Optical Fiber Laser Scattered Light Detection Device and Laser Power Calibration and Feedback Method
A fiber laser, detection device technology, used in measurement devices, optical instrument testing, machine/structural component testing, etc.
Active Publication Date: 2021-09-21
HANS LASER TECH IND GRP CO LTD +2
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Problems solved by technology
[0004] Based on this, it is necessary to address the problem of attenuation or exceeding the limit value of the output power of the fiber laser, and provide an effective monitoring of the output power value of the fiber laser, so that the driving current of the fiber laser can be increased when the output power of the fiber laser is attenuated, or in the fiber laser A fiber laser scattered light detection device that turns off the fiber laser when the output power exceeds the limit value, and a laser power calibration and feedback method for monitoring by using the fiber laser scattered light detection device
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[0029] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.
[0030] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected ...
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The invention relates to a fiber laser scattered light detection device and a laser power calibration and feedback method. The fiber laser scattered light detection device includes: a fixture, which is hollow inside, and is covered on the output optical fiber; a photodetector is arranged in the fixture, and the photosensitive surface of the photodetector faces the output optical fiber; the cladding light The stripping device is arranged on the output optical fiber, is spaced from the clamp, and is used to prevent the cladding light from interfering with the monitoring signal of the photodetector. This fiber laser scattered light detection device can effectively monitor the output power value of the fiber laser, so as to increase the driving current of the fiber laser when the output power of the fiber laser is attenuated, or shut down the fiber laser when the output power of the fiber laser exceeds the limit.
Description
technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a fiber laser scattered light detection device and a laser power calibration and feedback method. Background technique [0002] Due to reasons such as the pump source of the LD semiconductor laser, the output power of high-power fiber lasers will attenuate as the use time increases. Moreover, in some extreme applications, the fiber will burn out inside the high-power laser. [0003] The attenuation of output power of high-power fiber laser will directly affect the application effect of cutting and welding, and if the fiber burns inside the high-power laser, but the driving current is not cut off in time, the safety and reliability of the laser will be greatly affected. Contents of the invention [0004] Based on this, it is necessary to address the problem of attenuation or exceeding the limit value of the output power of the fiber laser, and provide an effective monitori...
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IPC IPC(8): G01M11/02
CPCG01M11/00
Inventor 郭亚银马淑贞张周全战韩峰余地连祖焻陈焱高云峰
Owner HANS LASER TECH IND GRP CO LTD