Phase Controlled Transistor Action by Cascading of Second-Order Nonlinearities

D. J. Hagan, M. Sheik-Bahae, Z. Wang, G. Stegeman, E. W. Van Stryland, and G. Assanto

Opt. Lett. 19, 1305-1307 (1994)

Abstract:

We demonstrate a 4.6- to -1 modulation depth imposed on the fluence of an intense 1.06-micron picosecond pulse by varying the relative phase of a weak second-harmonic control pulse under near phase-matched conditions. This transistorlike action is based on quadratic nonlinearities in KTP.