Beam Combining of Excimer Lasers by Stimulated Raman Scattering
Final rept. 16 Jul 1985-31 Dec 1989
MONTANA STATE UNIV BOZEMAN DEPT OF PHYSICS
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The primary objective of this research was to determine those factors which would influence the gain in a Raman amplifier that was pumped by a broadband excimer laser. Initial studies concentrated on determining the spatial structure from a Raman generator. The spatial structure was understood in terms of propagation in a quadratic index media. This well characterized generator output was then injected into a Raman amplifier for gain enhancement studies. This research indicated that a multimode, random phase model for the broadband pump could be used to predict the gain enhancements observed. However, our most recent data indicates that the model fails to account for the transiency found in lower pressure Raman amplifiers. However, further studies will be necessary to resolve this issue.
- Lasers and Masers