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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 NO₂ and I₂ 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.
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Wiggins et al. (1968) studied this question.
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