Journal
OPTICS EXPRESS
Volume 19, Issue 10, Pages 9950-9955Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.009950
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Funding
- National Natural Science Foundation of China [11074148, 50823009, 51021062]
- National Basic Research Program of China [2009CB930503]
- Chinese Ministry of Education [109096]
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We demonstrated that the graphene could be used as an effective saturable absorber for Q-switched solid-state lasers. A graphene saturable absorber mirror was fabricated with large and high-quality graphene sheets deprived from the liquid phase exfoliation. Using this mirror, 105-ns pulses and 2.3-W average output power are obtained from a passively Q-switched Nd:GdVO4 laser. The maximum pulse energy is 3.2 mu J. The slope efficiency is as high as 37% approximating to 40% of the continue-wave laser, indicating a low intrinsic loss of the graphene. (C) 2011 Optical Society of America
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