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Positive-negative tunable liquid crystal lenses based on a microstructured transmission line


Abstract: In this work, a novel technique to create positive-negative tunable liquid crystal lenses is proposed and experimentally demonstrated. This structure is based on two main elements, a transmission line acting as a voltage divider and concentric electrodes that distribute the voltage homogeneously across the active area. This proposal avoids all disadvantages of previous techniques, involving much simpler fabrication process (a single lithographic step) and voltage control (one or two sources). In addition, low voltage signals are required. Lenses with switchable positive and negative focal lengths and a simple, low voltage control are demonstrated. Moreover, by using this technique other optical devices could be engineered, e.g. axicons, Powell lenses, cylindrical lenses, Fresnel lenses, beam steerers, optical vortex generators, etc. For this reason, the proposed technique could open new venues of research in optical phase modulation based on liquid crystal materials.



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 Autoría: Algorri J.F., Morawiak P., Bennis N., Zografopoulos D.C., Urruchi V., Rodríguez-Cobo L., Jaroszewicz L.R., Sánchez-Pena J.M., López-Higuera J.M.,

 Fuente: Scientific Reports, 2020, 10(1), 10153

Editorial: Nature Publishing Group

 Fecha de publicación: 01/12/2020

Nº de páginas: 9

Tipo de publicación: Artículo de Revista

DOI: 10.1038/s41598-020-67141-z

ISSN: 2045-2322

Proyecto español: TEC2013-47342-C2-2-R ; TEC2016-76021-C2-2-R ; RTC2017-6321-1

Url de la publicación: https://doi.org/10.1038/s41598-020-67141-z

Autores/as

BENNIS, N.

ZOGRAFOPOULOS, D. C.

URRUCHI DEL POZO, VIRGINIA

LUIS RODRIGUEZ COBO

JAROSZEWICZ, L. R.

SÁNCHEZ PENA, JOSÉ MANUEL