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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 15 — May. 20, 2011
  • pp: 2316–2321

Polarization-dependent circular Dammann grating made of azo-dye-doped liquid crystals

Dan Luo, Xiao Wei Sun, Hai Tao Dai, and Hilmi Volkan Demir  »View Author Affiliations


Applied Optics, Vol. 50, Issue 15, pp. 2316-2321 (2011)
http://dx.doi.org/10.1364/AO.50.002316


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Abstract

A polarization-dependent circular Dammann grating (CDG) was generated from an azo-dye-doped liquid crystal (LC) cell. A simple multiexposure photo-alignment process was used to fabricate a binary phase LC CDG zone plane, which was composed of an odd zone with a twisted nematic LC structure and an even zone with a homogenous LC structure. A two-order CDG with equal-intensity rings was produced through a Fourier transform. The maximum zeroth and first diffraction orders of obtained CDG can be separately achieved by rotating the analyzer’s polarization direction. The CDG using an azo- dye-doped LC cell can be used to generate diffractions by lasers in a broad wavelength range, hence expanding possible device applications.

© 2011 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(110.5220) Imaging systems : Photolithography
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

History
Original Manuscript: October 28, 2010
Revised Manuscript: March 2, 2011
Manuscript Accepted: March 30, 2011
Published: May 19, 2011

Citation
Dan Luo, Xiao Wei Sun, Hai Tao Dai, and Hilmi Volkan Demir, "Polarization-dependent circular Dammann grating made of azo-dye-doped liquid crystals," Appl. Opt. 50, 2316-2321 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-15-2316


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