Abstract

A dual-wavelength passively Q-switched Ho:GdVO₄ self-Raman laser in the 2.5 µm wave band was demonstrated with Cr:ZnS as a saturable absorber. Synchronized dual-wavelength pulsed laser outputs at 2473 nm and 2520 nm were acquired, corresponding to Raman frequency shifts of 808 cm⁻¹ and 883 cm⁻¹, respectively. The maximum total average output power of 114.9 mW was obtained at an incident pump power of 12.8 W with a pulse repetition rate of 3.57 kHz and a pulse width of 16.36 ns. The maximum total single pulse energy was 32.18 µJ, corresponding to a total peak power of 1.97 kW. The power ratios of the two Raman lasers can be controlled by varying the incident pump power. To the best of our knowledge, this is the first time a dual-wavelength passively Q-switched self-Raman laser in the 2.5 µm wave band has been reported.

© 2023 Optica Publishing Group

Simultaneous dual-wavelength operation of Nd:YVO₄ self-Raman laser at 1524 nm and undoped GdVO₄ Raman laser at 1522 nm

Hongbin Shen, Qingpu Wang, Xingyu Zhang, Zhaojun Liu, Fen Bai, Zhenhua Cong, Xiaohan Chen, Zhenguo Wu, Weitao Wang, Liang Gao, and Weixia Lan
Opt. Lett. 37(19) 4113-4115 (2012)

Diode-pumped actively Q-switched Tm, Ho:GdVO₄/BaWO₄intracavity Raman laser at 2533 nm

Jiaqun Zhao, Xinlu Zhang, Xu Guo, Xiujuan Bao, Li Li, and Jinhui Cui
Opt. Lett. 38(8) 1206-1208 (2013)

1164.4  nm and 1174.7  nm dual-wavelength Nd : GdVO₄/Cr⁴⁺ : YAG/YVO₄ passively Q-switched Raman microchip laser

Xiaojie Wang, Xiaolei Wang, Zhifen Zheng, Xihao Qiao, and Jun Dong
Appl. Opt. 57(12) 3198-3204 (2018)

Simultaneous dual-wavelength pulses achieved by mixing spiking and passive Q-switching in a pulsed Nd:GdVO₄ laser with a Cr⁴⁺:YAG saturable absorber

Kun-Guei Hong and Ming-Dar Wei
Opt. Lett. 41(10) 2153-2156 (2016)

Compact passively Q-switched RbTiOPO₄ cascaded Raman operation

Yanmin Duan, Jing Zhang, Haiyong Zhu, Yongchang Zhang, Changwen Xu, Hongyan Wang, and Dianyuan Fan
Opt. Lett. 43(19) 4550-4553 (2018)