Abstract

We report the light-induced control of optical phase shift by a liquid crystal cell made with ${\mathrm{LiNbO}}_3\text{:}\mathrm{Fe}$ crystals as substrates. We show that a phase shift of a few $\pi s$ can be easily reached for two orthogonal polarizations due to liquid crystal reorientation driven by the photovoltaic electric field originated in the substrates. This effect is exploited to get all-optical switching with a contrast of about 80%, by 2 s pump pulse.

© 2016 Optical Society of America

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