CN218456224U - Composite annular light spot laser - Google Patents
Composite annular light spot laser Download PDFInfo
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- CN218456224U CN218456224U CN202222259926.5U CN202222259926U CN218456224U CN 218456224 U CN218456224 U CN 218456224U CN 202222259926 U CN202222259926 U CN 202222259926U CN 218456224 U CN218456224 U CN 218456224U
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Abstract
The utility model provides a compound annular facula laser belongs to laser technical field. The composite annular light spot laser is internally provided with an optical fiber laser module, the optical fiber laser module is connected with the semiconductor laser module, the output end of the semiconductor laser module is connected with the composite annular light spot transmission optical fiber, composite laser output by the optical fiber laser module and the semiconductor laser module enters the composite annular light spot transmission optical fiber, and the composite annular light spot is output by the composite annular light spot transmission optical fiber. The utility model discloses reducible welding phenomenon of splashing.
Description
Technical Field
The utility model relates to a laser instrument designs technical field. In particular to a composite annular light spot laser.
Background
Patent application number is 2021220550103's patent, discloses an annular facula adjusting device, mainly through the round lens, becomes an annular facula with a laser beam, and in actual welding process, single light beam often can arouse the production of welding splash phenomenon.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that welding spatter is easy to occur to a single light beam, the composite annular light spot laser is provided to reduce the welding spatter phenomenon.
Be equipped with the optic fibre laser module in the compound annular facula laser instrument, the optic fibre laser module is connected with the semiconductor laser module, compound annular facula transmission fiber is connected to the output of semiconductor laser module, by the optic fibre laser module with the compound laser of semiconductor laser module output gets into compound annular facula transmission fiber, by compound annular facula transmission fiber output complex annular facula.
Optionally, a laser output module is arranged at an output end of the composite annular light spot transmission optical fiber, and a focusing lens for focusing the annular light spot is arranged in the laser output module.
Optionally, the number of the semiconductor laser modules is multiple, the output end of each semiconductor laser module is connected with the composite annular light spot beam combining module, and the composite annular light spot beam combining module is connected with the composite annular light spot transmission optical fiber.
Optionally, the composite annular light spot transmission fiber is a 4-clad transmission fiber, the refractive index is n1 fiber core refractive index, n2 first clad refractive index, n3 annular light guide layer refractive index and n4 second clad refractive index, and the refractive index correspondence relationship of the fiber is n3 > n2, n3 > n4, n1 > n2, n1= n3, and n2= n4.
Optionally, the composite annular light spot transmission fiber is a 4-clad transmission fiber, and includes a fiber core 100um, a first clad 130um, an annular light guide layer 300um, a second clad 460um, and a coating layer 630um; the corresponding refractive indexes are n1 fiber core refractive index, n2 first cladding refractive index, n3 annular light guide layer refractive index and n4 second cladding refractive index, and the refractive indexes of the optical fiber have the corresponding relations that n3 is larger than n2, n3 is larger than n4, n1 is larger than n2, n1= n3, and n2= n4.
Optionally, be equipped with a plurality of forward laser pumping modules, the output of forward laser pumping module and the forward access end of closing a bundle of module are connected, the output that the forward was closed a bundle of module is equipped with high reflectivity fiber grating module, low reflection fiber grating module is connected to high reflectivity fiber grating module's output, low reflection fiber grating module's output is equipped with backward and closes a bundle of module, the backward output that closes a bundle of module is connected with backward laser pumping module, the backward output that closes a bundle of module still is connected with cladding light power and strips the module, cladding light power strips the output of module and is equipped with optical fiber power letter detection module, the input that compound annular facula closed a bundle module is connected to optical fiber power letter detection module's output, the input that compound annular facula closed a bundle module still is connected with a plurality of semiconductor laser modules, compound annular facula closed bundle module's output is connected with many cladding power and strips the module, many cladding power module's output is connected with laser power detection module, laser power detection module's output is equipped with compound annular facula transmission fiber, the output that compound annular facula transmission fiber is equipped with laser output module.
Optionally, the emission wavelength of the forward laser pumping module is 910 to 930nm.
Optionally, the high-reflectivity fiber grating module is a fiber grating with periodic chirp, the fiber type is 20/400 passive fiber, and the fiber grating module has reflectivity of more than 99% for 1080nm laser and has directivity.
Optionally, the backward laser pumping module is a semiconductor fiber coupling module with emission wavelength of 910 to 930nm, the output fiber is 135/155, and the output power is 260 to 280w.
