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Laser power monitoring device

A monitoring device and a technology for optical power detection, applied in the field of power devices, can solve problems such as mode instability, and achieve the effects of accurate power monitoring, reduction of stray light, and optimization of optical path structure

Inactive Publication Date: 2011-05-18
BEIJING NEWRAYSING LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, it is also hoped to provide a laser power monitoring device, which can solve the problem caused by the instability of the mode in laser detection, and the overall structure is simple

Method used

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Embodiment Construction

[0020] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0021] figure 1 The optical circuit diagram of the laser power detector according to the present invention is shown. As shown in the figure, the laser beam 2 is emitted from the laser exit surface 1 and first reaches the total reflection mirror 3 . The total reflection mirror 3 is coated on its entrance face with a reflective film 9 selected so that a major part of the laser beam 2 is reflected and only a small part is transmitted. Wherein, the reflected beam 4 is output to the laser equipment for normal operation, while the transmitted beam 5 is provided to the photodetection element 8 for power monitoring.

[0022] In one embodiment, the reflective film 9 is a s...

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Abstract

The invention provides a laser power monitoring device comprising a total reflection mirror for splitting beams for laser emitted from a laser source. The incidence plane of the total reflection mirror is coated with a proper reflecting film, most parts of incident beams are reflected to be used for normal operation, but a small quantity of incident beams are transmitted and guided to a power detection element for detecting the power. The laser power monitoring device preferably comprises a neutral adsorption-type attenuation sheet and a focusing lens, so that the monitoring result is more accurate, simultaneously a detection system is simplified, and the cost is lowered.

Description

technical field [0001] The invention relates to a laser power monitoring device, in particular to a device for real-time monitoring of the laser power emitted by a laser source. Background technique [0002] Laser refers to the radiation generated by stimulated emission of light amplification, which has many advantages such as good orientation, high brightness, and high energy density. Therefore, lasers are widely used in various industries such as processing and manufacturing, medicine, printing and other industries. In response to the work requirements of laser equipment in various fields, the power of the laser needs to be adjusted according to the specific situation during the application process, which requires the power of the laser to be monitored first. [0003] In the existing laser power monitoring device, a light beam splitter lens is used in the optical path structure, which is used to divide the laser light generated by the laser source into two paths, one path...

Claims

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Application Information

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IPC IPC(8): G01J1/00G01J1/04G01J1/42
Inventor 顾瑛胡明明朱惠贤贺慧铭薛平任逸维
Owner BEIJING NEWRAYSING LASER TECH
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