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Proceedings Paper

Excitation of topological insulator plasmons by two-dimensional periodic structure
Author(s): Xiao Feng Gu; Wei Bing Lu; Xiao Bing Li; Jian Wang; Jun Hu
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Paper Abstract

Plasmons induced by topological insulator (TI) Bi2Se3 micro-ribbon arrays have been experimentally observed recently (Nature nanotechnology 2013, 8, 556-560). In this letter, the surface plasmons excited by TI Bi2Se3 micro-disk arrays are investigated by the methods of full-wave numerical simulations. Numerical simulation results show that thin Bi2Se3 micro-disk arrays can support dipolar plasmon resonances in the terahertz (THz) regimes and the absorptions can be tuned by the structure parameters. In addition to the plasmon mode, two phonon-mode responses are also observed, which confirms the experimental results of micro-ribbon arrays. Our work further proves that TI can be a good candidate of plasmonic platform.

Paper Details

Date Published: 4 November 2014
PDF: 7 pages
Proc. SPIE 9273, Optoelectronic Imaging and Multimedia Technology III, 92733K (4 November 2014); doi: 10.1117/12.2071886
Show Author Affiliations
Xiao Feng Gu, Southeast Univ. (China)
Wei Bing Lu, Southeast Univ. (China)
Xiao Bing Li, Southeast Univ. (China)
Jian Wang, Southeast Univ. (China)
Jun Hu, Southeast Univ. (China)

Published in SPIE Proceedings Vol. 9273:
Optoelectronic Imaging and Multimedia Technology III
Qionghai Dai; Tsutomu Shimura, Editor(s)

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