The amplification of stimulated Raman scattering in H2 pumped by a Q-switched Nd:YAG laser

Canhua Zhou; Dongjian Zhou; Xianglong Cai; Hui Li; Zhe Shi; Shu Hu; Jingwei Guo; Yuqi Jin

doi:10.1117/12.2065340

3 February 2015 The amplification of stimulated Raman scattering in H₂ pumped by a Q-switched Nd:YAG laser

Canhua Zhou, Dongjian Zhou, Xianglong Cai, Hui Li, Zhe Shi, Shu Hu, Jingwei Guo, Yuqi Jin

Proceedings Volume 9255, XX International Symposium on High-Power Laser Systems and Applications 2014; 92552G (2015) https://doi.org/10.1117/12.2065340
Event: XX International Symposium on High Power Laser Systems and Applications, 2014, Chengdu, China

Abstract

The experimental study of the amplification of stimulated Raman scattering (SRS) in high purity H₂gas was demonstrated employing a Q-switched Nd:YAG laser at 1064 nm as the pump source. A part of the 1064 nm pump light (20% in energy) was focused into the first H₂ gas cell to generate the backward first Raman Stokes light (BS1), which is taken as the Raman seed light. The BS1 seed light combined to the residual pump light were focused into the second H₂gas cell to get the amplification of the S1 1900 nm infrared Raman light. In this study, the maximum quantum conversion efficiency of the S1 light was estimated to be 76%. Under the condition of the same pump energy, especially for the low pump energy (lower than 40 mJ), the quantum conversion efficiency of the S1 light with the Raman seed light was significantly increased comparing to the single focus geometry (without the Raman seed light).

Citation Download Citation

Canhua Zhou, Dongjian Zhou, Xianglong Cai, Hui Li, Zhe Shi, Shu Hu, Jingwei Guo, and Yuqi Jin "The amplification of stimulated Raman scattering in H₂ pumped by a Q-switched Nd:YAG laser", Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 92552G (3 February 2015); https://doi.org/10.1117/12.2065340

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