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Optics Letters

Optics Letters


  • Vol. 30, Iss. 15 — Aug. 1, 2005
  • pp: 1995–1997

Polarization-invariant grating based on a photoaligned liquid crystal in an oppositely twisted binary configuration

Chang-Jae Yu, Dong-Woo Kim, Jinyool Kim, and Sin-Doo Lee  »View Author Affiliations

Optics Letters, Vol. 30, Issue 15, pp. 1995-1997 (2005)

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We demonstrate a polarization-invariant liquid-crystal (LC) grating in an oppositely twisted and mutually orthogonal configuration. The polarization-invariant LC grating with high diffraction efficiency is fabricated using a single-masking process with two-step exposure of a linearly polarized ultraviolet light. It is found that the zeroth- and the first-order diffracted beams are linearly polarized and perpendicular to each other irrespective of the incident polarization for the phase retardation of m pi (m = integer).

© 2005 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(050.2770) Diffraction and gratings : Gratings
(230.3720) Optical devices : Liquid-crystal devices

Chang-Jae Yu, Dong-Woo Kim, Jinyool Kim, and Sin-Doo Lee, "Polarization-invariant grating based on a photoaligned liquid crystal in an oppositely twisted binary configuration," Opt. Lett. 30, 1995-1997 (2005)

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