title: Large energy laser pulses with high repetition rate by graphene Q-switched solid-state laser.
abstract: 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:GdVO(4) laser. The maximum pulse energy is 3.2 μJ. The slope efficiency is as high as 37% approximating to 40% of the continue-wave laser, indicating a low intrinsic loss of the graphene.
authors.affiliation: State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
authors.forename: Xian-lei
authors.initials: XL
authors.lastname: Li
authors.forename: Jin-long
authors.initials: JL
authors.lastname: Xu
authors.forename: Yong-zhong
authors.initials: YZ
authors.lastname: Wu
authors.forename: Jing-liang
authors.initials: JL
authors.lastname: He
authors.forename: Xiao-peng
authors.initials: XP
authors.lastname: Hao