Abstract

High-efficiency conversion of excimer laser radiation to Stokes radiation in a single-pass Raman cell using a long-focus pumping geometry has been reported.^1-3 References 1 and 2 were efficiency studies. Reference 3, using a diffraction-limited XeCl pump laser, reported a Stokes output that was 7× diffraction limited at 88% photon efficiency. We report here a study of the coherence properties vs efficiency of Stokes beams generated with a diffraction-limited XeF pump laser and long-focus geometry. The study, which was carried out tc provide base line data for computer modeling of stimulated Raman scattering, reveals strikingly different behavior from the XeCl result.

© 1985 Optical Society of America