CN204144661U - A kind of fiber laser light path system - Google Patents
A kind of fiber laser light path system Download PDFInfo
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- CN204144661U CN204144661U CN201420479613.3U CN201420479613U CN204144661U CN 204144661 U CN204144661 U CN 204144661U CN 201420479613 U CN201420479613 U CN 201420479613U CN 204144661 U CN204144661 U CN 204144661U
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Abstract
The utility model relates to a kind of fiber laser light path system, comprise laser input coupling device, Transmission Fibers, fiber grating, optical fiber end cap, water-cooling system, holder and optical fiber cable, it is characterized in that: input laser inputs coupling device by laser, be coupled into Transmission Fibers, high anti-fiber grating is carved with in Transmission Fibers one end, the other end is carved with low anti-fiber grating, Transmission Fibers output welding end cap, above laser input coupling device and end cap are individually fixed on two holders, whole light path system is encapsulated in water-cooling system, optical fiber cable is surrounded outside water-cooling system.The utility model at Transmission Fibers two ends direct welding laser coupled device and end cap, and makes whole light path system be positioned in water cooling plant, surrounds cable protection outside structure.The utility model has that volume is little, reliability is high, and integrated level is high, low cost and other advantages, on the basis ensureing high light beam quality, can realize high power laser light and export.
Description
Technical field:
The utility model belongs to fiber laser technology field, for the fiber laser light path system by complexity, be integrated in a simple fiber laser light path system, this invention has that volume is little, reliability is high, integrated level is high, low cost and other advantages, on the basis ensureing high light beam quality, the stable output of high power laser light can be realized.
Technical background:
Fiber laser is the third generation new laser after traditional gas laser and solid state laser, there is the advantages such as compact conformation, life-span long, non-maintaining, good beam quality, energy-conserving and environment-protective, be successfully applied to the fields such as machining, medical treatment, automobile making and military affairs.
Traditional fiber laser by: circuit control unit, semiconductor pumped unit, optical-fiber laser optical path unit, power conversion unit form.Wherein optic fibre light path unit and power conversion unit are the keys that fiber laser is different from semiconductor laser.At present, commercial fiber laser be all using these two parts as independent assembly, assemble.
Fiber laser and semiconductor laser are the lasers of current latest generation, and compared to fiber laser, semiconductor laser is not owing to having Active Optical Fiber optical path unit, so cost, conversion efficiency, volume etc. conveniently have obvious advantage; In addition along with light beam closes the development of bundle technology, semiconductor laser, on beam quality, just progressively close to fiber laser, just progressively substitutes fiber laser in fields such as some welding, cutting, claddings.But at manufacture fields such as some accurate cutting, marks, needing nearly single-mode beams to export, this respect, is that semiconductor laser cannot replace.
Summary of the invention:
The purpose of this utility model provides a kind of fiber laser light path system, by integrating, laser optical path unit and transmission unit, being combined into an entirety, not only make the structure of laser compacter, and cost significantly being reduced.
Of the present utility modelly to be achieved through the following technical solutions:
A kind of fiber laser light path system, comprise laser input coupling device, Transmission Fibers, fiber grating, optical fiber end cap, water-cooling system, holder and optical fiber cable, it is characterized in that: input laser inputs coupling device by laser, be coupled into Transmission Fibers, high anti-fiber grating is carved with in Transmission Fibers one end, the other end is carved with low anti-fiber grating, Transmission Fibers output welding end cap, above laser input coupling device and end cap are individually fixed on two holders, whole light path system is encapsulated in water-cooling system, optical fiber cable is surrounded outside water-cooling system.
Input laser is coupled into fibre core or the covering of Transmission Fibers by laser input coupling device.
Described laser input coupling device directly and Transmission Fibers welding or enter Transmission Fibers by Space Coupling.
Described laser input coupling device is tapered optical rod, NX1 bundling device, (N+1) x1 bundling device or optical lens.
Transmission Fibers is all doped fiber or part is doped fiber, and part is non-doped fiber.
