CN104882770A - Fiber laser output head having light beam focusing characteristic and power monitoring function - Google Patents
Fiber laser output head having light beam focusing characteristic and power monitoring function Download PDFInfo
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- CN104882770A CN104882770A CN201510316146.1A CN201510316146A CN104882770A CN 104882770 A CN104882770 A CN 104882770A CN 201510316146 A CN201510316146 A CN 201510316146A CN 104882770 A CN104882770 A CN 104882770A
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Abstract
The invention relates to a fiber laser output head having a light beam focusing characteristic and a power monitoring function. The fiber laser output head is composed of a laser power transmission device and an external packaging device. When myriawatt-level high-power laser passes through the laser output head, a mode stripper strips laser in forward transmission and residual pump light in a cladding layer; and a forward light detector in a photoelectric detection device detects a power of stripped scattered light. The laser is emitted by a quartz end cap; and because of increasing of an emitting end area, the emergent light power density is substantially reduced. The laser outputted by the quartz end cap is focused by a focusing lens and the size of the light spot is controlled by a focal length adjusting device. Besides, when the laser head is used for carrying out laser processing, the power of generated reflected return light is detected by a reverse light detector in the photoelectric detection device. And then a cooling device including a water flow guiding pipe, an inflow device, and a water outgoing device carries away lots of heat generated by working of the mode stripper.
Description
Technical field
The invention discloses a kind of novel optical fiber Laser output head with band light beam focus characteristics and power monitoring function, belong to fiber laser technology field.
Background technology
Along with the power of fiber laser improves constantly, also more and more higher to the requirement of laser output, can be excessive and burnt due to power density on fiber-optic output face, when using Optical Fiber Transmission high power laser light, the subject matter that runs into when being the work of Laser output head that fiber end face reflection, optical damage and operating power are excessive.Based on above reason, before fiber end face, weld quartzy end cap and to its cooling encapsulation, and in Laser output head, add photoelectric monitoring system can effectively solve the problem.In addition, add light beam focusing system in quartzy end cap front end and light beam is focused on, improve the spot size of Output of laser, it can be made to be directly used in laser processing.
Laser output head is the key device of fiber laser, only has and grasps its technology of preparing, prepare the High-performance lasers delivery of quality, the realistic demand of performance, the object could realize high-capacity optical fiber laser production domesticization, reducing costs.This project meaning is by independent research high-capacity optical fiber laser Primary Component---Laser output head, thus steps essential step for the production domesticization of high-capacity optical fiber laser.
Summary of the invention
Originally the invention discloses a kind of novel optical fiber Laser output head with band light beam focus characteristics and power monitoring function, achieve the Laser output of myriawatt level.
This optical-fiber laser delivery is made up of laser power transmission device and outer enclosure device, laser power transmission device comprises light beam focusing system, quartzy end cap 3, optical fiber 4 and pattern stripper 12, and outer enclosure device comprises photoelectric monitoring system 5, current deflecting pipe 6, metal shell 7, clamping snap close 8, water supply connector 9, water out adapter 10, metal optical cable joint 11; Light beam focusing system comprises condenser lens 1, focal length adjustment device 2; Light beam focusing system focuses on and defencive function with light beam, and focal length size is adjustable, makes Output of laser be directly used in laser processing, plays the effect preventing quartzy end cap 3 from damaging simultaneously.The structure of quartz end cap 3 reduces the optical power density of laser emitting on the one hand by increasing emittance area, make it far below the damage threshold of fiber end face; On the other hand by effectively Fresnel reflection can be prevented at end face plating anti-reflection film.Pattern stripper 12 can the laser of simultaneously forward transmission in peeling optical fibre covering and remnant pump light, and along the laser that end face reflection returns, guarantee the stable transfer of laser in fibre core.Photoelectric monitoring system 5 detects the scattered light power and reflected light power that separate respectively by front and back detector, monitor and control the operating state of Laser output head.Waste heat is taken away by water circulation by the water-cooling system be made up of structures such as current deflecting pipes, and the control of temperature when can realize working to Laser output head, the water simultaneously in pipe is a part for pattern stripper, can take away the laser separated.Metal shell is package main body structure, for the protection of be connected other devices.Clamping snap close plays fixation.Metal optical cable joint is used for fixing and being connected optical cable.
