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2.4-W Narrow-Linewidth Q-Switched \hbox {Tm}^{3+} -Doped Double-Clad Fiber Laser

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5 Author(s)
Qijie Huang$^{1}$Research Center of Space Laser Information Technology, Shanghai Institute of Optics and Fine Mechanics, University of Chinese Academy of Sciences, Shanghai, China ; Ting Yu ; Yameng Zheng ; Jifeng Zu
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A narrow-linewidth 793-nm diode-pumped Tm3+ -doped double-clad silica fiber laser operated at 2 μm and actively Q-switched with an acousto-optic modulator is reported. Using a fiber Bragg grating as an output coupler, approximately 0.1-nm linewidth at 1996.8-nm pulses is derived at 80-kHz repetition rate. The maximum average output power is above 2 W for 11.6-W absorbed pump power. Less than 150-ns pulse is obtained at the repetition rate of 30 kHz. The laser is a promising seed laser for amplification in a master oscillator power amplifier system.

Published in:

IEEE Photonics Journal  (Volume:5 ,  Issue: 2 )