Optionally, the semiconductor laser module is an optical fiber coupled semiconductor laser with a pigtail 135/155, the output wavelength is 910 to 930nm, the output optical fiber of the semiconductor laser module is connected with the pump input optical fiber of the composite annular light spot beam combining module in a matching manner, and the semiconductor laser power is provided for the optical fiber and the semiconductor composite annular light spot laser.
The utility model aims at providing a compound annular facula laser instrument. The center of an output beam of the laser fiber and semiconductor annular light spot composite laser is a continuous fiber laser, and the periphery of the fiber is a semiconductor annular light spot laser; the ring laser formed by combining the optical fiber and the semiconductor laser has the advantages of both the optical fiber and semiconductor composite laser and the ring facula laser. The peripheral laser is an annular light spot laser, has more uniform power density, and can better inhibit welding spatter.
Drawings
Fig. 1 is a schematic diagram of a ring laser combining an optical fiber and a semiconductor laser according to the present invention;
FIG. 2 is a simplified diagram of the composite annular light spot transmission optical fiber structure of the present invention;
FIG. 3 is a refractive index distribution diagram of the composite annular light spot transmission optical fiber of the present invention;
fig. 4 is a cross-sectional view of the optical fiber and semiconductor composite laser spot of the present invention;
FIG. 5 is a cross-sectional view of a conventional annular spot fiber laser spot;
fig. 6 is a cross-sectional view of the optical fiber and semiconductor composite annular spot laser of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "inner", "upper", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the term "connected" is to be understood in a broad sense, e.g. fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
The present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1-6, it is an object of the present invention to provide a composite annular spot laser. The embodiment comprises an 11 indicating laser module, a 12 indicating light protection module, a 13 forward laser pumping module, a 14 forward beam combination module, a 15 high-reflectivity fiber grating module, a 16 laser working substance module, a 17 low-reflection fiber grating module and an 18; the device comprises a reverse beam combination module, a 19 reverse laser pumping module, a 20 cladding light power stripping module, a 21 optical fiber power signal detection module, a 22 semiconductor laser module, a 23 composite annular light spot beam combination module, a 24 multi-cladding power stripping module, a 25 laser power detection module, a 26 composite annular light spot transmission optical fiber and a 27 laser output module. Compared with a traditional annular light spot optical fiber laser, the optical fiber and semiconductor composite annular light spot laser emits a semiconductor laser with a shorter wavelength of 900 to 1000nm at the periphery of a light beam, the absorption rate of metal to the laser is higher, the utilization rate of the laser is higher, the reflection of the laser can be effectively inhibited, the divergence angle of the semiconductor laser is larger than that of the optical fiber laser, the power density of the semiconductor annular light spot is more uniform, welding splashing can be better inhibited in actual welding, and the effect of attractive welding seams can be realized.
The 11 indicating laser module is a red laser module with emission wavelength of 630nm to 650nm and is provided with an output optical fiber 9/125;12, indicating that the optical protection module is a cladding optical power stripper, the optical fiber is 20/250, the cladding stripping power reaches 15dB, the 13 forward laser pumping modules are 6 semiconductor optical fiber coupling modules with emission wavelengths of 910 to 930nm, the output optical fiber is 135/155, and the output power is 260 to 280W; the 14 forward beam combining module is (6 + 1) x1 forward signal pumping beam combiner, the input pumping optical fiber is connected with the output optical fiber of the 13 forward laser pumping module, the optical fiber pigtail is 135/155, the signal input optical fiber is connected with the 20/250 optical fiber of the 12 indication light protection module, and the output optical fiber is connected with the input optical fiber of the 15 high-reflectivity optical fiber grating module; the 15 high-reflectivity fiber grating module is provided with a periodic chirped fiber grating, the fiber type is 20/400 passive fiber, and the fiber has directivity for the reflectivity of 1080nm greater than 99%; the 16 laser working substance module is a 20/400 active optical fiber with the length of 36-40M; the 17 low-reflection fiber grating module is provided with a periodic chirped fiber grating, has a reflectivity of 10% to 1080nm wavelength, is a 20/400 passive fiber, and is connected with the 20/400 fiber of the 16 laser working substance module; the output optical fiber is connected with the input optical fiber of the 18 reverse beam combining module; the 18 reverse beam combining module is (6 + 1) x1 reverse signal pumping beam combiner, the input pumping optical fiber is 135/155 and is connected with the output optical fiber of the 19 forward and reverse laser pumping module in a matching way, the input optical fiber 20/400 is connected with the input optical fiber of the 17 low-reflectivity optical fiber module, and the output optical fiber is connected with the optical