title: High-power Cr2+:ZnS saturable absorber passively Q-switched Ho:YAG ceramic laser and its application to pumping of a mid-IR OPO.
abstract: We used the Cr2+:ZnS as a saturable absorber to obtain a passively Q-switched Ho:YAG ceramic laser operating near 2.1 μm. The maximum average output power of 14.8 W and a shortest pulse width of 29 ns were obtained, and to our knowledge, this is the best report for the PQS Ho:YAG ceramic laser. A maximum energy per pulse of 0.6 mJ with a maximum pulse repetition frequency of 24.4 kHz was achieved, which corresponded to a peak power of 20 kW. We first used the PQS laser as the pump source of optical parametric oscillator to obtain the mid-infrared laser. A maximum average output power of 4.4 W was achieved from the ZnGeP2 parametric oscillator, corresponding to a slope efficiency of 49.5% with respect to the incident pump power.
authors: Baoquan
authors: B
authors: Yao
authors: Jinhe
authors: J
authors: Yuan
authors: Jiang
authors: J
authors: Li
authors: Tongyu
authors: T
authors: Dai
authors: Xiaoming
authors: X
authors: Duan
authors: Yingjie
authors: Y
authors: Shen
authors: Zheng
authors: Z
authors: Cui
authors: Yubai
authors: Y
authors: Pan