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Observation of locked optical kink-antikink spatial shock waves
Barak Freedman1, Tal Carmon, M I Carvalho
1Department of Physics and Solid State Institute, Technion, Haifa 32000, Israel.
Physical Review Letters
|October 4, 2003
Abstract:
We report the first experimental observation of optical spatial shock-wave pairs. The shock waves consist of two coupled kink and antikink beams that remain locked to each other throughout propagation in a nonlinear diffusion-driven photorefractive crystal. These coupled shock-wave pairs move undistorted at angles that fall outside their original angular sector of propagation.