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Título:
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Structure of the dielectric tensor in nematic liquid crystals with topological charge
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Autores:
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Martínez Matos, Óscar ;
Vaveliuk, Pablo ;
Moraes, Fernando Jorge Sampaio ;
Fumeron, Sebastien ;
Calvo Padilla, María Luisa
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Tipo de documento:
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texto impreso
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Editorial:
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Optical Society of America, 2010-06
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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A q-plate is a stratified medium composed of a uniaxial nematic liquid crystal with an inhomogeneous orientation of the optical axis possessing a topological charge q, which looks promising as a switching device. This work reports an approach to diagonalizing the dielectric tensor in q-plates, giving a detailed study of nontrivial tensor coordinate transformations. The relationship between the diagonal dielectric tensor and the topological charge of the plate is established. From that, the dielectric tensor for a given q-plate can be explicitly calculated in a convenient frame, and hence the field propagation equations can be derived. These studies establish a theoretical basis that could further deepen the research on these particular structures for nonconventional manipulation of the light.
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En línea:
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https://eprints.ucm.es/id/eprint/25149/1/Martinez-Matos10libre.pdf
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