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Appl. Sci. 2016, 6(5), 128; doi:10.3390/app6050128

A passively Q-switched Ho:YVO4 Laser at 2.05 μm with Graphene Saturable Absorber

National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China
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Author to whom correspondence should be addressed.
Academic Editor: Takayoshi Kobayashi
Received: 22 January 2016 / Accepted: 22 April 2016 / Published: 2 May 2016
(This article belongs to the Section Optics and Lasers)
View Full-Text   |   Download PDF [1781 KB, uploaded 2 May 2016]   |  

Abstract

We report a passively Q-switched Ho:YVO4 laser pumped at 1.94 µm with multilayer graphene as a saturable absorber. At the absorbed pump power of 9.3 W, the maximum average output power of 2.2 W was obtained in Ho:YVO4 laser with minimum pulse width of 265.2 ns and pulse repetition rate of 131.6 kHz at 2052.1 nm. In addition, a beam quality factor of M2~1.7 was measured at the maximum output level. This is, as far as we know, the first time that graphene has been used in a passively Q-switched Ho:YVO4 laser. View Full-Text
Keywords: solid-state laser; passively Q-switched 2-μm laser; Ho:YVO4; graphene solid-state laser; passively Q-switched 2-μm laser; Ho:YVO4; graphene
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lin, W.; Duan, X.; Cui, Z.; Yao, B.; Dai, T.; Li, X. A passively Q-switched Ho:YVO4 Laser at 2.05 μm with Graphene Saturable Absorber. Appl. Sci. 2016, 6, 128.

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