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Proceedings Paper

Enhanced terahertz transmission by surface plasmon resonance
Author(s): Yongzheng Wen; Jiancheng Yang; Xiaomei Yu; Yuejin Zhao; Xiaohua Liu; Liquan Dong
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Paper Abstract

The surface plasmon resonance (SPR) between metal and dielectric material has a good enhancement on electromagnetic wave transmission. In this paper, a series of two-dimension (2D) metal gratings and spiral structures with different geometrical size were experimentally tested by Terahertz time-domain spectroscopy (THz-TDS). The experiment results show that the 2D metal gratings have almost 70% increment on terahertz transmission than the pure silicon substrate in the range of 0.2-2.5THz, which indicates a strong coupling in the terahertz range, and the resonance mode shows a blue shift. On the other hand, the influence of different radiation directions was analyzed. It presents that the slightly higher transmission can be achieved when terahertz wave radiate from the front side than the back side. It reveals that surface plasmon resonance can enhance the terahertz transmission efficiently and has potential applications in security imaging, biological analysis and spectroscopy.

Paper Details

Date Published: 15 February 2012
PDF: 7 pages
Proc. SPIE 8250, Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS and Nanodevices XI, 82500L (15 February 2012); doi: 10.1117/12.918232
Show Author Affiliations
Yongzheng Wen, Peking Univ. (China)
Jiancheng Yang, Peking Univ. (China)
Xiaomei Yu, Peking Univ. (China)
Yuejin Zhao, Beijing Institute of Technology (China)
Xiaohua Liu, Beijing Institute of Technology (China)
Liquan Dong, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 8250:
Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS and Nanodevices XI
Sonia M. García-Blanco; Rajeshuni Ramesham, Editor(s)

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