New gain mechanism for wave amplification in photorefractive materials

Ringhofer, K. H.; Solymar, L.
September 1988
Applied Physics Letters;9/19/1988, Vol. 53 Issue 12, p1039
Academic Journal
It is shown that there is a gain mechanism in three- and four-wave forward interactions in which power is transferred inwards from the pump beams to the signal beams. The special case of amplifying a wave halfway between the pump waves is discussed.


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