第25期),17116. * |
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Owner name: XI AN SINO-MEIMAN LASER TECH. CO., LTD. Free format text: FORMER OWNER: XI-AN INST. OF OPTICS AND FINE MECHANICS, CHINESE ACADEMY OF SCIENCES Effective date: 20120615 |
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Effective date of registration: 20120615 Address after: 710119 Xi'an high tech Zone, Shaanxi, No. 17 information Avenue Patentee after: Xi'an Sino-Meiman Laser Tech. Co., Ltd. Address before: 710119 Xi'an province high tech Zone New Industrial Park Information Avenue, No. 17 Patentee before: Xi-an Inst. of Optics and Fine Mechanics, Chinese Academy of Sciences |
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Application publication date: 20091230 Assignee: Huanggang man laser Co., Ltd. Assignor: Xi'an Sino-Meiman Laser Tech. Co., Ltd. Contract record no.: 2013420000014 Denomination of invention: Coherent beam combination all-fiber laser Granted publication date: 20110216 License type: Exclusive License Record date: 20130318 |
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