Zhang Hanwei, Xiao Hu, Zhou Pu, Wang Xiaolin, Xu Xiaojun
Appl Opt. 2013 Nov 20;52(33):8008-12. doi: 10.1364/AO.52.008008.
A monolithic, hybrid-pumped, gain-switched, single-mode, 1120 nm Yb-doped fiber laser is reported. Pumped by a 1064 nm pulse fiber source and a continuous-wave 976 nm laser diode, a record output pulse energy of 91.7 μJ at repetition rate of 10 kHz is obtained. The full width at half-maximum of the pulses is 4.1 μs, and the slope efficiency corresponding to the 1064 nm laser is more than 46%. The pulse build-up time and a pulsewidth decrease with an increase in the pump pulse energy are observed. In the gain-switched pulses, mode-lock-resembling pulses are detected. The subpulse's duration is about 415 ns, including the cavity round-trip time, and the width varied from 80 to 320 ns, which is longer than the traditional mode-locked laser.
报道了一种单片、混合泵浦、增益开关、单模、1120纳米掺镱光纤激光器。由一个1064纳米脉冲光纤源和一个连续波976纳米激光二极管泵浦，在10千赫兹的重复频率下获得了创纪录的91.7微焦输出脉冲能量。脉冲的半高全宽为4.1微秒，对应于1064纳米激光的斜率效率超过46%。观察到脉冲建立时间和脉冲宽度随着泵浦脉冲能量的增加而减小。在增益开关脉冲中，检测到类似锁模的脉冲。子脉冲的持续时间约为415纳秒，包括腔往返时间，宽度在80到320纳秒之间变化，这比传统锁模激光器的宽度更长。
