Efficient diode-end-pumped continuous-wave and pulsed 2.79 μm mid-IR Er:YSGG laser for potential use in blood sampling

An efficient, compact 970 nm laser diode end-pumped Er:YSGG laser operating in continuous and pulsed modes is reported. In the continuous-wave regime, an output power of ∼1.6  W mid-infrared laser with 2.79  μm wavelength is obtained, corresponding to an optical efficiency of 19.6% and slope efficie...

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Bibliographic Details
Published in:Optical engineering 2024-08, Vol.63 (8), p.086104-086104
Main Authors: Liu, Yang, Liu, Bin, Qiu, Xiaoyan, Jin, Yiwen, Peng, Yichao, Ye, Zhibin, Hu, Miao, Liu, Chong
Format: Article
Language:English
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Summary:An efficient, compact 970 nm laser diode end-pumped Er:YSGG laser operating in continuous and pulsed modes is reported. In the continuous-wave regime, an output power of ∼1.6  W mid-infrared laser with 2.79  μm wavelength is obtained, corresponding to an optical efficiency of 19.6% and slope efficiency of 25.3%. In the pulsed regime, an energy of 144 mJ and a slope efficiency of 43.5% are achieved with a 30 at. % Er:YSGG crystal in 3×3×5  mm3 dimensions. The high-pulse energy and the high efficiency indicate that Er:YSGG lasers can potentially be used for blood sampling.
ISSN:0091-3286
1560-2303
DOI:10.1117/1.OE.63.8.086104