Transmission Fibers output welding end cap, the material of end cap is the material of resistance to high power, selects high-purity vitreous silica, calcirm-fluoride, magnesium fluoride, jewel, silicon or zinc selenide material.
Above-mentioned laser input coupling device, optical fiber end cap are fixed on holder, and laser input coupling device, Transmission Fibers, fiber grating, optical fiber end cap, carry out water-cooling by same water cooling plant.
One deck optical fiber cable is surrounded to protect this light path system outside water cooling plant.
The utility model, by making the light path system of different size, can be expanded same input light source.Such as, cutting, welding, cladding, three requires different for beam quality, also different separately for fibre diameter.We by changing the light path system of different size, can meet the different demand of client, and Renewal process are simple, is easy to operation according to the utility model.Such as cladding, we select undoped Transmission Fibers, directly input semiconductor laser can be coupled into light path system; For cutting, we select doped fiber, and two ends make grating, can output high-power single-mode laser.
The utility model is used for the fiber laser light path system of complexity, be integrated in a simple transmission laser system, this invention has that volume is little, reliability is high, and integrated level is high, low cost and other advantages, on the basis ensureing high light beam quality, the stable output of high power laser light can be realized.The utility model utilizes same semiconductor pumping sources, by changing different parts, last Output of laser can be made to change between optical-fiber laser and semiconductor laser, greatly strengthen the diversity of laser.
Accompanying drawing illustrates:
Fig. 1 be the utility model embodiment provide structural representation.
Fig. 2 is input 915nm pumping laser, exports the schematic diagram of 1064nm single-mode laser;
Fig. 3 is the laser system schematic diagram that this light path system forms with each laser module.
Embodiment:
By reference to the accompanying drawings the utility model is further described.
Embodiment is as Fig. 1, shown in Fig. 2, a kind of fiber laser light path system, comprise laser input coupling and fill 1, Transmission Fibers 3, fiber grating (2, 4), optical fiber end cap 5, water-cooling system 8, two holders (9, 10) and optical fiber cable 11, it is characterized in that: input laser is by laser input coupling device 1, be coupled into Transmission Fibers 3, high anti-fiber grating 2 is carved with in Transmission Fibers 3 one end, the other end is carved with low anti-fiber grating 4, Transmission Fibers 3 output welding end cap 5, above laser input coupling device 1 and end cap 5 are individually fixed in two holders (9, 10) on, whole light path system is encapsulated in water-cooling system 8, water-cooling system 8 is provided with water inlet 6, delivery port 7, optical fiber cable 11 is surrounded outside water-cooling system.
As shown in Figure 3, to export single-mode laser, its optical-fiber laser light path system implementation method is as follows:
1, input 915nm pumping laser by laser coupled device, be coupled into 20/400 double clad, this fiber core NA=0.065, covering is octagon, fibre core doping Yb; Laser coupled device one end plated film, rete is anti-reflection to 915nm laser, and transmitance is greater than 99.8%, and high anti-to 1080nm, reflectivity is greater than 99%, and coupling device is tapered, in addition one end diameter 395um, with 20/400 fused fiber splice; Input pumping laser, by coupling device, is coupled in doubly clad optical fiber, and coupling efficiency requires to be greater than 99%, by controlling the tapering of conical device, can control, the angle of divergence of injection fibre;
2, according to doped fiber pump absorption rate, can make fiber lengths, general doped fiber length is greater than 10 meters, and doped fiber is through in an airtight sleeve pipe;
3, other one end welding one section of diameter 10mm of doped fiber, length 28mm quartz pushrod, quartz pushrod output surface is coated with anti-reflection film, and for 1060-1090nm wavelength, transmitance is greater than 99.8%;
4, to each 1 meter of, doped fiber two ends, divest 6cm length coat by window, inscribe high reflective grid at input, inscribe low reflective grid to output, a pair raster center wavelength 1064nm, after inscription, applies with coating machine; Also can use passive fiber, inscribe grating, and then with doped fiber welding, two ends passive fiber again with input coupling device, export end cap welding, after welding, fusion point need apply protection, also can reach above effect;
5, above-mentioned input coupling device, end cap are encapsulated on metal holder respectively, holder and above-mentioned 2 airtight sleeve pipes encapsulate, being convenient to location outside holder, fixing, as adopted QBH mechanical structure, being convenient to locate with input laser with output processing unit (plant), mate;
6, water-cooling system makes circulating water, is directly combined with coupling device, optical fiber, end cap; Be convenient to the heat that high power produces, directly walked by water-band;
7, outside water cooling plant, surround metal optical cable, metal optical cable two is connection metal holder respectively, ensures the Mechanical Reliability of whole laser light path system.