The invention discloses a kind of novel optical fiber Laser output head with band light beam focus characteristics and power monitoring function.Before fiber end face, weld quartzy end cap and its cooling is encapsulated, and add light beam focusing system and photoelectric monitoring system in Laser output head, improving the overall permanence of Output of laser, it can be made to be directly used in laser processing.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of Laser output head of the present invention.
Fig. 2 is the structural representation of internal schema stripper of the present invention.
In figure: 1, condenser lens, 2, focal length adjustment device, 3, quartzy end cap, 4, optical fiber, 5, photoelectric detection system, 6, current deflecting pipe, 7, metal cartridge, 8, clamping snap close, 9, water feed apparatus, 10, discharging device, 11, metal optical cable joint, 12, pattern stripper.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, a kind of optical-fiber laser delivery with band light beam focus characteristics and power monitoring function, this optical-fiber laser delivery is made up of laser power transmission device and outer enclosure device, laser power transmission device comprises light beam focusing system, quartzy end cap 3, optical fiber 4 and pattern stripper 12, and outer enclosure device comprises photoelectric monitoring system 5, current deflecting pipe 6, metal shell 7, clamping snap close 8, water supply connector 9, water out adapter 10, metal optical cable joint 11; Light beam focusing system comprises condenser lens 1, focal length adjustment device 2.
Condenser lens 1 is embedded in focal length adjustment device 2 end.
One end and focal length adjustment device 2 inwall of metal cartridge 7 are fixed, and the other end and the metal optical cable joint 11 of metal cartridge 7 are threaded connection fixing; Quartz end cap 3 is arranged on center, metal cartridge 7 end.
Quartz one end of end cap 3 is connected by welding mode with one end of optical fiber 4, is provided with pattern stripper 12 at optical fiber 4 other end; Pattern stripper 12 is arranged on the center of current deflecting pipe 6, and current deflecting pipe 6 is connected with water feed apparatus 9, discharging device 10, and water feed apparatus 9, discharging device 10 are symmetricly set on current deflecting pipe 6 both sides; Described quartzy end cap 3, optical fiber 4, clamping snap close 8, current deflecting pipe 6, pattern stripper 12 are arranged along the axial direction of metal cartridge 7.
Photoelectric detection system 5 is arranged between current deflecting pipe 6 and metal cartridge 7 surface.Clamping snap close 8 is the lock shape structure of metal cartridge 7 outer surface.Metal optical cable joint 11 and metal cartridge 7 afterbody are threaded connection fixing; Described photoelectric detection system 5, water feed apparatus 9, discharging device 10 are arranged along the radial direction of metal cartridge 7.
Operation principle of the present invention: when myriawatt class large power laser is by this Laser output head, first, pattern stripper 12 divests laser and the remnant pump light of forward transmission in covering, and meanwhile, the forward photo-detector in photoelectric detection system 5 detects the scattered light power separated.Then, laser is by the outgoing of quartzy end cap 3, and due to the increase of exit end area, emergent light power density significantly reduces, and effectively prevent the damage of end face, adds the stability of a system.The laser exported by quartzy end cap 3 is focused lens 1 subsequently and focuses on, and spot size is controlled by focal length adjustment device 2.In addition, when utilizing described laser head to carry out laser processing, the power of the reflected light of generation is recorded by the backlight detector in photoelectric detection system 5.Finally, a large amount of heat produced when the cooling device band walking modes stripper 12 be made up of current deflecting pipe 6, water feed apparatus 9 and discharging device 10 works.
Claims (3)
1. one kind has the optical-fiber laser delivery of band light beam focus characteristics and power monitoring function, it is characterized in that: this optical-fiber laser delivery is made up of laser power transmission device and outer enclosure device, laser power transmission device comprises light beam focusing system, quartz end cap (3), optical fiber (4) and pattern stripper (12), outer enclosure device comprises photoelectric monitoring system (5), current deflecting pipe (6), metal shell (7), clamping snap close (8), water supply connector (9), water out adapter (10), metal optical cable joint (11), light beam focusing system comprises condenser lens (1), focal length adjustment device (2),
Condenser lens 1 is embedded in focal length adjustment device 2 end;
One end and focal length adjustment device (2) inwall of metal cartridge (7) are fixed, and the other end and the metal optical cable joint (11) of metal cartridge (7) are threaded connection fixing; Quartz end cap (3) is arranged on metal cartridge (7) center, end;
One end of quartz end cap (3) is connected with one end of optical fiber (4), is provided with pattern stripper (12) at optical fiber (4) other end; Pattern stripper (12) is arranged on the center of current deflecting pipe (6), current deflecting pipe (6) is connected with water feed apparatus (9), discharging device (10), and water feed apparatus (9), discharging device (10) are symmetricly set on current deflecting pipe (6) both sides; Described quartzy end cap (3), optical fiber (4), current deflecting pipe (6), pattern stripper (12) are arranged along the axial direction of metal cartridge (7);
Photoelectric detection system (5) is arranged between current deflecting pipe (6) and metal cartridge (7) surface; The lock shape structure that clamping snap close (8) is metal cartridge (7) outer surface; Metal optical cable joint (11) and metal cartridge (7) afterbody are threaded connection fixing; Described photoelectric detection system (5), water feed apparatus (9), clamping snap close (8), discharging device (10) are arranged along the radial direction of metal cartridge (7).
