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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 12 — Jun. 15, 2014
  • pp: 3476–3479

Modal liquid crystal microaxicon array

José Francisco Algorri, Virginia Urruchi, Noureddine Bennis, and José Manuel Sánchez-Pena  »View Author Affiliations


Optics Letters, Vol. 39, Issue 12, pp. 3476-3479 (2014)
http://dx.doi.org/10.1364/OL.39.003476


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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 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.

© 2014 Optical Society of America

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(230.3990) Optical devices : Micro-optical devices
(240.0310) Optics at surfaces : Thin films

ToC Category:
Optical Devices

History
Original Manuscript: March 24, 2014
Revised Manuscript: May 10, 2014
Manuscript Accepted: May 11, 2014
Published: June 5, 2014

Citation
José Francisco Algorri, Virginia Urruchi, Noureddine Bennis, and José Manuel Sánchez-Pena, "Modal liquid crystal microaxicon array," Opt. Lett. 39, 3476-3479 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-12-3476


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