High-resolution thin "guest-host" micropolarizer arrays for visible imaging polarimetry

Xiaojin Zhao, Farid Boussaid, Amine Bermak, Vladimir G. Chigrinov

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We report a micropolarizer array technology exploiting "guest- host" interactions in liquid crystals for visible imaging polarimetry. We demonstrate high resolution thin micropolarizer arrays with a 5 μm × 5 μm pixel pitch and a thickness of 0.95 μm. With the "host" nematic liquid crystal molecules photo-aligned by sulfonic azo-dye SD1, we report averaged major principal transmittance, polarization efficiency and order parameter of 80.3%, 0.863 and 0.848, respectively across the 400 nm - 700 nm visible spectrum range. The proposed fabrication technology completely removes the need for any selective etching during the fabrication/integration process of the micropolarizer array. Fully CMOS compatible, it is simple and cost-effective, requiring only spin-coating followed by a single ultraviolet-exposure through a "photoalignment master". This makes it well suited to low cost polarization imaging applications.

Original languageEnglish
Pages (from-to)5565-5573
Number of pages9
JournalOptics Express
Volume19
Issue number6
DOIs
Publication statusPublished - 14 Mar 2011
Externally publishedYes

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polarimetry
high resolution
liquid crystals
fabrication
polarization
visible spectrum
coating
transmittance
CMOS
dyes
pixels
etching
costs
molecules
interactions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

High-resolution thin "guest-host" micropolarizer arrays for visible imaging polarimetry. / Zhao, Xiaojin; Boussaid, Farid; Bermak, Amine; Chigrinov, Vladimir G.

In: Optics Express, Vol. 19, No. 6, 14.03.2011, p. 5565-5573.

Research output: Contribution to journalArticle

Zhao, Xiaojin ; Boussaid, Farid ; Bermak, Amine ; Chigrinov, Vladimir G. / High-resolution thin "guest-host" micropolarizer arrays for visible imaging polarimetry. In: Optics Express. 2011 ; Vol. 19, No. 6. pp. 5565-5573.
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