Influence of the backward propagating waves on the twist optical Freedericksz 
transition in planar nematic films

Krimer, D. O.; Miroshnichenko, A. E.; Brasselet, E.

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Influence of the backward propagating waves on the twist optical Freedericksz transition in planar nematic films

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Krimer, D. O.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Miroshnichenko, A. E.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Krimer, D. O., Miroshnichenko, A. E., & Brasselet, E. (2011). Influence of the backward propagating waves on the twist optical Freedericksz transition in planar nematic films. Liquid Crystals, 38(8), 1021-1026.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-8DEF-6

Abstract

We report on the influence of backward propagating waves on the twist optical Freedericksz 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.