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Algorri Genaro, José Francisco and Urruchi del Pozo, Virginia and Bennis, Noureddine and Sánchez Pena, José Manuel (2014). Modal liquid crystal microaxicon array. "Optics Letters", v. 39 (n. 12); pp. 3476-3479. ISSN 0146-9592. https://doi.org/10.1364/OL.39.003476.
Title: | Modal liquid crystal microaxicon array |
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Author/s: |
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Item Type: | Article |
Título de Revista/Publicación: | Optics Letters |
Date: | June 2014 |
ISSN: | 0146-9592 |
Volume: | 39 |
Subjects: | |
Faculty: | E.T.S.I. Telecomunicación (UPM) |
Department: | Tecnología Fotónica y Bioingeniería |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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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 12π to 24π 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 λ∕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.
Item ID: | 37453 |
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DC Identifier: | https://oa.upm.es/37453/ |
OAI Identifier: | oai:oa.upm.es:37453 |
DOI: | 10.1364/OL.39.003476 |
Official URL: | https://www.osapublishing.org/ol/abstract.cfm?uri=... |
Deposited by: | Memoria Investigacion |
Deposited on: | 12 Sep 2015 08:17 |
Last Modified: | 01 Feb 2023 12:12 |