Acta Photonica Sinica, Volume. 42, Issue 1, 43(2013)
Gain Switched All-fiberized Pulse Yb Fiber Laser
A gain-switched Yb-doped pulse fiber laser which was periodically pumped by a pulsed Laser Diode (LD) centering at wavelength of 975 nm was reported. The pulsed Yb fiber laser was composed of a piece of Yb doped double cladding gain fiber and a pair of fiber Bragg gratings. Under pump power of 20 W and pulse duration of 2.4 μs at repetition rate of 50 kHz, stable laser pulse trains were obtained at 1 060 nm with pulse duration of 100 ns. The shot energy of every pulse was measured up to 20 μJ. Using this pulsed Yb fiber laser as the seed, a maser-oscillator power amplifier (MOPA) structured high power Yb laser was constructed with pulse energy exceeding 200 μJ. The slope efficiency of the MOPA was about 60%.
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SUN Hong, WEI Kai-hua, QIAN Kai, CHEN Tao, YANG Ding-zhong, JIANG Pei-pei, WU Bo, SHEN Yong-hang. Gain Switched All-fiberized Pulse Yb Fiber Laser[J]. Acta Photonica Sinica, 2013, 42(1): 43
Received: Aug. 7, 2012
Accepted: --
Published Online: Jan. 16, 2013
The Author Email: Hong SUN (21030048@zju.edu.cn)