The reorientational nonlinearity of nematic liquid crystals enables a self-localized spatial soliton and its waveguide to be deflected or destroyed by a control beam propagating across the cell. We demonstrate a simple all-optical readdressing scheme by exploiting the lens-like perturbation induced by an external beam on both a nematicon and a copolarized guided signal of different wavelength. Angular steering as large as 2.2 deg was obtained for control powers as low as 32 mW in the near infrared. (c) 2005 American Institute of Physics.
Pasquazi, A., Alberucci, A., Peccianti, M., Assanto, G. (2005). Signal processing by opto-optical interactions between self-localized and free propagating beams in liquid crystals RID C-6517-2008 RID F-7127-2011. APPLIED PHYSICS LETTERS, 87(26) [10.1063/1.2158026].
Signal processing by opto-optical interactions between self-localized and free propagating beams in liquid crystals RID C-6517-2008 RID F-7127-2011
ASSANTO, GAETANO
2005-01-01
Abstract
The reorientational nonlinearity of nematic liquid crystals enables a self-localized spatial soliton and its waveguide to be deflected or destroyed by a control beam propagating across the cell. We demonstrate a simple all-optical readdressing scheme by exploiting the lens-like perturbation induced by an external beam on both a nematicon and a copolarized guided signal of different wavelength. Angular steering as large as 2.2 deg was obtained for control powers as low as 32 mW in the near infrared. (c) 2005 American Institute of Physics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
