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 Detalle_Publicacion

Liquid crystal lensacons, logarithmic and linear axicons

Abstract: Until now, several attempts have been made to obtain axicons by using liquid crystals. Previous results had always a considerable deviation from the linear response and the resulting aperture is square. In addition, classical fabrications methods are expensive and only produce fixed phase profiles. In this study, a novel structure to obtain tunable axicons with a perfect conical shape and a circular aperture is proposed and theoretically studied. The proposed optical device is based on nematic liquid crystal and phase shifted electrical signals. A simulation program consisted of Finite Elements Method to solve the voltage distribution combined with the Frank-Oseen equation to solve the molecular position of the nematic liquid crystal is employed. This device is totally reconfigurable by using low voltage signals. The focus depth and the position of this one can be controlled electrically.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Materials, 2014, 7(4), 2593-2604

Editorial: MDPI

 Fecha de publicación: 28/03/2014

Nº de páginas: 12

Tipo de publicación: Artículo de Revista

 DOI: 10.3390/ma7042593

ISSN: 1996-1944

 Proyecto español: TEC2009-13991-C02-01

Autoría

URRUCHI DEL POZO, VIRGINIA

BRAULIO GARCIA CAMARA

JOSE MANUEL SANCHEZ PENA