The alignment of nematic liquid crystals in a hybrid cell can be easily reconfigured by applying an external electric field. We exploit this feature to realize a waveguiding structure whose refractive index profile can be dynamically reshaped. The mode structure of the guided light, investigated by m-lines spectroscopy at various electric field strenghts, can be well predicted by a parameter-free model based on the elastic, dielectric, and optical properties of the liquid crystal. According to such a model, the field profiles of the modes supported by hybrid nematic waveguides display very peculiar features.
Titolo: | Guided propagation in electric-field-controlled hybrid nematic waveguides |
Autori: | |
Settore Scientifico Disciplinare: | Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin) |
Data di pubblicazione: | 2004 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | 10.1063/1.1710722 |
Appare nelle tipologie: | 01 - Articolo su periodico |
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