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Optics Letters

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  • Vol. 36, Iss. 19 — Oct. 1, 2011
  • pp: 3882–3884

Fabrication of a mid-IR wire-grid polarizer by direct imprinting on chalcogenide glass

Itsunari Yamada, Naoto Yamashita, Kunihiko Tani, Toshihiko Einishi, Mitsunori Saito, Kouhei Fukumi, and Junji Nishii  »View Author Affiliations


Optics Letters, Vol. 36, Issue 19, pp. 3882-3884 (2011)
http://dx.doi.org/10.1364/OL.36.003882


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Abstract

A mid-IR wire-grid polarizer with a 500 nm pitch was fabricated on a low toxic chalcogenide glass (Sb-Ge-Sn-S system) by the thermal imprinting of periodic grating followed by the thermal evaporation of Al metal. After imprinting, deposition of Al on the grating at an oblique angle produced a wire-grid polarizer. The fabricated polarizer showed polarization with TM transmittance greater than 60% at 5 9 μm wavelengths and an extinction ratio greater than 20 dB at 3.5 11 μm wavelengths. This polarizer with a high extinction ratio can be fabricated more simply and less expensively than conventional IR polarizers.

© 2011 Optical Society of America

OCIS Codes
(230.4000) Optical devices : Microstructure fabrication
(230.5440) Optical devices : Polarization-selective devices
(260.3060) Physical optics : Infrared
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Optical Devices

History
Original Manuscript: August 11, 2011
Revised Manuscript: September 6, 2011
Manuscript Accepted: September 6, 2011
Published: September 27, 2011

Citation
Itsunari Yamada, Naoto Yamashita, Kunihiko Tani, Toshihiko Einishi, Mitsunori Saito, Kouhei Fukumi, and Junji Nishii, "Fabrication of a mid-IR wire-grid polarizer by direct imprinting on chalcogenide glass," Opt. Lett. 36, 3882-3884 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-19-3882


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