CN208738604U - A kind of fiber reel device of linear polarization optical-fiber laser output that realizing single mode single-frequency - Google Patents
A kind of fiber reel device of linear polarization optical-fiber laser output that realizing single mode single-frequency Download PDFInfo
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- CN208738604U CN208738604U CN201821210017.XU CN201821210017U CN208738604U CN 208738604 U CN208738604 U CN 208738604U CN 201821210017 U CN201821210017 U CN 201821210017U CN 208738604 U CN208738604 U CN 208738604U
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Abstract
The utility model provides a kind of fiber reel device of linear polarization optical-fiber laser output for realizing single mode single-frequency, it is by a fiber reel with multiple semi arch elbow structures, sapphire euphotic cover plate and the humorous metal spring pressing of pressure adjustable are constituted, optical fiber panel surface be carved with certain length for placing the arcuate furrow of certain cladding diameter optical fiber.Other all high-order modes other than basic mode can all be carried out filtering out for lossy by the selection for carrying out mode to the optical fiber being coiled in arcuate furrow by the circular arc curve of multiple and different bending radius, obtain pure single-mode laser output.The fiber reel device cost of manufacture is cheap, and principle is simple, and multi-parameter is adjustable, it can be achieved that single mode single frequency fiber laser more than multikilowatt exports.
Description
Technical field
The present invention relates to technical field of optical fiber and laser technology field, in particular to high-power single mode fiber laser and put
Big device.
Background technique
High-capacity optical fiber laser beam quality, volume, weight, efficiency, in terms of all have clear superiority, it is existing
Be widely used to optical-fibre communications, laser space telecommunication, industrial shipbuilding, automobile manufacture, laser cutting, metal welding,
Civilian industries and the military fields such as military and national defense safety, biologic medical, large foundation construction, are referred to as " third generation laser
Device ".Especially in field of laser processing, is more and more paid attention to and studied.Laser processing and automation complete set technology quilt
Before " long-term science and technology development planning outline (2006-2020) in country " is classified as following eight given priority to for 15 years in China
Along one of technology.National Development and Reform Committee, the Department of Science and Technology, Department of Commerce and State Intellectual Property Office's joint publication " should currently first develop
Hi-tech industrialization major fields guide " laser processing technology and equipment are also classified as to 21 elder generations that should currently first develop
System makes one of hi-tech industrialization major fields, specifically includes: " laser precision machining technology and equipment ", " laser cutting skill
Art and equipment ", " laser welding technology and equipment ".And high-capacity optical fiber laser has gradually replaced traditional carbon dioxide to swash
Light device and solid state laser become the most crucial component of laser process equipment.Optical fiber laser can be widely applied to metal and add
The cutting and welding in work field, (such as aerospace, high-speed rail, shipbuilding, automobile element part etc.), it is with its superior light beam
High reflection or high conduction coefficient material can be processed, it can be achieved that remote under long-focus, it can be achieved that fine structure and high speed processing in quality
Cheng Jiagong cuts field in metal plate at present, and optical-fiber laser cutting equipment has gradually replaced traditional metal plate cutting equipment and punching
The machining equipments such as bed.The first big laser process equipment quotient big nation, China laser also prepares investment more than 30 in declaration in 2015
Hundred million cut welding system for high power semiconductor device, special optical fiber and optical fiber laser Industrialization Projects and high power laser light
And robot automation equips Industrialization Projects.In high-capacity optical fiber laser system more than multikilowatt, optical fiber laser
There is 5,000,000,000 dollars of market potential, and will gradually replace CO2 laser, especially in metal cutting field, optical fiber laser
CO2 laser will be replaced comprehensively between 3~5 years.
Since First kilowatt optical fiber laser is since Southampton, Britain laboratory is born, single-core fiber swashs over 10 years
The output power of light device constantly rises, and the peak power output of present single single mode fiber laser alreadys exceed 10KW, by
IPG company keeps.SPI company, Britain, the NLIGHT company in the U.S. and the ROFIN company of Germany also have respective kilowatt respectively
The fibre laser product of the single single mode of grade.Although the high-capacity optical fiber laser starting in China is a little later, develop also rapidly.
Currently, the sharp section in Wuhan, Shandong sea Fu Guangzi and the prosperous release multikilowatt of all having the ability of Shenzhen wound, light velocity mass M2< 1.3, list
Root single mode fiber laser complete machine.Industrial optical fiber laser field more than multikilowatt, current market or main
It is dominated by the IPG Photonics company in the U.S., the especially above single mode fiber laser of multikilowatt is serial (M2 < 1.2), several
Company is essentially all to be no more than 1500W in the same horizontal magnitude.The power of high power single mode fiber laser without
For the major reason that method continues to lift up exactly when output power is further promoted, used biography can be with the fibre of gain fibre
Core diameter can increase with it (because heat dissipation problem when high power operation), and the increase of fibre core diameter can improve optical fiber
Normalized frequency V, and then increase mode quantity existing for institute's energy, the i.e. increase of core diameter in large mode field diameter optical fiber fibre core
It will lead to and generate more higher order modes, be unable to maintain that single mode is run.On the other hand, in the situation for keeping core diameter constant
Under, increase output power, heat dissipation problem and nonlinear effect can be generated.Therefore, currently, the above single mode fiber laser of multikilowatt
The problem of guaranteeing single mode operation while just facing further hoisting power.
