title: Diffraction from an edge in a self-focusing medium.
abstract: We experimentally demonstrate diffraction from a straight edge in a medium with self-focusing nonlinearity. Diffraction into the shadow region is suppressed with increasing nonlinearity, but mode coupling leads to excitations and traveling waves on the high-intensity side. Theoretically, we interpret these modulations as spatially dispersive shock waves with negative pressure.
authors: Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA.
authors: Wenjie
authors: W
authors: Wan
authors: Dmitry V
authors: DV
authors: Dylov
authors: Christopher
authors: C
authors: Barsi
authors: Jason W
authors: JW
authors: Fleischer