CN206820238U - A kind of device monitored for optical fiber laser instruction soft exchange and return light - Google Patents
A kind of device monitored for optical fiber laser instruction soft exchange and return light Download PDFInfo
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- CN206820238U CN206820238U CN201720699863.1U CN201720699863U CN206820238U CN 206820238 U CN206820238 U CN 206820238U CN 201720699863 U CN201720699863 U CN 201720699863U CN 206820238 U CN206820238 U CN 206820238U
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- instruction
- optical fiber
- collimator
- laser
- dichroic mirror
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Abstract
The utility model provides a kind of for optical fiber laser instruction soft exchange and the device of return light monitoring; it can protection indicates radiant while will indicate soft exchange and cost is relatively low; return light can also be monitored prevents the excessive damage pump laser of return light; it includes dichroic mirror, first collimator, instruction radiant; the dichroic mirror is coated with the film that can pass through to laser total reflection, to instruction light close to the one side of first collimator; instruction radiant is placed in the non-coated surface side of the dichroic mirror, the light-coming out optical fiber of the instruction radiant carries the second collimater；Photodetector is set in dichroic mirror coated surface side, the photodetector electricly connects with Laser Control System.
Description
Technical field
The utility model is related to fiber laser technology field, be specially it is a kind of be used for optical fiber laser instruction soft exchange and
The device of return light monitoring.
Background technology
For convenience, laser is safely used, is necessary to add instruction light in black light laser, than more conventional
Method be by low-power visible light semiconductor laser access the one of single armed of bundling device, in order to prevent semiconductor laser
Photo damage is returned, isolator is also accessed before semiconductor laser, can so cause the increase of cost；In addition, in optical fiber
In the manufacturing process of laser, in order to obtain higher-wattage laser, it will usually closed pumping laser to a light using bundling device
In fibre, during optical fiber laser use, have fraction of laser light and reflected in output port, work piece surface or other positions
In recovering light path, although in pump laser still damage can be produced to pump laser added with antireflection lens when return light is larger
Wound, reduce the service life of pump laser.
Utility model content
Indicate that soft exchange cost is higher and optical fiber laser return light crosses conference damage pump for traditional fiber laser
The problem of Pu laser, the utility model provide a kind of for optical fiber laser instruction soft exchange and the dress of return light monitoring
Put, it can protection indicates radiant while will indicate soft exchange and cost is relatively low, moreover it is possible to which return light monitoring is prevented from returning
The excessive damage pump laser of light echo.
Its technical scheme is such：A kind of device monitored for optical fiber laser instruction soft exchange and return light, its
It is characterised by：It includes dichroic mirror, first collimator, instruction radiant, is provided with the optical fiber of the first collimator with closing beam
The input optical fibre welding of device, the dichroic mirror is coated with to laser total reflection, to instruction light close to the one side of first collimator to be led to
The film crossed, places instruction radiant in the non-coated surface side of the dichroic mirror, and the light-coming out optical fiber of the instruction radiant is with the
Two collimaters, the second collimater direction and first collimator are in opposite direction, and both horizontal directions stagger, and make by second
The visible ray of collimater processing is via can be coupled into first collimator after dichroic mirror；Light is additionally provided with dichroic mirror coated surface side
Electric explorer, after the photodetector is arranged in dichroic mirror described in the laser return light directive from first collimator out
The region that reflected light is concentrated, the photodetector electricly connect with Laser Control System.
Its further feature：The detectable wavelength of photodetector includes optical maser wavelength.
After such structure, instruction light is refracted into optical fiber laser by dichroic mirror, avoids installing isolator, has
While effect ground access instruction light, cost is reduced；When returning to luminous power and exceeding preset value optical fiber laser can be made to stop work
Make, effectively prevent and return to the excessive damage for causing pump laser of luminous power.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model；
Fig. 2 is the connection figure of the utility model and optical fiber laser.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in Figure 1 and Figure 2, a kind of for optical fiber laser instruction soft exchange and the device of return light monitoring, it includes two
Look mirror 3, first collimator 4, instruction radiant 1, are provided with the optical fiber of first collimator 4 and the input optical fibre welding of bundling device 8,
Dichroic mirror 3 is coated with the film that can pass through to laser total reflection, to instruction light close to the one side of first collimator 4, in the non-plated of dichroic mirror 3
Instruction radiant 1 is placed in film surface side, and the light-coming out optical fiber of instruction radiant 1 carries the second collimater 2, the direction of the second collimater 2
It is in opposite direction with first collimator 4, and both horizontal directions stagger, the visible ray for making to handle by the second collimater 2 is via two
First collimator 4 can be coupled into after Look mirror 3；Photodetector 5 is set in the coated surface side of dichroic mirror 3, photodetector 5 can be visited
Survey wavelength and include laser wavelength, photodetector 5 is arranged in the color of laser return light directive two from first collimator 4 out
The region that reflected light after mirror 3 is concentrated, as shown in figure 1, one of which arrangement form is：Dichroic mirror 3 is in 45 with first collimator 4
Degree is placed, and photodetector 5 is located at dichroic mirror 3 with film in 45 degree of placements, photodetector 5 with dichroic mirror 3 with first collimator 4
Side is in 90 degree of arrangements；Photodetector 5 electricly connects with Laser Control System 6.
