Stimulated Raman scattering in H2 and D2 using a pulsed Nd:YAG laser at 355 nm

Abstract

The stimulated Raman scattering (SRS) technique has been sued for upward and downward shifting the 3rd harmonic of a pulsed Nd:YAG laser into the 274-503 nm wavelength region. The gases investigated were hydrogen (H2) and deuterium (D2), using helium (He) as buffer gas. Experimental results on the output Stokes and anti-Stokes conversion efficiencies of the forward SRS technique in H2, D2 and He, versus Raman gas pressure and input pump energy, are presented. Conversion efficiencies more than 40 percent were achieved and the output energies obtained at the various ultraviolet and visible wavelengths were of the order of several mJ.