Influence of the backward propagating waves on the twist optical Fréedericksz transition in planar nematic films
KRIMER, Dmitry O.
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
KRIMER, Dmitry O.
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
< Réduire
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]
Langue
en
Article de revue
Ce document a été publié dans
Liquid Crystals. 2011-02-16, vol. 38, n° 8, p. 1021-1026
Taylor & Francis
Résumé en anglais
We report on the influence of backward propagating waves on the twist optical Fréedericksz transition when a linearly polarised light impinges at normal incidence on a nematic liquid crystal film with planar alignment. We ...Lire la suite >
We report on the influence of backward propagating waves on the twist optical Fréedericksz transition when a linearly polarised light impinges at normal incidence on a nematic liquid crystal film with planar alignment. We show that the reorientation threshold oscillates as a function of the optical thickness of the nematic layer. The amplitude of these oscillations strongly depends on the refractive index changes at the film boundaries and is shown to be related to interferential effects between forward and backward propagating waves that arise from unavoidable dielectric permittivity tensor mismatch and the film boundaries.< Réduire
Mots clés en anglais
nematic liquid crystals
Fréedericksz transition
orientational transitions
nonlinear optics
Origine
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