Pressure-broadening studies of the 3.51μm line of xenon by saturated-amplification techniques

Abstract
A saturated-amplification experiment has been used to determine the variation of the Lorentzian width of the 3.51 mu m line of xenon with pressure. Measurements show a nonlinear dependence for p50 mTorr; the slope is then (30+or-3) MHz Torr-1. The effect of strong elastic collisions is demonstrated by the superimposition of a broad background on the Lorentzian profile.