Personal tools
Document Actions
A. Alberucci, C. P Jisha and G. Assanto (2015)
Nonlinear negative refraction in reorientational soft matter
We analyze the propagation of self-trapped optical beams close to the Fréedericksz threshold in nematic liquid crystals. Accounting for power-dependent changes in walk-off due to the all-optical response, we demonstrate that light beams can switch from positive to negative refraction according to the excitation.