We demonstrate that light refraction at a straight interface between an isotropic dielectric and a nematic liquid crystal can change from positive to negative depending on power. The phenomenon relies on the reorientational response and the all-optical rotation of the optic axis, causing in turn variations in walk-off and beam self-steering.
Kravets, N., Piccardi, A., Alberucci, A., Buchnev, O., Assanto, G. (2015). Observation of Beam Self-Induced Transition from Positive to Negative Optical Refraction in Nematic Liquid Crystals. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 619(1), 28-34 [10.1080/15421406.2015.1088761].
Observation of Beam Self-Induced Transition from Positive to Negative Optical Refraction in Nematic Liquid Crystals
KRAVETS, NINA;PICCARDI, ARMANDO;ALBERUCCI, ALESSANDRO;ASSANTO, GAETANO
2015-01-01
Abstract
We demonstrate that light refraction at a straight interface between an isotropic dielectric and a nematic liquid crystal can change from positive to negative depending on power. The phenomenon relies on the reorientational response and the all-optical rotation of the optic axis, causing in turn variations in walk-off and beam self-steering.File in questo prodotto:
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