Nonlinear Phase Shifts in a Counterpropagating Quasi-Phase-Matched Configuration

Abstract

Recently, there has been a large interest in cascaded second order processes for many applications including optical transistors,¹ and all optical switching.² One important aspect of these processes is the ability to produce large nonlinear phase shifts at relatively low input intensities. This poster presents a novel quasi-phase matching scheme to obtain nonlinear phase shifts via cascaded second order processes in a counterpropagating configuration.