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Proceedings Paper

Spectral properties of very deep zero-order metallic gratings with subwavelength slits at THz frequency region
Author(s): Zhen Tian; Qirong Xing; Dong Liang; Ning Zhang; Jianqiang Gu; Chai Lu; Qingyue Wang; Weili Zhang
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Paper Abstract

To study the reflection and transmission properties of the gratings, a novel system based on terahertz time domain spectroscopy was established. With this system, we have synchronously measured both the reflection and transmission spectra of the deep zero-order grating with subwavelength slits. In the experiments we found that the enhanced transmission spectra of the grating are complementary to the reflection spectra, which strongly depend on the geometry of the sample and the grating pose relative to the incident THz radiation, such as leaning from incident THz radiation and slits direction of the gratings out of p-polarized radiation. The experimental results agree with the theoretical analysis based on the surface plasmon polaritons and waveguide theory.

Paper Details

Date Published: 12 October 2006
PDF: 5 pages
Proc. SPIE 6373, Terahertz Physics, Devices, and Systems, 63730E (12 October 2006); doi: 10.1117/12.685718
Show Author Affiliations
Zhen Tian, Tianjin Univ. (China)
Qirong Xing, Tianjin Univ. (China)
Dong Liang, Tianjin Univ. (China)
Ning Zhang, Tianjin Univ. (China)
Jianqiang Gu, Tianjin Univ. (China)
Chai Lu, Tianjin Univ. (China)
Qingyue Wang, Tianjin Univ. (China)
Weili Zhang, Oklahoma State Univ. (United States)

Published in SPIE Proceedings Vol. 6373:
Terahertz Physics, Devices, and Systems
Mehdi Anwar; Anthony J. DeMaria; Michael S. Shur, Editor(s)

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