Optical Digital Logic Operations by Two Beam Coupling in Photorefractive Material

Abstract

Optical devices performing nonlinear operations are highly desirable for parallel optical computing. Nonlinear optical devices based on the liquid crystal light valve [1,2], Fabry-Perot resonator [3], acousto-optic devices [4], and, recently, on four-wave mixing in photorefractive materials [5,6] have been reported.