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Proceedings Paper

Transmission characteristics of THz radiation through metal subwavelength holes array
Author(s): Yuan Han; Yueying Jiao; Cunlin Zhang
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Paper Abstract

When terahertz radiation irradiate to the surface of metal sub-wavelength holes array, there will be transmission peak at some frequency because of the surface plasmon resonant. This is the property of selecting transmission of metal sub-wavelength holes array. Many factors affect this property, such as the lattice constant of the array, dielectric of the medium, the thickness of the medium and so on. We mainly discuss the influence of the frequency and intensity of the transmission peak by the thickness of the medium. When the medium film is attached to both sides of the array, we found the changing of the thickness of the medium affect the frequency and intensity of the transmission peak: When the thickness of the medium is increasing, the frequency of the transmission peak becomes lower and the intensity decreases. We also found that when the film is thin (for example 54μm), the intensity of the transmission peak is greater than that of no medium film. This phenomenon shows that attaching thin film to both sides of the holes array will enhance the selecting transmission property.

Paper Details

Date Published: 6 February 2008
PDF: 7 pages
Proc. SPIE 6823, High-Power Lasers and Applications IV, 68230S (6 February 2008); doi: 10.1117/12.760124
Show Author Affiliations
Yuan Han, Capital Normal Univ. (China)
Yueying Jiao, Capital Normal Univ. (China)
Cunlin Zhang, Capital Normal Univ. (China)

Published in SPIE Proceedings Vol. 6823:
High-Power Lasers and Applications IV
Dianyuan Fan; Robert F. Walter, Editor(s)

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