fiber of the 20 cladding optical power stripping module; the 19 reverse laser pumping modules are 6 semiconductor fiber coupling modules with emission wavelengths of 910-930nm, the output optical fiber is 135/155, and the output power is 260-280W; the 20 cladding optical power stripping module is an optical fiber cladding power stripper and mainly used for stripping the pumping power of an optical fiber cladding and reducing the heating of a device, and an output optical fiber of the stripping module is connected with an input optical fiber of the 23 composite annular light spot beam combining module; the optical fiber power detection module 21 is a photoelectric detector and mainly used for detecting the laser power intensity generated by the optical fiber laser through a photoelectric probe; the 22 semiconductor laser module is an optical fiber coupling semiconductor laser with a tail fiber 135/155, the output wavelength of the optical fiber is 910-930nm, the output optical fiber is connected with the pump input optical fiber of the 23 composite annular light spot beam combining module in a matching mode, and semiconductor laser power is provided for the optical fiber and the semiconductor composite annular light spot laser; the 23 composite annular light spot beam combining module is an optical fiber beam combining device, a signal input optical fiber 20/250 of the 23 composite annular light spot beam combining module is connected with an output optical fiber of a 20 cladding optical power stripper in a matching way, and a pumping input optical fiber 135/155 of the 23 composite annular light spot beam combining module is connected with an output optical fiber of a 22 semiconductor laser module in a matching way; the output optical fiber is a composite annular light spot transmission optical fiber 17, is connected with the input optical fiber of the 24 multi-cladding power stripping module and is mainly used for power synthesis of laser power output by the optical fiber laser and laser power output by the semiconductor laser and central beam and annular beam synthesis; the 24 multi-cladding power stripping module is a power stripping device of a multi-cladding outer-ring cladding, the optical fiber of the multi-cladding power stripping module is a 26 composite annular light spot transmission optical fiber, and the residual power of the annular semiconductor laser outer cladding can be stripped in the working process; the laser power detection module 25 is a photoelectric detector, mainly receives optical power through a photoelectric probe to generate an electric signal, and detects a power signal output by the optical fiber and semiconductor laser composite annular light spot laser through the electric signal; the 26 composite annular light spot transmission fiber is a 4-clad transmission fiber, and comprises a fiber core 100um, a first clad 130um, an annular light guide layer 300um, a second clad 460um and a coating layer 630um; the refractive indexes of the optical fibers with the corresponding refractive indexes of n1 fiber core refractive index, n2 first cladding refractive index, n3 annular light guide layer refractive index and n4 second cladding refractive index are corresponding to the refractive indexes that n3 is larger than n2, n3 is larger than n4, n1 is larger than n2, n1= n3 and n2= n4; due to the total reflection principle, laser can be stably transmitted in a fiber core and an annular light guide layer, laser light generated by a continuous fiber laser is transmitted in the fiber core 100um of the composite annular facula transmission fiber, and laser light generated by a semiconductor laser is transmitted in the annular light guide layers 130um to 300um of the composite transmission fiber; the 27 laser output module is a laser output head, the laser output module can be a water-cooling QBH, and the output optical fiber used by the laser output module is a 26 composite annular light spot transmission optical fiber;
based on changing the utility model discloses the technique has realized optic fibre and the compound annular facula laser of semiconductor laser, and its output optical fibre core 100um has realized the 1080nm laser output of 2000W, and its 130 to 300um covering has realized the 915nm wave band semiconductor laser power output that has surpassed 1000W power, and its output facula appearance sees in optic fibre and the compound annular facula laser cross-sectional drawing of semiconductor.
Referring to FIG. 2,1 is a core; 2 is a first cladding layer; 3 is a second cladding layer; 4 is a third cladding layer; 5 is a coating layer;
referring to FIG. 3, n1 core refractive index; n2 first cladding refractive index; n3 second cladding refractive index; n4 third cladding refractive index.
Fig. 4 to 6 are light spot diagrams obtained by an M2 testing instrument, and by comparing the three diagrams, the energy density distribution of the focal spot position of the light beam can be seen, and the energy density distribution of the annular light spot formed by combining the optical fiber and the semiconductor laser in fig. 4 and 6 is more uniform than that of the conventional annular light spot in fig. 5, so that the welding spatter can be better inhibited in actual welding, and the attractive effect of the welding seam can be realized.
The technical principle of the present invention is described above with reference to the specific embodiments. The description is made for the purpose of illustrating the principles of the invention and is not to be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive step, and these embodiments are all intended to fall within the scope of the present invention.
