Nonlinear shift of spatial solitons at a graded dielectric interface

M. Peccianti, G. Assanto, A. Dyadyusha, and M. Kaczmarek

Opt. Lett. 32, 271-273 (2007)

Abstract:

We investigate total internal reflection of optical spatial solitons at the interface between two regions of nematic liquid crystals with different optical densities. Due to nonlinear molecular reorientation, the solitons experience a penetration depth, hence, a lateral shift that depends on the excitation, with lateral shifts from 0.7 to 1.2 mm as input powers increased from 1.6 to 9.3 mW.