Buscar

Estamos realizando la búsqueda. Por favor, espere...

Modal liquid crystal microaxicon array

Abstract: A novel tunable liquid crystal microaxicon array is proposed and experimentally demonstrated. The proposed structure is capable of generating tunable axicons (thousands of elements) of micrometric size, with simple control (four control voltages) and low voltage, and is totally reconfigurable. Depending on the applied voltages, control over the diameter, as well as the effective wedge angle, can be achieved. Controls over the diameter ranging from 107 to 77 µm have been demonstrated. In addition, a control over the phase profile tunability, from 12?[pi] to 24[pi] radians, has been demonstrated. This result modifies the effective cone angle. The diameter tunability, as well the effective cone angle, results in a control over the nondiffractive Bessel beam distance. The RMS wavefront deviation from the ideal axicon is only [lambda]/3. The proposed device has several advantages over the existing microaxicon arrays, including being simple having a low cost. The device could contribute to developing new applications and to reducing the fabrication costs of current devices.

 Fuente: Optics letters, 2014, 39(12), 3476-3479

 Editorial: Optica Publishing Group

 Fecha de publicación: 15/06/2014

 Nº de páginas: 4

 Tipo de publicación: Artículo de Revista

 DOI: 10.1364/OL.39.003476

 ISSN: 0146-9592,1539-4794,1071-2763

 Proyecto español: TEC2009-13991-C02-01

 Url de la publicación: https://doi.org/10.1364/OL.39.003476

Autoría

URRUCHI DEL POZO, VIRGINIA

BENNIS, NOUREDDINE

JOSE MANUEL SANCHEZ PENA