Multiple relaxation and inhomogeneous broadening in resonance enhanced Raman scattering: Application to tunable infrared generation

The solutions for the imaginary susceptibility of the Raman field transition with arbitrary relaxation rates and field strengths are examined for differeing sets of relaxation rates with emphasis on alkali metal vapors which have spontaneous emission dominated relaxation. The model is further expanded to include Doppler broadening and used to predict the peak gain as a function of detuning for a frequency doubled alexandrite laserpumped cesium vapor gain cell.This work was supported by an Alfred P.Sloan Fellowship and a grant from the National Aeronautics and Space Administration (NAG-5-526)