Claims (10)
1. The utility model provides a compound annular facula laser instrument, its characterized in that is equipped with the optic fibre laser module, the optic fibre laser module is connected with semiconductor laser module (22), compound annular facula transmission fiber (26) are connected to the output of semiconductor laser module (22), by the optic fibre laser module with the compound laser of semiconductor laser module (22) output gets into compound annular facula transmission fiber (26), by compound annular facula is exported to compound annular facula transmission fiber (26).
2. The composite annular spot laser according to claim 1, wherein the output end of the composite annular spot transmission fiber (26) is provided with a laser output module (27), and the laser output module (27) is provided with a focusing lens for focusing the annular spot.
3. The composite annular spot laser according to claim 1, wherein the number of the semiconductor laser modules (22) is multiple, the output ends of the semiconductor laser modules (22) are connected with a composite annular spot beam combining module (23), and the composite annular spot beam combining module (23) is connected with a composite annular spot transmission optical fiber (26).
4. The composite ring-spot laser of claim 1,
the composite annular light spot transmission fiber (26) is a 4-clad transmission fiber, the refractive indexes are n1 fiber core refractive index, n2 first cladding refractive index, n3 annular light guide layer refractive index and n4 second cladding refractive index, and the refractive indexes of the fiber have the corresponding relations of n3 > n2, n3 > n4, n1 > n2, n1= n3 and n2= n4.
5. The composite annular spot laser according to claim 1, wherein the composite annular spot transmission fiber (26) is a 4-clad transmission fiber, a core 100um, a first cladding 130um, an annular light guiding layer 300um, a second cladding 460um, a coating 630um; the corresponding refractive indexes are n1 core refractive index, n2 first cladding refractive index, n3 annular light guide layer refractive index and n4 second cladding refractive index, and the refractive indexes of the optical fiber have the corresponding relations that n3 is larger than n2, n3 is larger than n4, n1 is larger than n2, n1= n3, and n2= n4.
6. The composite annular light spot laser device according to claim 1, wherein a plurality of forward laser pumping modules (13) are provided, an output end of each forward laser pumping module (13) is connected with an access end of a forward beam combining module (14), an output end of each forward beam combining module (14) is provided with a high-reflectivity fiber grating module (15), an output end of each high-reflectivity fiber grating module (15) is connected with a low-reflectivity fiber grating module (17), an output end of each low-reflectivity fiber grating module (17) is provided with a backward beam combining module (18), an output end of each backward beam combining module (18) is connected with a backward laser pumping module (19), an output end of each backward beam combining module (18) is further connected with a cladding light power stripping module (20), an output end of each cladding light power stripping module (20) is provided with an optical fiber power signal detection module (21), an output end of each optical power signal detection module (21) is connected with an input end of a composite annular light spot combining module (23), an input end of each composite annular light spot combining module (23) is further connected with a plurality of semiconductor power stripping modules (22), an output end of the composite annular light spot transmission module (24) is connected with a composite annular light spot detection module (25), and the output end of the composite annular light spot transmission optical fiber (26) is provided with a laser output module (27).
7. The composite annular spot laser as claimed in claim 6, wherein the emission wavelength of the forward laser pumping module (13) is 910-930 nm.
8. The composite annular spot laser according to claim 6, wherein the high reflectivity fiber grating module (15) is a fiber grating with periodic chirp, the fiber type is 20/400 passive fiber, and the fiber grating has reflectivity of more than 99% for 1080nm laser and directivity.
9. The composite annular light spot laser device according to claim 6, wherein the reverse laser pumping module (16) is a semiconductor fiber coupling module with an emission wavelength of 910 to 930nm, the output fiber is 135/155, and the output power is 260 to 280W.
10. The composite annular spot laser device according to claim 1, wherein the semiconductor laser module (22) is a fiber coupled semiconductor laser with a pigtail 135/155, the output wavelength is 910-930 nm, and the output fiber of the semiconductor laser module (22) is connected with the pump input fiber of the composite annular spot beam combining module (23) in a matching manner to provide semiconductor laser power for the fiber and the semiconductor composite annular spot laser device.
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| CN202222259926.5U CN218456224U (en) | 2022-08-26 | 2022-08-26 | Composite annular light spot laser |
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| CN202222259926.5U CN218456224U (en) | 2022-08-26 | 2022-08-26 | Composite annular light spot laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116482800A (en) * | 2023-06-20 | 2023-07-25 | 深圳市创鑫激光股份有限公司 | Special optical fiber, laser and laser processing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116482800A (en) * | 2023-06-20 | 2023-07-25 | 深圳市创鑫激光股份有限公司 | Special optical fiber, laser and laser processing system |
| CN116482800B (en) * | 2023-06-20 | 2023-10-03 | 深圳市创鑫激光股份有限公司 | Special optical fiber, laser and laser processing system |
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