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High Peak-Power Gain-Switched Tm ^{3+} -Doped Fiber Laser

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3 Author(s)
Yulong Tang ; Shanghai Inst. of Opt. & Fine Mech., Shanghai, China ; Feng Li ; Jianqiu Xu

Resonantly pumped by a 1.914-μm Q-switched Tm:YLF laser, high-peak-power stable laser pulse from gain-switched ~1.94-μm Tm3+-doped silica fiber lasers are reported for the first time. The slope efficiency was over 80% with respect to absorbed pump power, and chaotic spiking was effectively eliminated by using fast gain switching. With a 4-m Tm3+ fiber, pulse energy of 1.3 mJ and pulsewidth of 61 ns were obtained, corresponding to peak power of 21.3 kW.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 13 )