光纤激光器辐照性能实验研究  

Experimental Study on Radiation Performance of Fiber Lasers

作　　者：池俊杰 姜诗琦 张琳[1] 于淼[1] 王军龙[1] Chi Junjie;Jiang Shiqi;Zhang Lin;Yu Miao;Wang Junlong(Beijing Aerospace Control Instrument Research Institute, Beijing 100094, China)

机构地区：[1]北京航天控制仪器研究所,北京100094

出　　处：《激光与光电子学进展》2018年第6期274-278,共5页Laser & Optoelectronics Progress

摘　　要：针对高功率光纤激光器的空间应用,采用976nm和915nm两种波段作为抽运源的光纤激光器进行辐照实验,采用的有源光纤均为20/400μm掺镱光纤,输出功率分别为32.68 W和32.04 W。辐照源为Co60源γ射线,总辐照剂量为12.4krad,辐照后976nm和915nm抽运光纤激光器输出功率分别降至20.09 W和5.63 W。研究结果表明,976nm抽运光纤激光器抗辐照性能优于915nm抽运光纤激光器。另外,采用无源器件,如光纤合束器和包层光剥离器进行辐照实验,结果发现辐照后光纤合束器耦合效率降低,包层光剥离器的剥离度增大,故辐照对无源器件也有影响。For the space applications of high-power fiber lasers, we experimentally investigate the radiation performance of fiber lasers in radiation environment. The two fiber lasers, pumped at different wavelengths of 976 nm and 915 nm , are used with a same kind of 20/400 μm Yb-doped gain fiber in the experiment. After 12.4- krad irradiation by the γ ray produced by Co^60 , the laser output powers of the 976-nm-pumped and 915-nm-pumped fiber lasers decay from 32.68 W and 32.04 W to 20.09 W and 5.63 W, respectively. The results show that the 976 nm-pumped fiber lasers are more radiation-resistant than the 915-nm-pumped fiber lasers. In addition, passive fiber devices, such as fiber combiners and cladding strippers, are used for irradiation experiments. After the irradiation, the coupling efficiency of fiber combiner is reduced, and the stripping degree of cladding stripper is increased. It is shown that irradiation has an effect on passive fiber devices.

关 键 词：激光器 光纤激光器 Γ射线 辐致损耗 光纤色心 

分 类 号：TN248[电子电信—物理电子学]