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Optics Letters

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  • Vol. 36, Iss. 8 — Apr. 15, 2011
  • pp: 1311–1313

Optically controllable and focus-tunable Fresnel lens in azo-dye-doped liquid crystals using a Sagnac interferometer

Hui-Chen Yeh, Yi-Chieh Kuo, Shih-Hung Lin, Jia-De Lin, Ting-Shan Mo, and Shuan-Yu Huang  »View Author Affiliations


Optics Letters, Vol. 36, Issue 8, pp. 1311-1313 (2011)
http://dx.doi.org/10.1364/OL.36.001311


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Abstract

This study demonstrates a tunable Fresnel lens in an azo-dye-doped liquid crystal (ADDLC) film using an interference technique. One Fresnel-patterned green beam using a Sagnac interferometer irradiated the UV-illuminated ADDLC cell, yielding a concentric zone plate distribution with homeotropic and isotropic structures in bright and dark regions of the green interference pattern. The proposed Fresnel lens is polarization independent, focus tunable, and the focusing efficiency of the device can be optically controlled.

© 2011 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(090.2880) Holography : Holographic interferometry
(160.3710) Materials : Liquid crystals
(230.1150) Optical devices : All-optical devices

ToC Category:
Materials

History
Original Manuscript: February 4, 2011
Manuscript Accepted: March 1, 2011
Published: April 5, 2011

Citation
Hui-Chen Yeh, Yi-Chieh Kuo, Shih-Hung Lin, Jia-De Lin, Ting-Shan Mo, and Shuan-Yu Huang, "Optically controllable and focus-tunable Fresnel lens in azo-dye-doped liquid crystals using a Sagnac interferometer," Opt. Lett. 36, 1311-1313 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-8-1311


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