ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Passively Q-switched dual-wavelength Yb:LSO laser based on tungsten disulphide saturable absorber |
Jing-Hui Liu(刘京徽)1, Jin-Rong Tian(田金荣)1, He-Yang Guoyu(郭于鹤洋)1, Run-Qin Xu(徐润亲)1, Ke-Xuan Li(李克轩)1, Yan-Rong Song(宋晏蓉)1, Xin-Ping Zhang(张新平)1, Liang-Bi Su(苏良碧)2, Jun Xu(徐军)2 |
1. College of Applied Sciences, Beijing University of Technology, Beijing 100124, China;
2. Key Laboratory of Transparent and Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China |
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Abstract We demonstrate a passively Q-switched Yb:LSO laser based on tungsten disulphide (WS2) saturable absorber operating at 1034 nm and 1056 nm simultaneously. The saturable absorbers were fabricated by spin coating method. With low speed, the WS2 nanoplatelets embedded in polyvinyl alcohol could be coated on a BK7 glass substrate coated with high-refractive-index thin polymer. The shortest pulse width of 1.6 μs with a repetition rate of 76.9 kHz is obtained. As the pump power increases to 9 W, the maximum output power is measured to be 250 mW, corresponding to a single pulse energy of 3.25 μJ. To the best of our knowledge, this is the first time to obtain dual-wavelength Q-switched solid-state laser using few-layer WS2 nanoplatelets.
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Received: 04 November 2015
Revised: 08 December 2015
Accepted manuscript online:
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PACS:
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42.60.Gd
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(Q-switching)
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42.70.Hj
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(Laser materials)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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42.60.Lh
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(Efficiency, stability, gain, and other operational parameters)
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Fund: Project supported by the National Scientific Research Project of China (Grant No. 61177047), Beijing Municipal Natural Science Foundation, China (Grant No. 1102005), and the Basic Research Foundation of Beijing University of Technology, China (Grant No. X3006111201501). |
Corresponding Authors:
Jin-Rong Tian, Yan-Rong Song
E-mail: jrtian@bjut.edu.cn;yrsong@bjut.edu.cn
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Cite this article:
Jing-Hui Liu(刘京徽), Jin-Rong Tian(田金荣), He-Yang Guoyu(郭于鹤洋), Run-Qin Xu(徐润亲), Ke-Xuan Li(李克轩), Yan-Rong Song(宋晏蓉), Xin-Ping Zhang(张新平), Liang-Bi Su(苏良碧), Jun Xu(徐军) Passively Q-switched dual-wavelength Yb:LSO laser based on tungsten disulphide saturable absorber 2016 Chin. Phys. B 25 034207
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