During the past few years major advances have been made, both in performance and theoretical understanding, of frequency converters based on the Raman effect. The impetus for the effort has come largely from the NAVY/DARPA interest in advanced blue-green communication systems, but other applications such as isotope separation and remote sensing have contributed as well. Parallel efforts exist in development of backward Raman pulse compressors for ICF applications, but these will not be discussed in this paper.

© 1982 Optical Society of America

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