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Mo0.5W0.5S2 for Q-switched pulse generation in ytterbium-doped fiber laser
Junli Wang1, Lei Chen1, Chenxi Dou1
1School of Physics and Optoelectronic Engineering, Xidian University, Xi'an, People's Republic of China.
Abstract:
In this work, we fabricate the Mo0.5W0.5S2 by microwave-assisted solvothermal method, and report the Q-switched Yb-doped fiber lasers (YDFL) using Mo0.5W0.5S2 polymer film and tapered fiber as the saturable absorbers (SAs). The modulation depth and saturable intensity of the film SA are 5.63% and 6.82 MW cm-2. The shortest pulse duration and the maximum single pulse energy are 1.22 μs and 148.8 nJ for the film SA, 1.46 μs and 339 nJ for the fiber-taper SA. To the best of our knowledge, this is the first report on the Q-switched YDFL using Mo0.5W0.5S2 SAs.
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