All-optical switching by spatial walk-off compensation and solitary-wave locking

W.E. Torruellas, G. Assanto, B.L. Lawrence, R.A. Fuerst, and G.I. Stegeman

Appl. Phys. Lett. 68, 1449-1451(1996)

Abstract:

We demonstrate a novel approach to phase insensitive, all-optical steering and switching based on an intensity-induced change in the propagation direction of multidimensional spatial solitary waves in bulk, birefringent, quadratic nonlinear media. Our demonstration is based on second-harmonic generation in a KTP crystal. Compensation for the lateral displacements due to walkoff in SHG is observed.