In use, an optical fiber in optical fiber laser in the input optical fibre of bundling device 8 is picked out, the optical fiber and first is accurate
Straight device 4 is connected, and the instruction light that instruction radiant 1 exports is collimated by the second collimater 2, and first is refracted into by dichroic mirror 3
Collimater 4 so that optical fiber laser increases visible ray because dichroic mirror 3 can fully reflective return light so as to avoiding installing
Isolator, reduce cost；Return light is reflected into photodetector 5, photodetection by first collimator 4 by dichroic mirror 3
The data feedback measured to Laser Control System 6, is controlled optical fiber laser if value of feedback exceedes predetermined value, incited somebody to action by device 5
It is stopped, and effectively prevent and returns to the excessive damage for causing pump laser 7 of luminous power.
More than, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not limited to
In this, any people for being familiar with the technology is in the technical scope disclosed by the utility model, the change or replacement that can readily occur in,
It should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with claim
Protection domain is defined.
Claims (2)
- It is 1. a kind of for optical fiber laser instruction soft exchange and the device of return light monitoring, it is characterised in that：It include dichroic mirror, First collimator, instruction radiant, are provided with the input optical fibre welding of the optical fiber and bundling device of the first collimator, and described two Look mirror is coated with the film that can pass through to laser total reflection, to instruction light close to the one side of first collimator, in the dichroic mirror non-plated Instruction radiant is placed in film surface side, and the light-coming out optical fiber of the instruction radiant carries the second collimater, second collimater Direction is in opposite direction with first collimator, and both horizontal directions stagger, make by the visible ray that the second collimater is handled via First collimator can be coupled into after dichroic mirror；Photodetector, the photodetection are additionally provided with dichroic mirror coated surface side Device is arranged in from first collimator the region that the reflected light after dichroic mirror described in laser return light directive out is concentrated, described Photodetector electricly connects with Laser Control System.
- 2. according to claim 1 a kind of for optical fiber laser instruction soft exchange and the device of return light monitoring, it is special Sign is：The detectable wavelength of photodetector includes optical maser wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720699863.1U CN206820238U (en) | 2017-06-16 | 2017-06-16 | A kind of device monitored for optical fiber laser instruction soft exchange and return light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720699863.1U CN206820238U (en) | 2017-06-16 | 2017-06-16 | A kind of device monitored for optical fiber laser instruction soft exchange and return light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206820238U true CN206820238U (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720699863.1U Active CN206820238U (en) | 2017-06-16 | 2017-06-16 | A kind of device monitored for optical fiber laser instruction soft exchange and return light |
Country Status (1)
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| CN (1) | CN206820238U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108988122A (en) * | 2018-09-30 | 2018-12-11 | 无锡源清瑞光激光科技有限公司 | A kind of quasi-continuous semiconductor laser control system of QCW suitable for laser spot welding |
| CN109491017A (en) * | 2018-12-29 | 2019-03-19 | 昆山华辰光电科技有限公司 | The protection structure and guard method of visible light instruction |
| CN111129915A (en) * | 2019-12-23 | 2020-05-08 | 北京航天控制仪器研究所 | Anti-reflection system and method for optical fiber laser |
| CN111934191A (en) * | 2020-08-19 | 2020-11-13 | 苏州长光华芯光电技术有限公司 | Semiconductor laser coupling structure |
| WO2022001061A1 (en) * | 2020-07-01 | 2022-01-06 | 苏州创鑫激光科技有限公司 | Laser |
| CN114284841A (en) * | 2021-12-29 | 2022-04-05 | 武汉锐科光纤激光技术股份有限公司 | Optical fiber laser and control method thereof |
-
2017
- 2017-06-16 CN CN201720699863.1U patent/CN206820238U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN108988122A (en) * | 2018-09-30 | 2018-12-11 | 无锡源清瑞光激光科技有限公司 | A kind of quasi-continuous semiconductor laser control system of QCW suitable for laser spot welding |
| CN109491017A (en) * | 2018-12-29 | 2019-03-19 | 昆山华辰光电科技有限公司 | The protection structure and guard method of visible light instruction |
| CN111129915A (en) * | 2019-12-23 | 2020-05-08 | 北京航天控制仪器研究所 | Anti-reflection system and method for optical fiber laser |
| WO2022001061A1 (en) * | 2020-07-01 | 2022-01-06 | 苏州创鑫激光科技有限公司 | Laser |
| CN111934191A (en) * | 2020-08-19 | 2020-11-13 | 苏州长光华芯光电技术有限公司 | Semiconductor laser coupling structure |
| CN114284841A (en) * | 2021-12-29 | 2022-04-05 | 武汉锐科光纤激光技术股份有限公司 | Optical fiber laser and control method thereof |
| CN114284841B (en) * | 2021-12-29 | 2023-10-20 | 武汉锐科光纤激光技术股份有限公司 | Optical fiber laser and control method thereof |
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