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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 12 — Jun. 17, 2013
  • pp: 13998–14007

Infrared polarizer employing multiple metal-film subwavelength gratings

Kazuo Shiraishi and Hidehiko Yoda  »View Author Affiliations

Optics Express, Vol. 21, Issue 12, pp. 13998-14007 (2013)

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A multiple thin metal-film subwavelength grating is proposed for polarizers in the infrared wavelength region of 10–20 μm. The dependence of the transmission characteristics of the polarizers on structural parameters was obtained numerically, and the potential for high performance was confirmed experimentally. The measured TE-wave losses in a polarizer comprising a triangular triple Al-film grating are more than 45 and 35 dB for the wavelength ranges of 10–16 and 16–20 μm, respectively, while the net TM-wave losses are lower than 1.5 dB in the wavelength rage of 15–20 μm.

© 2013 OSA

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.5440) Optical devices : Polarization-selective devices
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Optical Devices

Original Manuscript: April 3, 2013
Revised Manuscript: May 26, 2013
Manuscript Accepted: May 29, 2013
Published: June 4, 2013

Kazuo Shiraishi and Hidehiko Yoda, "Infrared polarizer employing multiple metal-film subwavelength gratings," Opt. Express 21, 13998-14007 (2013)

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