Q-switched and mode-locked Er-doped fiber laser using PtSe2 as a saturable absorber  

作　　者：KANG ZHANG MING FENG YANGYANG REN FANG LIu XINGSHUO CHEN JIE YANG XIAO-QING VAN FENG SONG JIANGUO TIAN 

机构地区：[1]Key Laboratory of Weak-Light Nonlinear Photonics,Ministry of Education,School of Physics and TEDA Applied Physics School,Nankai University,Tianjin 300071,China

出　　处：《Photonics Research》2018年第9期893-899,共7页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(NSFC)(11174159,11304166,61405139,61475076);Natural Science Foundation of Tianjin City(14JCYBJC16400);International Cooperation Program sponsored by Ministry of Education of the People’s Republic of China(MOE);Chinese National Key Basic Research Special Fund(2011CB922003);National Science Fund for Talent Training in Basic Sciences(J1103208)

摘　　要：We report a passively Q-switched and mode-locked erbium-doped fiber laser(EDFL) based on PtSe_2, a new two-dimensional material, as a saturable absorber(SA). Self-started Q-switching at 1560 nm in the EDFL was achieved at a threshold pump power of 65 mW, and at the maximum pump power of 450 m W, the maximum single Q-switched pulse energy is 143.2 n J. Due to the polarization-dependent characteristics of the PtSe_2-based SA, the laser can be switched from the Q-switched state to the mode-locked state by adjusting the polarization state. A mode-locked pulse train with a repetition rate of 23.3 MHz and a pulse width of 1.02 ps can be generated when the pump power increases to about 80 m W, and the stable mode-locked state is maintained until the pump power reaches its maximum 450 m W. The maximum single mode-locked pulse energy is0.53 nJ. This is the first time to our knowledge that successful generation of stable Q-switched and mode-locked pulses in an Er-doped fiber laser has been obtained by using PtSe_2 as a saturable absorber.We report a passively Q-switched and mode-locked erbium-doped fiber laser （EDFL） based on PtSe2, a new two-dimensional material, as a saturable absorber （SA）. Self-started Q-switching at 1560 nm in the EDFL was achieved at a threshold pump power of 65 roW, and at the maximum pump power of 450 mW, the maximum single Q-switched pulse energy is 143.2 nJ. Due to the polarization-dependent characteristics of the PtSe2-based SA, the laser can be switched from the Q-switched state to the mode-locked state by adjusting the polarization state. A mode-locked pulse train with a repetition rate of 23.3 MHz and a pulse width of 1.02 ps can be generated when the pump power increases to about 80 roW, and the stable mode-locked state is maintained until the pump power reaches its maximum 450 mW. The maximum single mode-locked pulse energy is 0.53 nJ. This is the first time to our knowledge that successful generation of stable Q-switched and mode-locked pulses in an Er-doped fiber laser has been obtained by using PtSe2 as a saturable absorber. 2018 Chinese Laser Press

关 键 词：二维材 光纤激光器 通讯技术 发展现状 

分 类 号：TN248[电子电信—物理电子学] TN92