High efficient generation of IR beam by SRS of high pressure H2, D2 and CH4

5^th International Conference and Exhibition on Lasers, Optics & Photonics

November 28-30, 2016 Atlanta, USA

Jinbo Liu, Zhonghui Li, Dongjian Zhou, Dong Liu, Jingwei Guo and Xianglong Cai

Dalian Institute of Chemical Physics - CAS, China

Scientific Tracks Abstracts: J Laser Opt Photonics

Abstract :

High efficient generation of IR beam by SRS of high pressure H2, D2 and CH4: Stimulated Raman scattering (SRS) is a very effective method to expand the spectrum range of high power laser, especially in the regime of near IR and middle IR. In this paper, SRS of high pressure H2, D2 and CH4 with multiple-pass cell configuration were reported. By the optimization of experimental parameter, such as the pressure of Raman gas and buffer gas, the number of passes, the radium of focus lens, and the radium of curvature mirror, etc., the best conversion efficiency of the first stokes (S1) and the first stokes (S2) was achieved. The lowest S1 threshold was 0.18 MW, and the best S1 conversion efficiency is up to 75%; the lowest S2 threshold was 2.2 MW, and the best S2 conversion efficiency is up to 34%. By the combination of Raman gases and orders of stokes, lasers with wavelength of 1.54 �¼m, 1.56 �¼m, 1.91 �¼m, 2.80 �¼m and 2.92 �¼m were generated. Experimental results also indicated that lasers with wavelength of 9.8 �¼m and 22.9 �¼m were generated.

Biography :

Jinbo Liu has completed his Doctor degree from Harbin Institute of Technology in 2009 and then worked in the Key Laboratory of Chemical Laser, Dalian Institute of Chemical Physics- CAS. Currently, he is an Associate Professor/Master Director of Chemical Physics.

Email: liujinbo@dicp.ac.cn