The single-mode laser that this structure can realize within kilowatt rank exports.
Claims (1)
1. a fiber laser light path system, comprise laser input coupling device, Transmission Fibers, fiber grating, optical fiber end cap, water-cooling system, holder and optical fiber cable, it is characterized in that: input laser inputs coupling device by laser, be coupled into Transmission Fibers, high anti-fiber grating is carved with in Transmission Fibers one end, the other end is carved with low anti-fiber grating, Transmission Fibers output welding end cap, above laser input coupling device and end cap are individually fixed on two holders, whole light path system is encapsulated in water-cooling system, optical fiber cable is surrounded outside water-cooling system.
2. fiber laser light path system as claimed in claim 1, is characterized in that: input laser is coupled into fibre core or the covering of Transmission Fibers by laser input coupling device.
3. fiber laser light path system as claimed in claim 1, is characterized in that: described laser input coupling device directly and Transmission Fibers welding or enter Transmission Fibers by Space Coupling.
4. fiber laser light path system as claimed in claim 1, is characterized in that: described laser input coupling device is tapered optical rod, NX1 bundling device, (N+1) x1 bundling device or optical lens.
5. fiber laser light path system as claimed in claim 1, is characterized in that: Transmission Fibers is all doped fiber or part is doped fiber, and part is non-doped fiber.
6. fiber laser light path system as claimed in claim 1, is characterized in that: the material of end cap is the material of resistance to high power.
7. fiber laser light path system as claimed in claim 6, is characterized in that: the high-purity vitreous silica of the described Material selec-tion of resistance to high power, calcirm-fluoride, magnesium fluoride, jewel, silicon or zinc selenide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479613.3U CN204144661U (en) | 2014-08-22 | 2014-08-22 | A kind of fiber laser light path system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420479613.3U CN204144661U (en) | 2014-08-22 | 2014-08-22 | A kind of fiber laser light path system |
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| CN201420674569.1U Division CN204290020U (en) | 2014-08-22 | 2014-08-22 | A kind of fiber laser light path system |
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| CN204144661U true CN204144661U (en) | 2015-02-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242024A (en) * | 2014-08-22 | 2014-12-24 | 武汉锐科光纤激光器技术有限责任公司 | Light path system of optical fiber laser device |
| CN113325517A (en) * | 2021-08-03 | 2021-08-31 | 中国工程物理研究院激光聚变研究中心 | Optical fiber end cap and optical fiber laser |
-
2014
- 2014-08-22 CN CN201420479613.3U patent/CN204144661U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242024A (en) * | 2014-08-22 | 2014-12-24 | 武汉锐科光纤激光器技术有限责任公司 | Light path system of optical fiber laser device |
| CN113325517A (en) * | 2021-08-03 | 2021-08-31 | 中国工程物理研究院激光聚变研究中心 | Optical fiber end cap and optical fiber laser |
| CN113325517B (en) * | 2021-08-03 | 2021-10-15 | 中国工程物理研究院激光聚变研究中心 | Optical fiber end cap and optical fiber laser |
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| GR01 | Patent grant | ||
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Address after: 430074 East Lake science and technology zone, Wuhan province high tech Avenue, No. 999, the future of science and technology city of the city of Hubei Patentee after: WUHAN RAYCUS FIBER LASER TECHNOLOGIES CO., LTD. Address before: 430223 East Lake New Technology Development Zone, Huazhong University of Science and Technology, Wuhan science and technology park innovation base, building No. 10, building No. Patentee before: Wuhan Raycus Fiber Laser Technologies Co., Ltd. |