Spatial switching of solitary waves in KTP

Here, the stable beams are a result of strongly coupled interacting waves. Indeed, the use of second-order effects has proven sucessful in stabilizing 2D beams in KTP both experimentally and in numerical simulations of beam propagation. We discuss experimental demonstrations of 2D spatial solitary waves, and the application of these beams to the practical problems of spatial beam clean-up and all-optical switching.