CN1235075C - Optical fiber head arrangement for large power laser coupling and cooling method for optical fiber head - Google Patents
Optical fiber head arrangement for large power laser coupling and cooling method for optical fiber head Download PDFInfo
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- CN1235075C CN1235075C CN 03103772 CN03103772A CN1235075C CN 1235075 C CN1235075 C CN 1235075C CN 03103772 CN03103772 CN 03103772 CN 03103772 A CN03103772 A CN 03103772A CN 1235075 C CN1235075 C CN 1235075C
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Abstract
The present invention relates to an optical fiber head structure for high-power laser coupling, which comprises a main body, a front end plug, a rear end plug, an optical fiber head fixing ring and two water faucets, wherein the main body comprises a major diameter end and a minor diameter end. The end part of the minor diameter end is provided with threads, and the middle is provided with a center through hole so as to accommodate an optical fiber; both sides of the center through hole are provided with two through holes which are passages of cooling water. Two water holes are arranged on the major diameter end; the two water holes are respectively communicated with the through holes. The front end plug and the rear end plug have the same structure; the center of the front end plug is provided with a through hole; both sides of the through hole are provided with two grooves corresponding to the two through holes on the main body. The front end plug and the rear end plug are respectively welded at both ends of the main body; the two through holes are communicated by the two grooves. The middle of the optical fiber head fixing ring is provided with a circular hole; the diameter of the circular hole is slightly greater than the diameter of the minor diameter end of the main body; the optical fiber head fixing ring is sheathed on the minor diameter end of the main body so as to fix an optical fiber head. The two water faucets are welded on the water holes on the major diameter end of the main body.
Description
Technical field
The invention provides a kind of optical fiber head structure and optical fiber head cooling means, be meant a kind of high-power laser coupling optical fiber head structure and optical fiber head cooling means of being used for especially.
Background technology
At aspects such as medical treatment, pumping, materials processing and processing, need very big laser fiber coupling output power, when this high power laser is exported by optical fiber, sometimes be simple optical fiber output, sometimes in order to increase optical fiber coupling output power, realize the optical fiber coupling output of high power laser linear array with optical-fiber bundle array.In the coupling of high power laser optical fiber, no matter be simple optical fiber output or multifiber output, between fixing, the multifiber of simple optical fiber and optical fiber head and the method the most widely of the fixedly employing of multifiber and optical fiber head be single or multifiber to be bonded in the optical fiber head with optical cement (normally 353ND), then to optical fiber head grind, PROCESS FOR TREATMENT such as polishing.Using this laser delivery single or that multifiber is bonded in the optical fiber head has a very large shortcoming, and promptly optical fiber head very easily burns.This is because the power density of the fiber end face of conduction and high power laser is very high usually, if optical fiber head treatment process defectiveness, light output end injustice single, especially multifiber, cut is more or the surperficial dust etc. that is stained with, the capital makes the optical fiber head local temperature very high, and it is very poor usually to be used for the optical cement thermal conductivity such as 353ND of bonding optical fiber.Therefore, in high power laser optical fiber coupling, usually because the optical fiber head local temperature is very high, and heat can not in time shed, and causes the optical cement charing of bonding optical fiber; Volatilize the material of similar oily after the optical cement charing, attached to fiber end face, the fiber end face temperature is further raise, and the rising of fiber end face temperature has caused the charing volatilization of optical fiber depths on first watch optical cement again, and such vicious cycle will soon make optical fiber head burn.
Summary of the invention
The objective of the invention is to, a kind of high-power laser coupling optical fiber head structure and optical fiber head cooling means of being used for is provided, it can solve the problem that fiber output head easily burns in the coupling of high power laser optical fiber.
A kind of high-power laser coupling optical fiber head structure that is used for of the present invention is characterized in that, comprising:
One main body, this main body is divided into a bigger diameter end and miner diameter end, there is screw thread end at miner diameter end, there is central through hole the centre so that optical fiber is ccontaining, both sides at central through hole have two through hole, this two through hole is the passage of chilled water, has two water holes on bigger diameter end, and these two water holes are communicated with through hole respectively;
Plug, a back plug before one, this front and back plug structure is identical; Should before the center of plug one through hole is arranged, the both sides of through hole have two with main body on the two through hole corresponding groove, this front and back plug is welded on the two ends of main body respectively, this two groove is that two through hole is communicated with;
One optical fiber head set collar, there is a circular hole centre of this optical fiber head set collar, and the slightly larger in diameter of this circular hole is in the diameter of the miner diameter end of main body, and this optical fiber head Fixing shrink ring is on the miner diameter end of main body, so that the fixed fiber head;
Two water nozzles are welded on the water hole on the bigger diameter end of main body.
