Abstract

The generation of mid-infrared pulsed lasers was achieved in a Ho³⁺:YAG laser pumped gain-switched Cr²⁺:CdSe laser system with the shortest pulse duration of 4.15 ns. With a pump pulse duration of 50 ns and pump power of 2.7 W, the gain-switched Cr²⁺:CdSe laser achieved over 10 times pulse narrowing, obtaining the maximum peak power of 5.7 kW. The optical-to-optical conversion efficiency was 3.7%, which could be further improved with better crystal surface polishing quality. The laser central wavelength was measured to be 2.65 μm with a bandwidth (FWHM) of 50 nm. In addition, the parameter optimization for suppressing the pulse tail was discussed, while the long cavity and high output transmissivity contributed to obtaining the single-peak pulses.

© 2020 Chinese Laser Press

High-efficiency high-repetition-rate gain-switched operation around 3 μm in Cr²⁺:CdSe single-crystal laser pumped by fiber-laser-pumped Ho³⁺:YAG laser

Oleg L. Antipov, Ilya D. Eranov, Mikhail P. Frolov, Yuri V. Korostelin, Vladimir I. Kozlovsky, and Yan K. Skasyrsky
Opt. Lett. 44(5) 1285-1288 (2019)

Cr²⁺: CdSe passively Q-switched Ho: YAG laser

Encai Ji, Mingming Nie, Xing Fu, Zhouguo Guan, and Qiang Liu
Opt. Lett. 42(13) 2555-2558 (2017)

Gain-switched Ho:YAG laser with a 3.35-ns pulse duration

Yechiel Bach, Rotem Nahear, and Salman Noach
Opt. Lett. 47(24) 6432-6435 (2022)

Short pulse-width gain-switched Ho:YAG ceramic laser at ∼2.09  μm

Jianing Zhang, QiYao Liu, Deyuan Shen, Jian Zhang, Dingyuan Tang, and Hao Chen
Appl. Opt. 55(8) 1890-1893 (2016)

High-power Cr²⁺:ZnS saturable absorber passively Q-switched Ho:YAG ceramic laser and its application to pumping of a mid-IR OPO

Baoquan Yao, Jinhe Yuan, Jiang Li, Tongyu Dai, Xiaoming Duan, Yingjie Shen, Zheng Cui, and Yubai Pan
Opt. Lett. 40(3) 348-351 (2015)