28.02瓦侧面抽运连续波激光器，在YSGG/掺铒钇钪镓石榴石/YSGG晶体中以2.8微米波长运转。

28.02 W LD side-pumped CW laser operated at 2.8 µm in YSGG/Er:YSGG/YSGG crystal.

作者信息

Zhang Huili, Sun Dunlu, Luo Jianqiao, Quan Cong, Zhang Peixiong, Qiao Yang, Dong Kunpeng, Chen Yuwei, Wang Zhentao, Li Hongyuan, Cheng Maojie

出版信息

Opt Express. 2024 Mar 25;32(7):11665-11672. doi: 10.1364/OE.517771.

DOI:10.1364/OE.517771

PMID:38571008

Abstract

We demonstrated a 978 nm laser diode (LD) side-pumped YSGG/Er:YSGG/YSGG composite crystal with a size of Ф 3 mm × 65 mm and continuous-wave (CW) mode. By optimizing resonator length and output mirror transmittance, a maximum output power of 28.02 W is generated, corresponding to slope efficiency of 17.55% and optical-optical efficiency of 12.29%, respectively. The thermal focal lengths are obtained by resonator stability condition. The laser wavelength is centered near 2.8 µm. Moreover, the beam quality factors 2/ 2 are fitted to be 8.14 and 7.35, respectively. The above results indicate that a high-performance 2.8 µm CW laser can be achieved by LD side-pumped YSGG/Er:YSGG/YSGG composite crystal with excellent heat dissipation ability, which promotes effectively the development and applications of the mid-infrared solid-state lasers.

摘要

我们展示了一种尺寸为Ф 3 mm × 65 mm的978 nm激光二极管（LD）侧面泵浦的YSGG/Er:YSGG/YSGG复合晶体，其工作在连续波（CW）模式。通过优化谐振腔长度和输出镜透过率，产生了28.02 W的最大输出功率，对应的斜率效率和光光效率分别为17.55%和12.29%。通过谐振腔稳定性条件获得了热焦距。激光波长集中在2.8 µm附近。此外，光束质量因子2/ 2分别拟合为8.14和7.35。上述结果表明，具有优异散热能力的LD侧面泵浦YSGG/Er:YSGG/YSGG复合晶体能够实现高性能的2.8 µm连续波激光器，这有效地推动了中红外固态激光器的发展和应用。