Utility model content
In order to solve after reaching multikilowatt or more with optical fiber laser power, it not can guarantee what single mode ran and generated
Heat dissipation problem and nonlinear effect, the utility model proposes a kind of fiber reel knots for multikilowatt single mode fiber laser
Structure.It is that a kind of passed in multikilowatt single mode fiber laser system by design can be with the cap shaped fiber reel knot of gain fibre
Structure and cooling optical fiber groove shape, realize the function of carrying out cooling and modeling to biography energy and gain fibre simultaneously.It can be
While carrying out effective thermal control management in the above single mode fiber laser system of multikilowatt, inhibit nonlinear effect and reject to pass energy
With the higher order mode for generating and propagating in gain fibre, guarantee the fiber ring laser system single mode operation under high power.
Compared with prior art, the invention proposes one kind specifically for the above single mode full-optical-fiber laser of multikilowatt and to put
In the production of big device, guarantees to inhibit nonlinear effect while single mode operation, promote the optical fiber dish structure of output power, this knot
Structure is simple and easy, low in cost.
Detailed description of the invention
Fig. 1 can be used for the optical fiber dish structure of multikilowatt single mode fiber laser
The groove structure figure of Fig. 2 fiber reel
The structure chart of Fig. 3 elastic pressure cover plate
1. high power inputs fusing point；
2. high-power output fusing point；
3. sapphire euphotic cover plate；
4. arcuate furrow；
5. circular arc curve；
6. metal spring pressing；
7. threaded hole；
8. gain fibre；
9. groove；
10. copper sheet；
11. spring；
12. aluminium flake；
13. threaded hole；
14. fiber reel；Specific embodiment
It is bright that furtherly is made to the present invention combined with specific embodiments below
If Fig. 1 is the fiber reel structure chart that can be used for multikilowatt single mode fiber laser, it is that have multiple half by one
The fiber reel 14 of circular arc curve structure, sapphire euphotic cover plate 3 and the humorous metal spring pressing 6 of pressure adjustable are constituted, fiber reel
It is carved with the arcuate furrow 4 for being used to place certain cladding diameter optical fiber 8 of certain length in surface.Pass through multiple and different bending radius
Circular arc curve 5 carries out the selection of mode to the optical fiber that is coiled in arcuate furrow, can by other than basic mode other are all high
Rank mould all carries out filtering out for lossy, obtains pure single-mode laser output.Sapphire euphotic cover plate 3 is passive in optical fiber duct for protecting
High power fusing point 1 and 2 between optical fiber and gain fibre 8 guarantees that pump light caused by being mismatched due to welding and mould field is revealed
It can be leaked in air in time, reduce the heat build-up of optical fiber coating, realize the power output of multikilowatt or more.Entire
The humorous metal spring pressing 6 of four pressure adjustables is added in the coiling length of fiber reel, by entire gain fibre length
Applying different pressures on different location, it is made to generate different stress, being excited when for improving the high-power amplification of simple signal
The power threshold of Brillouin scattering realizes the high power laser light market of narrow linewidth, while can also be used to transmit in control optical fiber
Polarization state guarantees the linearly polarized light output of High Extinction Ratio.
As shown in Fig. 2, the bottom of groove it is fillable can the excellent liquid metal for conducting heat piece cream of heating conduction, then will pass energy
It is put into groove 9 with gain fibre 8, is placed in heat-conducting cream.Pass the pressure with elasticity that the upper surface of energy and gain fibre 8 are adjustable pressures
Power cover plate 6, as shown in figure 3, pressure cover plate 6 is the copper sheet 10 by upper surface, 12 groups of aluminium flake of intermediate spring 11 and lower surface
At.10 lower surface of copper sheet of two sides with threaded hole 13 be equipped with a spring 11, the other end of spring 11 be connected to a size with
The groove 9 to match with biography energy and 8 diameter of gain fibre is carved in the matched aluminium flake 12 of groove, 12 lower surface of aluminium flake.Pressure cover plate 6
Can be tightened up a screw by threaded hole 7 and be fixed in the surface of fiber reel 14, by the elastic realization of adjusting screw to pass can and
Pressure in 8 whole length section of gain fibre is adjusted.
