Volume 48, Number 2, October II 1999
|Page(s)||177 - 181|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 September 2002|
Point of ultra-sensitivity to perturbations for axial propagation in helicoidal bianisotropic structures
KLA-Tencor Corporation - 4 Science Avenue, P.O. Box 143, Migdal Haemek 23100, Israel
Accepted: 26 August 1999
It is shown that under a certain condition the optical properties of helicoidal bianisotropic structures for propagation along the helix exhibit drastic changes. An inhibition of the Bragg reflection occurs and the structure behaves optically as an isotropic medium. A very small perturbation to the structure can then induce a strong optical effect.
PACS: 61.30.-v – Liquid crystals / 42.70.-a – Optical materials / 78.20.Ci – Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)
© EDP Sciences, 1999
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