中国激光, 2011, 38 (8): 0802001, 网络出版: 2011-07-19
基于石墨烯可饱和吸收体的被动锁模、被动调Q掺镱光纤激光器 下载: 1057次
Passively Mode-Locked and Q-Switched Yb-Doped Fiber Lasers with Graphene-Based Saturable Absorber
激光器 光纤激光器 高脉冲能量 石墨烯 锁模 被动调Q lasers fiber lasers high pulse energy graphene mode-locked passively Q-switched
摘要
报道了石墨烯材料作为可饱和吸收体的被动锁模、被动调Q掺镱全光纤激光器。采用环形腔结构,在抽运功率为1.2 W时,有稳定的重复频率为1.04 MHz的自锁模脉冲发生,平均输出功率为46 mW;当抽运功率增加到2.3 W 时,平均输出功率为170 mW,相应的单脉冲能量高达163 nJ,脉冲宽度约为680 ps。采用线形腔结构,实现了石墨烯被动调Q激光脉冲输出,其重复频率在140~257 kHz可调,最窄激光脉冲宽度为70 ns,最大平均功率为12 mW,相应最大单脉冲能量为46 nJ。
Abstract
A graphene-based passively mode-locked and passively Q-switched Yb-doped fiber laser is reported. Stable mode-locked pulse train occurres at about 1.2 W incident pump power and the pulse repetition rate is 1.04 MHz in a ring cavity configuration; increasing the incident pump power to 2.3 W, the pulse width is measured to be about 680 ps and the output power is 170 mW, which corresponds to single pulse energy of 163 nJ. Graphene-based passively Q-switched operation is also demonstrated with pulse width of 70 ns and maximum output power of 12 mW in a linear cavity configuration, which corresponds to single pulse energy of 46 nJ. The repetition rate is tunable from 140 to 257 kHz along with the increase of the pump power.
刘江, 吴思达, 王科, 曹镱, 杨全红, 王璞. 基于石墨烯可饱和吸收体的被动锁模、被动调Q掺镱光纤激光器[J]. 中国激光, 2011, 38(8): 0802001. Liu Jiang, Wu Sida, Wang Ke, Cao Yi, Yang Quanhong, Wang Pu. Passively Mode-Locked and Q-Switched Yb-Doped Fiber Lasers with Graphene-Based Saturable Absorber[J]. Chinese Journal of Lasers, 2011, 38(8): 0802001.