title: Efficient Q-switched Ho:GdVO₄ laser resonantly pumped at 1942 nm.
abstract: An efficient 2 μm room-temperature Q-switched Ho:GdVO4 laser end-pumped by a 1942 nm Tm-fiber laser is demonstrated. To our knowledge, this is the first report of Q-switched performance of Ho:GdVO4 crystal. A maximum CW output power of 6.85 W under the absorbed pump power of 24.1 W was obtained with a slope efficiency of 39.5% at a temperature of 17°C. With the same absorbed pump power, a maximum output energy per pulse of about 0.9 mJ and minimum pulse width of 4.7 ns were obtained at the pulsed repetition frequency (PRF) of 5 kHz, corresponding to a peak power of approximately 187.2 kW.
authors.forename: B Q
authors.initials: BQ
authors.lastname: Yao
authors.forename: Y
authors.initials: Y
authors.lastname: Ding
authors.forename: X M
authors.initials: XM
authors.lastname: Duan
authors.forename: T Y
authors.initials: TY
authors.lastname: Dai
authors.forename: Y L
authors.initials: YL
authors.lastname: Ju
authors.forename: L J
authors.initials: LJ
authors.lastname: Li
authors.forename: W J
authors.initials: WJ
authors.lastname: He
mesh_terms: D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*