Self-healing generation of spatial solitons in liquid crystals.
We demonstrate that, in suitably designed cells with undoped nematic liquid crystals, extraordinary-wave spatial solitons can be excited at every applied voltage without adjustments in the input polarization. Their walk-off, hence direction of propagation, is externally controlled over angles as large as 7 degrees. The results pave the way not only to polarization-forgiving generation but also to voltage readdressing of these extraordinary-wave nematicons.
Alberucci
A
A
Nonlinear Optics and Optoelectronics Laboratory, National Institute for the Physics of Matter and Department of Electronic Engineering, University "Roma Tre," Via della Vasca Navale, 84-00146 Rome, Italy.
Peccianti
M
M
Assanto
G
G
Coschignano
G
G
De Luca
A
A
Umeton
C
C