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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 11 — Apr. 10, 2010
  • pp: 2066–2071

Double-grating polarizer for terahertz radiation with high extinction ratio

Lin Sun, Zhi-Hui Lv, Wei Wu, Wei-Tao Liu, and Jian-Min Yuan  »View Author Affiliations


Applied Optics, Vol. 49, Issue 11, pp. 2066-2071 (2010)
http://dx.doi.org/10.1364/AO.49.002066


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Abstract

We propose a layout of a high extinction ratio polarizer in the terahertz (THz) domain. This polarizer is composed of two dense metal wire gratings separated in parallel, of which the grating constant is much smaller than the incident wavelength. Numerical analysis shows that, in the range of 0.3 THz 3 THz , the transmission of TM wave through this polarizer is higher than 97% and the extinction ratio achieved is about 180 dB —much higher than the conventional wire-grid polarizer.

© 2010 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.2230) Diffraction and gratings : Fabry-Perot

ToC Category:
Diffraction and Gratings

History
Original Manuscript: December 8, 2009
Revised Manuscript: February 12, 2010
Manuscript Accepted: March 15, 2010
Published: April 2, 2010

Citation
Lin Sun, Zhi-Hui Lv, Wei Wu, Wei-Tao Liu, and Jian-Min Yuan, "Double-grating polarizer for terahertz radiation with high extinction ratio," Appl. Opt. 49, 2066-2071 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-11-2066

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