Abstract
An investigation of stimulated Raman scattering (SRS) of short-pulse (6-ns) XeCl-laser radiation in Pb vapor is reported. Conversion efficiencies, based on peak power, up to 15% have been obtained for Pb-oven temperatures of 1260 degrees C. The functional dependence of conversion efficiency, in the short-pulse regime, upon buffer-gas pressure and species differs significantly from that observed for long-pulse (>20-ns) pumping, corresponding to steady state behavior. Analysis of the data and comparison with transient SRS in H/sub 2/ yield an estimate of T/sub 2/ approximately=1ns for the transient response time T/sub 2/ of Pb vapor. The observed pressure effects are explained in terms of a reduction in T/sub 2/, and hence Raman gain, by collisions with buffer-gas atoms.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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