Title

Shape of Fano resonance line spectra calculated for silver nanorods

Authors

Authors

J. M. Reed; H. N. Wang; W. F. Hu;S. L. Zou

Comments

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Abbreviated Journal Title

Opt. Lett.

Keywords

NANOSTRUCTURES; SCATTERING; Optics

Abstract

Using theoretical tools, we numerically demonstrated Fano line shapes in the scattering spectra of silver rods resulting from different mechanisms. One of the Fano line shapes is due to the coupling of an in-plane quadrupole and a dipole mode in a single rod. Two nodes were observed at the resonance wavelength, each of which is located at a quarter of the rod length from the two ends. The Fano resonance is strengthened when the silver rod is cut at the two nodal positions. The second mechanism that gives rise to a new Fano resonance peak occurs when the symmetry of the rod is broken and is a result of the asymmetric coupling between the two excited dipoles. (C) 2011 Optical Society of America

Journal Title

Optics Letters

Volume

36

Issue/Number

22

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

4386

Last Page

4388

WOS Identifier

WOS:000297215300026

ISSN

0146-9592

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