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Compact plasmonics lens based on nanoslit chain with gradually decreasing widths and separations
Author(s): Mehdi Afshari-Bavil; Mingli Dong; Chuanbo Li; Shuai Feng; Lianqing Zhu
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Paper Abstract

We have introduced a novel plasmonics planar slit lens, consisting of five slits with gradually decreasing widths and interspace distances. The cascading constant k to correlate the geometrical parameters with each other is proposed. At specific k values, light propagating through the slits is amplified and shows extraordinary transmission and focusing features beneath the metallic layer that we name it as the cascading effect. The focusing is due to the additional phase imposed on traveling light through the slits and their constructive interference. Numerical simulation Results show that the slit width should not be larger than half wavelength, and the cascading constant should be between 0.3 and 0.4.

Paper Details

Date Published: 25 October 2018
PDF: 6 pages
Proc. SPIE 10824, Plasmonics III, 1082403 (25 October 2018); doi: 10.1117/12.2326589
Show Author Affiliations
Mehdi Afshari-Bavil, Beijing Information Science & Technology Univ. (China)
Mingli Dong, Beijing Information Science & Technology Univ. (China)
Chuanbo Li, Minzu Univ. of China (China)
Shuai Feng, Minzu Univ. of China (China)
Lianqing Zhu, Beijing Information Science & Technology Univ. (China)


Published in SPIE Proceedings Vol. 10824:
Plasmonics III
Hongxing Xu; Satoshi Kawata; David J. Bergman, Editor(s)

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