title: Dual-wavelength synchronously Q-switched solid-state laser with multi-layered graphene as saturable absorber.
abstract: Using multilayered graphene as the saturable absorber (SA), Nd:LYSO crystal as the laser material, we demonstrated a laser-diode (LD) pumped, dual-wavelength passively Q-switched solid-state laser. The maximum average output power is 1.8 W, the largest pulse energy and highest peak power is 11.3 μJ, 118 W, respectively. As we have known, they are the best results for passively Q-switched operation of graphene. The pulse laser is strong enough to realize extra-cavity frequency conversions. With a KTP crystal as the sum-frequency generator, the dual wavelengths are proved to be well time overlapped, which manifests the synchronous modulation to the dual-wavelength with multi-layered graphene.
authors.affiliation: State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China.
authors.forename: Yongguang
authors.initials: Y
authors.lastname: Zhao
authors.forename: Xianlei
authors.initials: X
authors.lastname: Li
authors.forename: Miaomiao
authors.initials: M
authors.lastname: Xu
authors.forename: Haohai
authors.initials: H
authors.lastname: Yu
authors.forename: Yongzhong
authors.initials: Y
authors.lastname: Wu
authors.forename: Zhengping
authors.initials: Z
authors.lastname: Wang
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Hao
authors.forename: Xinguang
authors.initials: X
authors.lastname: Xu
mesh_terms: D000042:Absorption; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D054023:Lasers, Semiconductor; D008027:Light
chemical_list: D006108:Graphite