Open AccessWatt-level narrow-linewidth Nd:YAG laser operating on ^4F_3/2→^4I_15/2 transition at 1834 nm
Author(s) -
Bin Xu,
Yi Wang,
Xiaoxu Huang,
Jinglong Lan,
Zhi Lin,
Zhengqian Luo,
Huiying Xu,
Zhiping Cai,
R. Moncorgé
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.003601
Subject(s) - laser linewidth , materials science , laser , optics , slope efficiency , injection seeder , diode , laser power scaling , longitudinal mode , optoelectronics , semiconductor laser theory , fiber laser , physics
We report on a 808 nm diode-pumped Nd:YAG narrow linewidth laser at 1834.25 nm using a compact two-mirror linear cavity. In free-running mode, a maximum output power of 1.10 W is obtained with a slope efficiency of about 11.1% at a cooling temperature of the laser crystal of 18°C. Decreasing this temperature down to 8°C increases the output power linearly up to 1.31 W. Shortening the laser cavity reduces the output power down to about 0.70 W but on a single longitudinal mode. These laser results represent the best laser performance ever achieved with any Nd-doped bulk material in the 1.8 µm mid-infrared spectral range.