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Near-field Fourier transform polarimetry by use of a discrete space-variant subwavelength grating.

Authors
  • Biener, Gabriel1
  • Niv, Avi
  • Kleiner, Vladimir
  • Hasman, Erez
  • 1 Optical Engineering Laboratory, Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa, Israel 32000. , (Israel)
Type
Published Article
Journal
Journal of the Optical Society of America. A, Optics, image science, and vision
Publication Date
Oct 01, 2003
Volume
20
Issue
10
Pages
1940–1948
Identifiers
PMID: 14570107
Source
Medline
License
Unknown

Abstract

We present a unique method for real-time polarization measurement by use of a discrete space-variant subwavelength grating. The formation of the grating is done by discrete orientation of the local subwavelength grooves. The complete polarization analysis of the incident beam is determined by spatial Fourier transform of the near-field intensity distribution transmitted through the discrete subwavelength dielectric grating followed by a subwavelength metal polarizer. We discuss a theoretical analysis based on Stokes-Mueller formalism, as well as on Jones calculus, and experimentally demonstrate our approach with polarization measurements of infrared radiation at a wavelength of 10.6 microm.

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