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Title: Nano-fabricated pixelated micropolarizer array for visible imaging polarimetry

Pixelated micropolarizer array (PMA) is a novel concept for real-time visible imaging polarimetry. A 320 × 240 aluminum PMA fabricated by electron beam lithography is described in this paper. The period, duty ratio, and depth of the grating are 140 nm, 0.5, and 100 nm, respectively. The units are standard square structures and the metal nanowires of the grating are collimating and uniformly thick. The extinction ratio of 75 and the maximum polarization transmittance of 78.8% demonstrate that the PMA is suitable for polarization imaging. When the PMA is applied to real-time polarization imaging, the degree of linear polarization image and the angle of linear polarization image are calculated from a single frame image. The polarized target object is highlighted from the unpolarized background, and the surface contour of the target object can be reflected by the polarization angle.
Authors:
; ; ; ;  [1] ; ;  [2]
  1. CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027 (China)
  2. Nanofabrication Laboratory, National Center for Nanoscience and Technology, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
22305912
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRON BEAMS; GRATINGS; IMAGES; METALS; POLARIMETRY; POLARIZATION; POLARIZED TARGETS; QUANTUM WIRES; SURFACES