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39.4: Polarization‐Independent Switching With High Contrast from a Liquid Crystal Polarization Grating
Author(s) -
Escuti Michael J.,
Jones W. Michael
Publication year - 2006
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2433259
Subject(s) - liquid crystal , monochromatic color , optics , polarization (electrochemistry) , grating , high contrast , materials science , contrast (vision) , diffraction grating , diffraction efficiency , contrast ratio , diffraction , physics , optoelectronics , chemistry
We report experimental results of a liquid crystal polarization grating (LCPG) modulating unpolarized light with high contrast for the first time. Striking results are observed: nearly ideal diffraction into the first orders at > 99%, contrast ratios of up to 600:1 for monochromatic light, switching times of ∼ 2 ms for nematic LCs, and threshold voltage of 1.65 Vrms.