title: All-fiber Q-switched operation of thulium-doped silica fiber laser by piezoelectric microbending.
abstract: We demonstrate an all-fiber Q-switched laser operation in the 2 µm region on the basis of a dynamic periodic microbend and pulsed-pump configuration. A single-mode thulium-doped silica fiber is pumped by 1.6 µm-band laser diodes, and the dynamic loss is introduced in the fiber ring resonator by the periodic microbend that is electrically controlled with a piezoelectric actuator. When the voltage-off period of the piezoelectric actuator is set at 20 µs for the pump power of 120 mW, the output pulse power is measured by 420 mW with a pulse width of 1.3 µs.
authors.affiliation: Department of Electrical and Electronic Engineering, Faculty of Engineering, Shizuoka University, Naka-ku, Hamamatsu, Japan. thsakat@ipc.shizuoka.ac.jp
authors.forename: Hajime
authors.initials: H
authors.lastname: Sakata
authors.forename: Shungo
authors.initials: S
authors.lastname: Araki
authors.forename: Ryo
authors.initials: R
authors.lastname: Toyama
authors.forename: Masahiro
authors.initials: M
authors.lastname: Tomiki
mesh_terms: D004867:Equipment Design; D004864:Equipment and Supplies; D005336:Fiber Optic Technology; D007834:Lasers; D055100:Optical Fibers; D013932:Thulium / Q000737:chemistry*
chemical_list: D013932:Thulium