A Comparative Study of Three-Wave, Four-Wave and Higher-Order-Wave Parametric Processes.
Final rept. Mar-Nov 74,
AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO
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This report examines three-wave, four-wave, and higher-order-wave parametric processes taking into account pump depletion. The theory for both three-wave forward traveling wave FTW and backward traveling wave BTW interactions is reviewed. A comprehensive comparison of three possible down conversion systems and three up conversion systems is made based on a common set of system parameters consisting of input pump excitation and the ratio of input signal to pump photon flux. Of the down conversion systems, the system consisting of a BTW at the signal frequency and a FTW at the pump frequency most efficiently transfers energy from the pump wave for any given level of pump excitation or ratio of signalpump photon flux. In up conversion, the system consisting of two forward traveling waves at the pump and signal frequencies is the most efficient.
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