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

Abstract

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 $m\pi (m=\text{integer})$.

© 2005 Optical Society of America

Polarization properties of inversely twisted nematic liquid-crystal gratings

Zhan He and Susumu Sato
Appl. Opt. 37(28) 6755-6763 (1998)

Twisted nematic liquid crystal polarization grating with the handedness conservation of a circularly polarized state

Michinori Honma and Toshiaki Nose
Opt. Express 20(16) 18449-18458 (2012)

Optical properties of holographically generated twisted nematic liquid-crystal gratings

Hyunhee Choi and J. W. Wu
J. Opt. Soc. Am. B 26(1) 1-9 (2009)

Switchable two-dimensional gratings based on field-induced layer undulations in cholesteric liquid crystals

B. I. Senyuk, I. I. Smalyukh, and O. D. Lavrentovich
Opt. Lett. 30(4) 349-351 (2005)

Polarization characteristics of diffracted beams from twisted nematic gratings fabricated by the photoalignment effect in dye-doped liquid-crystal films

Wei-Yen Wu, Ting-Shan Mo, and Andy Ying-Guey Fuh
J. Opt. Soc. Am. B 23(9) 1737-1742 (2006)