title: Resonantly pumped Q-switched Er:YAG ceramic laser at 1645 nm.
abstract: We report on an acousto-optic Q-switched 1645 nm Er:YAG ceramic laser resonantly pumped by using an Er,Yb fiber laser at 1532 nm. Maximum continuous wave output powers of 2.1 W and 2.4 W were obtained for 10% and 20% transmission OCs under 10.5 W of incident pump power, respectively. In Q-switched mode, the laser produced pulses with ~3.7 mJ energy and 82 ns width at 200 Hz repetition rate for 20% transmission OC under 8.6 W of incident pump power, corresponding to a peak power of ~45 kW.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Ting
authors.initials: T
authors.lastname: Zhao
authors.forename: Deyuan
authors.initials: D
authors.lastname: Shen
authors.forename: Heyuan
authors.initials: H
authors.lastname: Zhu
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Dingyuan
authors.initials: D
authors.lastname: Tang