2. a kind of optical-fiber laser delivery with band light beam focus characteristics and power monitoring function according to claim 1, is characterized in that: quartzy end cap (3) is connected by welding mode with optical fiber (4).
3. a kind of optical-fiber laser delivery with band light beam focus characteristics and power monitoring function according to claim 1, it is characterized in that: when myriawatt class large power laser is by this Laser output head, first, pattern stripper (12) divests laser and the remnant pump light of forward transmission in covering, meanwhile, the forward photo-detector in photoelectric detection system (5) detects the scattered light power separated; Then, laser is by quartzy end cap (3) outgoing, and due to the increase of exit end area, emergent light power density significantly reduces, and effectively prevent the damage of end face, adds the stability of a system; The laser exported by quartzy end cap (3) is focused lens (1) subsequently and focuses on, and spot size is controlled by focal length adjustment device (2); In addition, when utilizing described laser head to carry out laser processing, the power of the reflected light of generation is recorded by the backlight detector in photoelectric detection system (5); Finally, a large amount of heat produced during cooling device band walking modes stripper (12) work be made up of current deflecting pipe (6), water feed apparatus (9) and discharging device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316146.1A CN104882770A (en) | 2015-06-10 | 2015-06-10 | Fiber laser output head having light beam focusing characteristic and power monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316146.1A CN104882770A (en) | 2015-06-10 | 2015-06-10 | Fiber laser output head having light beam focusing characteristic and power monitoring function |
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| CN104882770A true CN104882770A (en) | 2015-09-02 |
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| CN201510316146.1A Pending CN104882770A (en) | 2015-06-10 | 2015-06-10 | Fiber laser output head having light beam focusing characteristic and power monitoring function |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490158A (en) * | 2015-12-24 | 2016-04-13 | 北京工业大学 | Super-continuum spectrum optical fiber laser output apparatus and laser system |
| CN105527679A (en) * | 2015-12-29 | 2016-04-27 | 孟祥宇 | Fiber laser output head and manufacturing method thereof |
| CN105977778A (en) * | 2016-06-28 | 2016-09-28 | 南京先进激光技术研究院 | Fiber laser output head |
| CN107332100A (en) * | 2017-08-09 | 2017-11-07 | 光惠（上海）激光科技有限公司 | A kind of easily removable and washable laser export head of water-cooled that function is detected with output light path and light power |
| JP2017216395A (en) * | 2016-06-01 | 2017-12-07 | 新日鐵住金株式会社 | Abnormality detector of laser irradiation facility |
| CN107462323A (en) * | 2017-10-10 | 2017-12-12 | 南京先进激光技术研究院 | A kind of high-capacity optical fiber laser light echo monitors optical module |
| CN108889728A (en) * | 2018-07-25 | 2018-11-27 | 中国科学院半导体研究所 | A kind of laser cleaning uses, the optical fiber output end with return light monitoring function |
| CN110161628A (en) * | 2019-05-29 | 2019-08-23 | 广东国志激光技术有限公司 | Optical fiber transmission mechanism and liquid cooled module |
| CN110190495A (en) * | 2019-06-11 | 2019-08-30 | 深圳市创鑫激光股份有限公司 | The high power single fiber of closed-loop control exports continuous full-optical-fiber laser system |
| CN110323654A (en) * | 2018-03-31 | 2019-10-11 | 深圳市创鑫激光股份有限公司 | Laser export head and laser |
| CN110429461A (en) * | 2019-07-17 | 2019-11-08 | 深圳大学 | A kind of dual wavelength pumping er-doped fluoride optical fiber laser and laser generation method |
