MIROSHNICHENKO, Andrey E.; BRASSELET, Etienne; KIVSHAR, Yuri S.

doi:10.1103/PHYSREVA.78.053823

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MIROSHNICHENKO, Andrey E.
Nonlinear Physics Center
Centre for Ultra-high bandwidth Devices for Optical Systems [CUDOS]

BRASSELET, Etienne
Centre de physique moléculaire optique et hertzienne [CPMOH]

KIVSHAR, Yuri S.
Nonlinear Physics Center
Centre for Ultra-high bandwidth Devices for Optical Systems [CUDOS]

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Physical Review A : Atomic, molecular, and optical physics [1990-2015]. 2008-11-19, vol. 78, n° 5, p. 053823 (1-11)

American Physical Society

Résumé en anglais

We theoretically study and compare the light-induced Fréedericksz transition and above-threshold reorientation in pure and dye-doped nematic liquid crystals embedded into periodic dielectric structures. The presence of optical defect modes is found to significantly alter the effective influence of dyes as compared to the standard case of liquid crystal films without periodic structure, which is due to the overall resonant absorption of the dye-doped liquid crystal layer. Both statics and dynamics are discussed. In particular, it is found that optical response time can be up to several orders of magnitude faster with pure liquid crystals than with dye-doped ones. Thermal effects caused by absorption of dyes are also investigated to gauge whether it may induce nematic-to-isotropic phase transition.< Réduire

Mots clés en anglais

Photonic bandgap materials

Liquid crystals

Optical bistability

multistability

and switching

including local field effects

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Light-induced orientational effects in periodic photonic structures with pure and dye-doped nematic liquid crystal defects

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