Open AccessElectrooptic jumps in natural helicoidal photonic bandgap structures
Author(s) -
Karen Allahverdyan,
Tigran Galstian
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.004611
Subject(s) - photonic crystal , materials science , optics , electric field , band gap , dielectric , anisotropy , deformation (meteorology) , substrate (aquarium) , photonics , liquid crystal , optoelectronics , physics , composite material , oceanography , quantum mechanics , geology
Strong electro mechanical effect was used to generate and study self adaptation and pitch jumps in a helicoidal photonic bandgap structure naturally formed by a cholesteric liquid crystal. The negative dielectric anisotropy of the material allowed its stabilization by the electric field and important thickness changes, achieved thanks to the use of a very thin substrate, allowed the observation of multiple dynamic jumps at fixed deformation conditions. Spectral and morphological studies of the material during those jumps were performed too.