| CN112162371A (en) * | 2020-09-25 | 2021-01-01 | 武汉锐科光纤激光技术股份有限公司 | Laser energy transmission optical cable |
| CN113319422A (en) * | 2020-02-28 | 2021-08-31 | 苏州创鑫激光科技有限公司 | Laser output head, laser processing head and laser processing equipment |
| CN115993691A (en) * | 2023-03-23 | 2023-04-21 | 武汉锐科光纤激光技术股份有限公司 | Optical path coupling system and control method thereof |
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| US4997250A (en) * | 1989-11-17 | 1991-03-05 | General Electric Company | Fiber output coupler with beam shaping optics for laser materials processing system |
| JP2015506111A (en) * | 2011-12-19 | 2015-02-26 | アイピージー フォトニクス コーポレーション | High power fiber laser system with distributed mode absorber |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490158A (en) * | 2015-12-24 | 2016-04-13 | 北京工业大学 | Super-continuum spectrum optical fiber laser output apparatus and laser system |
| CN105527679A (en) * | 2015-12-29 | 2016-04-27 | 孟祥宇 | Fiber laser output head and manufacturing method thereof |
| CN105527679B (en) * | 2015-12-29 | 2017-11-28 | 孟祥宇 | A kind of optical-fiber laser export head and its manufacture method |
| JP2017216395A (en) * | 2016-06-01 | 2017-12-07 | 新日鐵住金株式会社 | Abnormality detector of laser irradiation facility |
| CN105977778A (en) * | 2016-06-28 | 2016-09-28 | 南京先进激光技术研究院 | Fiber laser output head |
| CN107332100A (en) * | 2017-08-09 | 2017-11-07 | 光惠（上海）激光科技有限公司 | A kind of easily removable and washable laser export head of water-cooled that function is detected with output light path and light power |
| CN107332100B (en) * | 2017-08-09 | 2023-08-01 | 光惠（上海）激光科技有限公司 | Water-cooled easy-to-disassemble and-wash laser output head with output light path and light output power detection function |
| CN107462323A (en) * | 2017-10-10 | 2017-12-12 | 南京先进激光技术研究院 | A kind of high-capacity optical fiber laser light echo monitors optical module |
| CN110323654A (en) * | 2018-03-31 | 2019-10-11 | 深圳市创鑫激光股份有限公司 | Laser export head and laser |
| CN110323654B (en) * | 2018-03-31 | 2021-05-18 | 深圳市创鑫激光股份有限公司 | Laser output head and laser |
| CN108889728B (en) * | 2018-07-25 | 2021-02-12 | 中国科学院半导体研究所 | Optical fiber output end with return light monitoring function for laser cleaning |
| CN108889728A (en) * | 2018-07-25 | 2018-11-27 | 中国科学院半导体研究所 | A kind of laser cleaning uses, the optical fiber output end with return light monitoring function |
| CN110161628A (en) * | 2019-05-29 | 2019-08-23 | 广东国志激光技术有限公司 | Optical fiber transmission mechanism and liquid cooled module |
| CN110190495A (en) * | 2019-06-11 | 2019-08-30 | 深圳市创鑫激光股份有限公司 | The high power single fiber of closed-loop control exports continuous full-optical-fiber laser system |
| WO2020248929A1 (en) * | 2019-06-11 | 2020-12-17 | 苏州创鑫激光科技有限公司 | Closed-loop control high-power single-fiber output continuous all-fiber laser system |
| CN110429461A (en) * | 2019-07-17 | 2019-11-08 | 深圳大学 | A kind of dual wavelength pumping er-doped fluoride optical fiber laser and laser generation method |
| CN113319422A (en) * | 2020-02-28 | 2021-08-31 | 苏州创鑫激光科技有限公司 | Laser output head, laser processing head and laser processing equipment |
| CN113319422B (en) * | 2020-02-28 | 2024-01-30 | 苏州创鑫激光科技有限公司 | Laser output head, laser processing head, and laser processing apparatus |
| CN112162371A (en) * | 2020-09-25 | 2021-01-01 | 武汉锐科光纤激光技术股份有限公司 | Laser energy transmission optical cable |
| CN115993691A (en) * | 2023-03-23 | 2023-04-21 | 武汉锐科光纤激光技术股份有限公司 | Optical path coupling system and control method thereof |
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Application publication date: 20150902 |
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