All-optical processing by means of Vectorial Interactions in Second-Order Cascading: Novel approaches

G. Assanto, I. Torelli, and S. Trillo

Opt. Lett. 19, 1720-1722 (1994)


Based on the tensorial nature of second-order nonlinear susceptibilities, we show how two orthogonal field components at frequency w can interact by means of the generated second harmonic, with a resulting coherent control of one onto the other. All optical transistor operation and polarization switching are among the signal functions that can be implemented in properly oriented crystals.