发明名称 |
OPTICAL FIBER LASER DEVICE |
摘要 |
An optical fiber laser device generates laser light by using an optical amplifying fiber as an amplification medium in a laser oscillator and includes: an optical outputting fiber configured to emit laser light to an outside; a return-light-attenuating portion configured to perform an attenuation process to return light propagating through at least the optical outputting fiber in a reverse direction of the laser light; a thermal conversion unit provided at the return-light-attenuating portion and configured to convert the return light into heat; a temperature-monitoring device configured to measure an increase in a temperature, of the return-light-attenuating portion, caused by the heat converted by the thermal conversion unit; and a control unit configured to decrease or stop an output of the laser light when the temperature measured by the temperature-monitoring device becomes a predetermined threshold temperature or higher. |
申请公布号 |
US2017110847(A1) |
申请公布日期 |
2017.04.20 |
申请号 |
US201615393709 |
申请日期 |
2016.12.29 |
申请人 |
FURUKAWA ELECTRIC CO., LTD. |
发明人 |
KAJIWARA Koji;TAKAGI Takeshi;KASHIWAGI Kousuke;HYUGA Kazuaki;EMORI Yoshihiro |
分类号 |
H01S3/13;H01S3/067 |
主分类号 |
H01S3/13 |
代理机构 |
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代理人 |
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主权项 |
1. An optical fiber laser device for generating laser light by using an optical amplifying fiber as an amplification medium in a laser oscillator, the optical fiber laser device comprising:
an optical outputting fiber configured to emit laser light to an outside; a return-light-attenuating portion configured to attenuate return light propagating through at least the optical outputting fiber in a reverse direction of the laser light; a thermal conversion unit provided at the return-light-attenuating portion and configured to convert the return light into heat; a temperature-monitoring device configured to measure an increase in a temperature, of the return-light-attenuating portion, caused by the heat converted by the thermal conversion unit; and a control unit configured to decrease or stop an output of the laser light when the temperature measured by the temperature-monitoring device becomes a predetermined threshold temperature or higher. |
地址 |
Tokyo JP |