Wherein the two through hole of the both sides of the center pit of this main body is a connectivity structure, and chilled water forms the loop in optical fiber head, and optical fiber head is cooled off.
Wherein the periphery of this an optical fiber head set collar part is a knurling, and a part is a sexangle, with manually convenient and instrument turn.
A kind of high-power laser coupling optical fiber head cooling means that is used for of the present invention is characterized in that, comprises the steps:
With single or multifiber metallization;
Optical fiber after the metallization is welded in the central through hole of optical fiber head structure, and chilled water forms the loop in optical fiber head, optical fiber head is cooled off.
Wherein optical fiber head adopts water-cooling structure.
Description of drawings
For further specifying technology contents of the present invention, be described in detail as follows below in conjunction with embodiment and accompanying drawing, wherein:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of main body 1 among Fig. 1;
Fig. 3 is the structural representation of preceding plug among Fig. 1;
Fig. 4 is the structural representation of back plug among Fig. 1;
Fig. 5 is the structural representation of optical fiber head set collar among Fig. 1;
Fig. 6 is the structural representation of water nozzle among Fig. 1.
Embodiment
At first see also Fig. 1 and Fig. 2, the present invention is a kind of high-power laser coupling optical fiber head structure that is used for, comprising: a main body 1, this main body 1 is divided into a bigger diameter end 11 and miner diameter end 12, in the end of miner diameter end screw thread 13 is arranged, there is central through hole 14 centre so that optical fiber is ccontaining, have two through hole 15,16 in the both sides of central through hole 14, this two through hole the 15, the 16th, the passage of chilled water, on bigger diameter end 11, have two water holes 17, these 17 in two water holes are to be communicated with through hole 15, and another is to be communicated with through hole 16;
See also Fig. 1 Fig. 3 and Fig. 4, a preceding plug 2, a back plug 3, these front and back plug 2,3 structures are identical; Should before the center of plug 2 through hole 21 is arranged, the both sides of through hole 21 have two with main body 1 on two through hole 15,16 corresponding groove 22, this front and back plug 2,3 is welded on the two ends of main body 1 respectively, this two groove 22 is with two through hole 15,16 connections;
Please consult Fig. 1 and Fig. 5 again, one optical fiber head set collar 4, the centre of this optical fiber head set collar 4 have a circular hole 41, and the slightly larger in diameter of this circular hole 41 is in the diameter of the miner diameter end 12 of main body 1, this optical fiber head set collar 4 is enclosed within on the miner diameter end 12 of main body 1, so that the fixed fiber head;
Other sees also Fig. 1 and Fig. 6, and two water nozzles 5 are welded on the water hole 17 on the bigger diameter end 11 of main body 1; Wherein the periphery of this optical fiber head set collar 4 part is a knurling, and a part is a sexangle, with manually convenient and instrument turn.
A kind of high-power laser coupling optical fiber head cooling means that is used for of the present invention comprises the steps:
With single or multifiber metallization;
Optical fiber after the metallization is welded in the central through hole 14 of optical fiber head structure.Wherein optical fiber head adopts water-cooling structure.
The present invention compared with prior art has following advantage:
The present invention is a kind of optical fiber head structure for high-power laser coupling and optical fiber head cooling side Method. In the coupling fiber of high power laser and traditional coupling fiber Laser output optical fiber Head is compared, and the present invention has very big advantage. Common used coupling fiber Laser output optical fiber Head is with the 353ND optical cement or other concentration is rarer, solidify after particle very little, can and light The glue of a fine simultaneous grinding and polishing is adhesively fixed on single or multifiber in the optical fiber head, this Kind of structure in the coupling fiber of high power laser, in optical fiber head output beam part because laser Beam power density is very high, is easy to make the optical fiber head local temperature very high, simultaneously, bonding fiber is existed The optical cement thermal conductivity such as the 353ND in the optical fiber head are very poor, therefore, cause the optics of bonding optical fiber The glue charing; Volatilize the material of similar oily after the optical cement charing, be attached to fiber end face, make light Fine end face temperature further raises, and the rising of fiber end face temperature has caused again optical fiber depths on first watch light Learn the charing volatilization of glue, such vicious circle will soon make optical fiber head burn. Therefore, this Be welded on the high power laser coupling fiber water flowing optical fiber head of water-cooled after the bright employing optical fiber metallization In, because the scolder that adopts is brazing metal, the common used optical cement tools such as 353ND Better thermal conductivity is arranged, and simultaneously, optical fiber head is connected with cooling water, therefore, can effectively solve because The optical fiber head heat can not in time shed and the high-power laser coupling that causes in the high-power laser coupling The problem that middle optical fiber head easily burns.
