Stimulated Raman scattering has been investigated in H2 and in different H₂ - foreing gas mixtures with a UV - preionized XeCl discharge laser (308 nm) as the pump. Helium, neon and nitrogen have been tested as foreing gases.The energy conversion efficiency of the pump laser beam to Stokes beams has been investigated as a function of the foreing gas concentration and of the pump beam energy. In all the investigated mixtures with 50 percent of H2, the energy conversion efficiency to the first Stokes was more than 70% higher than that obtained in pure H₂ at the same total pressure (40 bar) and pump energy (60 mJ).

Date Published: 22 September 1987
PDF: 5 pages
Proc. SPIE 0801, High Power Lasers: Sources, Laser-Material Interactions, High Excitations, and Fast Dynamics, (22 September 1987); doi: 10.1117/12.941229

Published in SPIE Proceedings Vol. 0801:
High Power Lasers: Sources, Laser-Material Interactions, High Excitations, and Fast Dynamics
Ernst-Wolfgang Kreutz; A. Quenzer; Dieter Schuoecker, Editor(s)