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10. Nematicons in planar cells subject to the optical Fréedericksz threshold

Author

Malgosia Kaczmarek, Nina Kravets, Gaetano Assanto, Oleksandr Buchnev, Alessandro Alberucci, Armando Piccardi, Alberucci, Alessandro, Kravets, Nina, Piccardi, Armando, Buchnev, Oleksandr, Kaczmarek, Malgosia, and Assanto, Gaetano

Subjects
Materials science, Bistability, Fréedericksz transition, business.industry, Physics::Optics, Nonlinear optics, Atomic and Molecular Physics, and Optics, Condensed Matter::Soft Condensed Matter, Optics, Planar, Liquid crystal, Light beam, Photonics, business, Excitation
Abstract

We investigate, both theoretically and experimentally, self-trapping of light beams in nematic liquid crystals arranged so as to exhibit the optical Fréedericksz transition in planar cells. The resulting threshold in the nonlinear reorientational response supports a bistable behavior between diffracting and self-localized beam states, leading to the appearance of a hysteretic loop versus input excitation. Our results confirm the role of nematic liquid crystals in the study of non-perturbative nonlinear photonics.

Published
2014

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