Claims (5)
1. one kind is used for high-power laser coupling optical fiber head structure, it is characterized in that, comprising:
One main body, this main body is divided into a bigger diameter end and miner diameter end, there is screw thread end at miner diameter end, there is central through hole the centre so that optical fiber is ccontaining, both sides at central through hole have two through hole, this two through hole is the passage of chilled water, has two water holes on bigger diameter end, and these two water holes are communicated with through hole respectively;
Plug, a back plug before one, this front and back plug structure is identical; Should before the center of plug one through hole is arranged, the both sides of through hole have two with main body on the two through hole corresponding groove, this front and back plug is welded on the two ends of main body respectively, this two groove is that two through hole is communicated with;
One optical fiber head set collar, there is a circular hole centre of this optical fiber head set collar, and the slightly larger in diameter of this circular hole is in the diameter of the miner diameter end of main body, and this optical fiber head Fixing shrink ring is on the miner diameter end of main body, so that the fixed fiber head;
Two water nozzles are welded on the water hole on the bigger diameter end of main body.
2. a kind of high-power laser coupling optical fiber head structure that is used for as claimed in claim 1 is characterized in that wherein the two through hole of the both sides of the center pit of this main body is a connectivity structure, and chilled water forms the loop in optical fiber head, optical fiber head is cooled off.
3. a kind of high-power laser coupling optical fiber head structure that is used for as claimed in claim 2 is characterized in that, wherein the periphery of this an optical fiber head set collar part is a knurling, and a part is a sexangle, with manually convenient and instrument turn.
4. one kind is used for the high-power laser coupling optical fiber head cooling means, it is characterized in that, comprises the steps:
With single or multifiber metallization;
Optical fiber after the metallization is welded in the central through hole of optical fiber head structure, and chilled water forms the loop in optical fiber head, optical fiber head is cooled off.
5. the high-power laser coupling optical fiber head cooling means that is used for according to claim 4 is characterized in that, wherein optical fiber head adopts water-cooling structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103772 CN1235075C (en) | 2003-02-19 | 2003-02-19 | Optical fiber head arrangement for large power laser coupling and cooling method for optical fiber head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103772 CN1235075C (en) | 2003-02-19 | 2003-02-19 | Optical fiber head arrangement for large power laser coupling and cooling method for optical fiber head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1523384A CN1523384A (en) | 2004-08-25 |
| CN1235075C true CN1235075C (en) | 2006-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03103772 Expired - Fee Related CN1235075C (en) | 2003-02-19 | 2003-02-19 | Optical fiber head arrangement for large power laser coupling and cooling method for optical fiber head |
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| CN (1) | CN1235075C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309124C (en) * | 2004-12-09 | 2007-04-04 | 中国科学院上海光学精密机械研究所 | Cooling device for high power double clad optical fiber laser output end |
| CN100371749C (en) * | 2006-04-29 | 2008-02-27 | 北京交通大学 | Method for improving laser fiber end-face input power damage threshold |
| CN102902030B (en) * | 2011-07-29 | 2013-12-25 | 山西飞虹激光科技有限公司 | Energy transfer optical cable for high-power laser transmission |
| CN102902029B (en) * | 2011-07-29 | 2014-03-26 | 山西飞虹激光科技有限公司 | Energy transmission optical cable for middle-power and small-power laser transmission |
| CN103414094B (en) * | 2013-08-14 | 2016-08-10 | 江苏天元激光科技有限公司 | Optical receiver and optical receiving device thereof for optical fiber laser burin-in process process |
| CN105375244B (en) * | 2015-12-14 | 2018-10-23 | 中国工程物理研究院应用电子学研究所 | A kind of optical fiber refrigerating head suitable for high-power semiconductor laser fiber coupling module |
| CN106908399B (en) * | 2017-02-09 | 2020-02-14 | 中国航天空气动力技术研究院 | Multi-light-path optical measurement compression sheet for laminated arc heater |
| CN108306171A (en) * | 2018-03-04 | 2018-07-20 | 南京理工大学 | Optical fiber laser monitoring and protecting device and guard method |
| CN111399139B (en) * | 2020-03-31 | 2024-04-12 | 福建华科光电有限公司 | High-power optical fiber head and manufacturing method thereof |
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2003
- 2003-02-19 CN CN 03103772 patent/CN1235075C/en not_active Expired - Fee Related
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| CN1523384A (en) | 2004-08-25 |
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