Тип публикации: статья из журнала
Год издания: 2020
Идентификатор DOI: 10.1016/j.optmat.2019.109630
Ключевые слова: Photonic structure; Optical modes; Nematic liquid crystal; Electroconvective instability; Cross-polarization diffraction; Geometric phase, Cross-polarization diffraction, Electroconvective instability, Geometric phase, Nematic liquid crystal, Optical modes, Photonic structure
Аннотация: Optical modes of a multilayered photonic structure with the twisted nematic liquid crystal as a defect layer have been investigated. The electroconvective flow in the nematic makes a spatially periodic structure in the form of abnormal rolls. Non-adiabatic propagation of polarized light in the defect layer causes unique features ofПоказать полностьюthe optical modes corresponding to the ordinary o-waves. The decay of these modes has been demonstrated with increasing voltage due to the effect of cross-polarization diffraction loss. The modes short-wave shift resulting from the contribution of the non-adiabatic geometric phase to the total phase delay of the wave during a round-trip propagation through the photonic structure has been found both experimentally and numerically.
Журнал: OPTICAL MATERIALS
Выпуск журнала: vol. 100
Номера страниц: 109630
ISSN журнала: 09253467
Место издания: AMSTERDAM
Издатель: ELSEVIER