中国激光, 2018, 45 (8): 0801009, 网络出版: 2018-08-11
光纤激光器外腔型光谱组束研究 下载: 1201次
External Cavity Spectral Beam Combining of Fiber Lasers
激光光学 激光组束 光谱组束 光纤激光器 外腔反馈 laser optics laser beam combining spectral beam combining fiber lasers external feedback
摘要
实验研究了两路光纤激光器外腔反馈型光谱组束(SBC),采用透射式衍射光栅作为组束元件,实现了1060 nm波长激光与1080 nm波长激光的光谱组束输出。输出光束组束方向光束质量为1.328,非组束方向光束质量为1.257,组束输出功率为57.3 W,光-光效率为91.7%。采用该组束方案可以降低单路激光器线宽的要求,同时验证了多路激光进行组束的可行性,通过增加组束光束个数可以进一步提高组束输出功率。
Abstract
External cavity feedback spectral beam combining (SBC) of two fiber lasers is investigated experimentally. A transmission grating is employed as the beam combining element and the SBC of a 1060 nm laser and a 1080 nm laser is achieved. The beam quality of 1.328 in SBC direction is obtained, while the beam quality in the other direction is 1.257. The output power of the SBC system is 57.3 W with a combining efficiency of 91.7%. Based on the configuration in this experiment, the requirement on the bandwidth of a single laser participating in the SBC can be significantly relieved. The experiment results verify the feasibility of multi-channel SBC. The SBC output power can be improved by the increase of the channels of the SBC system.
刘小溪, 王学锋, 王军龙, 朱占达, 郑也, 李磐. 光纤激光器外腔型光谱组束研究[J]. 中国激光, 2018, 45(8): 0801009. Liu Xiaoxi, Wang Xuefeng, Wang Junlong, Zhu Zhanda, Zheng Ye, Li Pan. External Cavity Spectral Beam Combining of Fiber Lasers[J]. Chinese Journal of Lasers, 2018, 45(8): 0801009.