Diffraction from an edge in a self-focusing medium.
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.
Wan
Wenjie
W
Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA.
Dylov
Dmitry V
DV
Barsi
Christopher
C
Fleischer
Jason W
JW