Stimulated Thermal Rayleigh Scattering in Gases

Abstract

Stimulated thermal Rayleigh scattering that has been seen previously in absorbing liquids has been observed in gaseous nitrogen and carbon dioxide using small amounts of N${\mathrm{O}}_2$ and ${\mathrm{I}}_2$ to produce absorption. The anti-Stokes shift of half the half-intensity width of the incident light, thresholds, gain narrowing, and critical absorption coefficients were observed.