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Voltage-driven beam bistability in a reorientational uniaxial dielectric

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Original languageEnglish
Article number011302
JournalAPL Photonics
Publication statusPublished - 2016
Publication typeA1 Journal article-refereed


We report on voltage controlled bistability of optical beams propagating in a nonlocal reorientational uniaxial dielectric, namely, nematic liquid crystals. In the nonlinear regime where spatial solitons can be generated, two stable states are accessible to a beam of given power in a finite interval of applied voltages, one state corresponding to linear diffraction and the other to self-confinement. We observe such a first-order transition and the associated hysteresis in a configuration when both the beam and the voltage reorientate the molecules beyond a threshold.

Publication forum classification

Field of science, Statistics Finland