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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 11 — Jun. 1, 2013
  • pp: 1775–1777

Switchable Fresnel lens based on micropatterned alignment

Xiao-Qian Wang, Abhishek K. Srivastava, Vladimir G. Chigrinov, and Hoi-Sing Kwok  »View Author Affiliations


Optics Letters, Vol. 38, Issue 11, pp. 1775-1777 (2013)
http://dx.doi.org/10.1364/OL.38.001775


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Abstract

In this Letter we disclose a method to fabricate a liquid crystal (LC) Fresnel zone lens (FZL) with higher efficiency. The LCFZL, based on alternate twisted nematic (TN) and planar aligned (PA) regions, has been prepared by means of a two-step photo-alignment process. The FZL profile for both optical regimes, i.e., in TN and PA alignment domains, generates the same focal length (f). Thus, the proposed LCFZL manifests double light intensity at the focal point and therefore offers double the efficiency of existing FZLs. Moreover, because of lower driving voltage and fast response, these elements could find application in many modern devices.

© 2013 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices
(250.6715) Optoelectronics : Switching

ToC Category:
Materials

History
Original Manuscript: December 5, 2012
Revised Manuscript: March 21, 2013
Manuscript Accepted: April 18, 2013
Published: May 20, 2013

Citation
Xiao-Qian Wang, Abhishek K. Srivastava, Vladimir G. Chigrinov, and Hoi-Sing Kwok, "Switchable Fresnel lens based on micropatterned alignment," Opt. Lett. 38, 1775-1777 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-11-1775


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