摘要
We report a single-frequency linearly polarized Q-switched fiber laser based on an Nb_(2)GeTe_(4)saturable absorber(SA).The Nb_(2)GeTe_(4)SA triggers passive Q-switching of the laser,and an un-pumped Yb-doped fiber together with a 0.08-nmbandwidth polarization-maintaining fiber Bragg grating(FBG)acts as an ultra-narrow bandwidth filter to realize singlelongitudinal-mode(SLM)oscillation.The devices used in the laser are all kept polarized,so as to ensure linearly polarized laser output.Stable SLM linearly polarized Q-switching operation at 1064.6 nm is successfully achieved,producing a laser with a shortest pulse width of 1.36μs,a linewidth of 28.4 MHz,a repetition rate of 28.3 kHz-95.9 kHz,and a polarization extinction ratio of about 30 dB.It is believed that the single-frequency linearly polarized pulsed fiber laser studied in this paper has great application value in gravitational wave detection,beam combining,nonlinear frequency conversion,and other fields.
作者
陈思雨
邓海芹
张万儒
戴永平
王涛
俞强
李灿
姜曼
粟荣涛
吴坚
周朴
Si-Yu Chen;Hai-Qin Deng;Wan-Ru Zhang;Yong-Ping Dai;Tao Wang;Qiang Yu;Can Li;Man Jiang;Rong-Tao Su;Jian Wu;Pu Zhou(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China;Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,China;CAS Key Laboratory of Nanophotonic Materials and Devices&Key Laboratory of Nanodevices and Applications,i-Lab,Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO),Chinese Academy of Sciences(CAS),Suzhou 215123,China)
基金
Project supported by the National Natural Science Foundation of China(Grant No.62275272)
the Training Program for Excellent Young Innovators of Changsha,China(Grant No.KQ2206003).
