Journal
OPTICS LETTERS
Volume 41, Issue 16, Pages 3783-3786Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.41.003783
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Funding
- National Natural Science Foundation of China (NSFC) [61378022, 61475088, 61475177]
- Open Foundation of State Key Laboratory of Crystal Material of Shandong University [KF1403]
- Independent Innovation Foundation of Shandong University, IIFSDU [2013HW013]
- Young Scholars Program of Shandong University [2015WLJH38]
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We prepared WS2 nanosheets by using the thermal decomposition method and demonstrated for the first time its nonlinear saturable absorption property at around 2 mu m. With the as-prepared WS2 nanosheets as saturable absorber (SA), a passively Q-switched Tm:LuAG laser was realized successfully, and 660 ns laser pulses with an average output power of 1.08 W and pulse peak power of 26 W at a repetition rate of 63 kHz were obtained for an incident pump power of 7 W. Our experimental results definitely demonstrate that WS2 could be a kind of promising SA for solid-state 2 mu m lasers. (C) 2016 Optical Society of America
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