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Proceedings Paper

Strong electric field enhancement in a gold/silica bow-tie nano-antenna
Author(s): Evgeny G. Mironov; Abdul Khaleque; Fardad Azarmi
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Paper Abstract

Bow-tie nano-antennas are the kind of plasmonic structures that are widely used in optical applications to obtain strong electric fields in a limited volume. Their capability to enhance the incident light can be greatly improved by constructing these structures from several alternating metal/dielectric layers. Following this approach, we introduce and then analyze the performance of a multilayered Au/SiO2 bow-tie nano-antenna in the finite-difference time-domain software. We show that the gold/silica thickness ratio of 50% leads to the improvement of the electric field enhancement on almost 50%, when compared to a monolithic gold device, which makes the proposed design attractive for various sensing applications.

Paper Details

Date Published: 18 April 2017
PDF: 5 pages
Proc. SPIE 10252, Optical Manipulation Conference, 1025217 (18 April 2017); doi: 10.1117/12.2269381
Show Author Affiliations
Evgeny G. Mironov, Skolkovo Institute of Science and Technology (Russian Federation)
Abdul Khaleque, UNSW Canberra (Australia)
Fardad Azarmi, Skolkovo Institute of Science and Technology (Russian Federation)
North Dakota State Univ. (United States)

Published in SPIE Proceedings Vol. 10252:
Optical Manipulation Conference
Takashige Omatsu, Editor(s)

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