标题：High-repetition-rate kHz electro-optically Q-switched Ho, Pr: YLF 2.9 mu m bulk laser
作者：Nie, Hongkun; Shi, Bingnan; Xia, Haiping; Hu, Jianxu; Zhang, Baitao; Yang, Kejian; He, Jingliang
作者机构：[Nie, Hongkun; Shi, Bingnan; Zhang, Baitao; Yang, Kejian; He, Jingliang] Shandong Univ, Inst Crystal Mat, State Key Lab Crystal Mat, Jinan 250100, Peo 更多
通讯作者：Zhang, BT;Zhang, Baitao
通讯作者地址：[Zhang, BT]Shandong Univ, Inst Crystal Mat, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
摘要：In this study, we operated a novel bulk laser: a dual-end-pumped electro-optically (EO) Q-switched Ho, Pr:YLF laser at 2945.9 nm with a repetition rate of kHz level. The shortest pulse duration of 25.2 ns was obtained at the repetition rate of 500 Hz. corresponding to a single pulse energy of 0.4 mJ and a peak power of 15.9 kW. A maximum output power of 268 mW was delivered at the repetition rate of 1.5 kHz. The beam quality factors of the EO Q-switched Ho, Pr:YLF laser at the maximum output power were M-x(2) = 1.50 and M-y(2) = 1.54 in x- and y- directions, respectively. The long-term output power instability was measured to be +/- 1.5% (RMS) within five hours. The achieved results indicated the promising potential of Ho, Pr: YLF crystals for high repetition rate Q-switched mid-infrared laser pulse generation very well. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement