title: Graphene Q-switched Ho(3+)-doped ZBLAN fiber laser at 1190  nm.
abstract: We report Q-switched pulse operation of holmium (Ho(3+))-doped ZrF(4)-BaF(2)-LaF(3)-AlF(3)-NaF (ZBLAN) at ∼1190  nm in an all-fiber ring laser by using a fiber-optic graphene saturable absorber, which was fabricated by depositing graphene onto the flat surface of a side-polished D-shaped fiber. Stable Q-switched operation was established at a pump power of 180 mW with a repetition rate of 24 kHz and pulse width of 5.7 μs. When the pump power was increased to 1125 mW, 0.44 μJ Q-switched pulses with a repetition rate of 111 kHz and a pulse width of 0.8 μs were generated.
authors: Shujing
authors: S
authors: Liu
authors: Xiushan
authors: X
authors: Zhu
authors: Gongwen
authors: G
authors: Zhu
authors: Kaushik
authors: K
authors: Balakrishnan
authors: Jie
authors: J
authors: Zong
authors: Kort
authors: K
authors: Wiersma
authors: Arturo
authors: A
authors: Chavez-Pirson
authors: R A
authors: RA
authors: Norwood
authors: N
authors: N
authors: Peyghambarian
mesh_terms: D006108:Graphite; D006695:Holmium / Q000737:chemistry*; D007834:Lasers; D019216:Metals, Heavy / Q000737:chemistry*; D055100:Optical Fibers
chemical_list: D019216:Metals, Heavy; D006108:Graphite; D006695:Holmium