Highhyphen;efficiency energy extraction in backwardhyphen;wave Raman scattering

摘要

Pump depletions of 70ndash;75percnt; have been demonstrated for a KrFhyphen;laserhyphen;driven, methanehyphen;gashyphen;filled backward Raman amplifier and are in agreement with predictions of the Frantzhyphen;Nodvik saturatedhyphen;amplifier model. The associated counterpropagating Stokes laser intensity is determined to be gsim;3.5 times that of the pump; the corresponding pulse compression ratio is ap;5.