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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 32 — Nov. 10, 2012
  • pp: 7739–7744

High-efficiency Fresnel lens fabricated by axially symmetric photoalignment method

Yao-Han Huang, Shih-Wei Ko, Shu-Chun Chu, and Andy Ying-Guey Fuh  »View Author Affiliations


Applied Optics, Vol. 51, Issue 32, pp. 7739-7744 (2012)
http://dx.doi.org/10.1364/AO.51.007739


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Abstract

In this study, a Fresnel lens with radial and azimuthal liquid crystal (LC) alignments in the odd and even zones was fabricated using the photoalignment technique based on an azo dye doped in LC cells. The lens has approximately 35% focusing efficiency as determined using a linearly polarized probe beam. In addition, the lens converts the input linear polarization into axially symmetrical polarization at the focal plane. The fabricated Fresnel lens is polarization-independent and has electrically controllable focusing efficiency. Moreover, the far-field pattern of a probe beam through the device placed between the polarizers agrees with the pattern obtained from the simulation.

© 2012 Optical Society of America

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(260.5430) Physical optics : Polarization

ToC Category:
Physical Optics

History
Original Manuscript: August 14, 2012
Revised Manuscript: October 12, 2012
Manuscript Accepted: October 14, 2012
Published: November 5, 2012

Citation
Yao-Han Huang, Shih-Wei Ko, Shu-Chun Chu, and Andy Ying-Guey Fuh, "High-efficiency Fresnel lens fabricated by axially symmetric photoalignment method," Appl. Opt. 51, 7739-7744 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-32-7739

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