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Signal processing by opto-optical interactions between self-localized and free propagating beams in liquid crystals

Alessia Pasquazi·Alessandro Alberucci·Marco Peccianti·Gaetano Assanto
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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 co-polarized guided signal of different wavelength. Angular steering as large as 2.2 degrees was obtained for control powers as low as 32mW in the near infrared.

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Alessia Pasquazi, Alessandro Alberucci, Marco Peccianti, Gaetano Assanto. 2005-09-08. Signal processing by opto-optical interactions between self-localized and free propagating beams in liquid crystals. https://doi.org/10.1063/1.2158026

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