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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 4 — Feb. 15, 2011
  • pp: 502–504

Polarization-independent and high-diffraction-efficiency Fresnel lenses based on blue phase liquid crystals

Chi-Huang Lin, Yu-Yin Wang, and Cheng-Wei Hsieh  »View Author Affiliations


Optics Letters, Vol. 36, Issue 4, pp. 502-504 (2011)
http://dx.doi.org/10.1364/OL.36.000502


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Abstract

A polarization-independent and high-diffraction-efficiency Fresnel lens is developed based on blue phase liquid crystals (BPLCs). The optically isotropic characteristic of BPLCs is used to produce a polarization-independent Fresnel lens. The small optical phase shift of BPLCs that is induced by the Kerr effect is sufficient for the BPLC Fresnel lens to have high theoretical and experimental diffraction efficiencies of 41% and 34 % , respectively. An electrically erasable memory effect in the focusing diffraction at an electric field E > 4.44 V / μm is observed. The electro-optical properties of the BPLC Fresnel lens are analyzed and discussed.

© 2011 Optical Society of America

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(050.1965) Diffraction and gratings : Diffractive lenses

ToC Category:
Diffraction and Gratings

History
Original Manuscript: September 15, 2010
Revised Manuscript: December 12, 2010
Manuscript Accepted: January 1, 2011
Published: February 8, 2011

Citation
Chi-Huang Lin, Yu-Yin Wang, and Cheng-Wei Hsieh, "Polarization-independent and high-diffraction-efficiency Fresnel lenses based on blue phase liquid crystals," Opt. Lett. 36, 502-504 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-4-502


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