Claims (6)
1. the fiber reel device that a kind of linear polarization optical-fiber laser of single mode single-frequency exports, it is characterised in that have multiple half by one
The fiber reel of circular arc curve structure, sapphire euphotic cover plate and the humorous metal spring pressing of pressure adjustable are constituted, optical fiber panel surface
It is carved with the arcuate furrow for being used to place certain cladding diameter optical fiber of certain length, the circular arc by multiple and different bending radius is curved
Road carries out the selection of mode to the optical fiber that is coiled in arcuate furrow, can by other all high-order modes other than basic mode all into
Row lossy filters out, and obtains pure single-mode laser output, sapphire euphotic cover plate is for protecting passive fiber and increasing in optical fiber duct
High power fusing point between beneficial optical fiber guarantees that pump light leakage caused by being mismatched due to welding and mould field can be leaked in time
In air, the heat build-up of optical fiber coating is reduced, realizes the power output of multikilowatt or more, it is long in the coiling of entire fiber reel
The humorous metal spring pressing of multiple pressure adjustables can be added on degree, by applying on different location in entire gain fibre length
Add different pressures, it is made to generate different stress, for stimulated Brillouin scattering when improving the high-power amplification of simple signal
Power threshold realizes the high power laser light market of narrow linewidth, while can also be used to the polarization state transmitted in control optical fiber, guarantees
The linearly polarized light of High Extinction Ratio exports.
2. the fiber reel device that the linear polarization optical-fiber laser of single mode single-frequency according to claim 1 exports, it is characterised in that:
The making material of used fiber reel is selected from aluminium, copper or magnesium alloy.
3. the fiber reel device that the linear polarization optical-fiber laser of single mode single-frequency according to claim 1 exports, it is characterised in that:
The plough groove type bullet shape of used fiber reel is selected from U-shaped, V-type or W-shape；Maximum gauge >=30cm of fiber reel, most
Small optical fiber disk diameter≤6cm.
4. the fiber reel device that the linear polarization optical-fiber laser of single mode single-frequency according to claim 1 exports, it is characterised in that:
Used Heat Conduction Material is liquid metal for conducting heat cream or liquid metal for conducting heat piece or indium foil, or the encapsulating with high thermal conductivity
Glue.
5. the fiber reel device that the linear polarization optical-fiber laser of single mode single-frequency according to claim 1 exports, it is characterised in that:
The pressure cover plate of used band elasticity is equipped with the copper sheet or aluminium flake or pure quartz plate or thermal conductive ceramic plate of spring.
6. the fiber reel device that the linear polarization optical-fiber laser of single mode single-frequency according to claim 1 exports, it is characterised in that:
Used fiber reel have multiple semicircular arc bends, arc-shaped radius be it is optional between 3~8cm, arc-shaped bend
Number is 1~20 optional, and the trench length that optical fiber panel surface places optical fiber is 8~60 meters, according to output laser power size
It is optional.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821210017.XU CN208738604U (en) | 2018-07-26 | 2018-07-26 | A kind of fiber reel device of linear polarization optical-fiber laser output that realizing single mode single-frequency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821210017.XU CN208738604U (en) | 2018-07-26 | 2018-07-26 | A kind of fiber reel device of linear polarization optical-fiber laser output that realizing single mode single-frequency |
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| CN208738604U true CN208738604U (en) | 2019-04-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411489A (en) * | 2019-07-16 | 2019-11-05 | 武汉理工大学 | The mode control device of sapphire fiber FP sensor interferometer spectrum enhancing |
| CN110698053A (en) * | 2019-11-04 | 2020-01-17 | 中国工程物理研究院应用电子学研究所 | Optical fiber cooling device capable of realizing efficient bending and mode selection |
| CN112751253A (en) * | 2020-12-29 | 2021-05-04 | 苏州创鑫激光科技有限公司 | Signal light high-order mode filtering method, high-order mode filtering amplification light path and laser |
-
2018
- 2018-07-26 CN CN201821210017.XU patent/CN208738604U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411489A (en) * | 2019-07-16 | 2019-11-05 | 武汉理工大学 | The mode control device of sapphire fiber FP sensor interferometer spectrum enhancing |
| CN110411489B (en) * | 2019-07-16 | 2024-01-30 | 武汉理工大学 | Mode control device for enhancing interference spectrum of sapphire optical fiber FP sensor |
| CN110698053A (en) * | 2019-11-04 | 2020-01-17 | 中国工程物理研究院应用电子学研究所 | Optical fiber cooling device capable of realizing efficient bending and mode selection |
| CN110698053B (en) * | 2019-11-04 | 2022-06-21 | 中国工程物理研究院应用电子学研究所 | Optical fiber cooling device capable of realizing efficient bending and mode selection |
| CN112751253A (en) * | 2020-12-29 | 2021-05-04 | 苏州创鑫激光科技有限公司 | Signal light high-order mode filtering method, high-order mode filtering amplification light path and laser |
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Effective date of registration: 20200428 Address after: 518105 607, building a, No.9 Furong Road, Tantou community, Songgang street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Gongda laser Co., Ltd Address before: Futian District Xiangmi Lake street in Shenzhen city of Guangdong province Zhuzilin 518040 Qiushi East Building 810 Patentee before: SHENZHEN FANYUE PHOTOELECTRIC Co.,Ltd. |