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Liquid-crystal micropolarimeter array for visible linear and circular polarization imaging

Authors Zhao, X. HKUST affiliated (currently or previously)
Bermak, Amine View this author's profile
Boussaid, F.
Chigrinov, Vladimir G. View this author's profile
Issue Date 2010
Source ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems , 2010, p. 637-640
Summary In this paper, we propose a liquid-crystal micropolarimeter (LCMP) array with high spatial resolution for real-time linear and circular polarization imaging in visible spectrum. LCMPs for extracting 0°, 90° linearly and right-handed circularly polarized components of incident light are implemented by micro-patterning a liquid crystal (LC) layer on top of a 45° oriented ultra-thin metal-wire-grid polarizer (MWGP). A compact LCMP pitch of 5μmx5μm is achieved with sulfonic-dye-1 (SD1) as the LC alignment material. In addition, these micron-scale LCMPs feature ∼ 5μm overall thickness and ∼1100 extinction ratio. Reported experimental results validate the concept of real-time linear and circular polarization image sensing and processing with targets illuminated by collimated artificial light. ©2010 IEEE.
ISSN 0271-4302
ISBN 978-1-4244-5309-2
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Language English
Format Conference paper
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