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Polarization and mutual coupling effects in aluminum nanoantenna arrays

Dorh, N.; Stokes, J.; Cryan, M. J.

Authors

N. Dorh

J. Stokes

M. J. Cryan



Abstract

This paper uses finite-difference time-domain modeling to study the impact of varying the polarization of the point source(s) on both a single aluminum dipole nanoantenna and a 2×2 array. Starting with the single dipole nanoantenna, this paper demonstrates the strong dependence of power enhancement and resonance on the polarization of the source by alternating between orthogonal polarization states. With each element of the array excited by a single point source, the resonance, power enhancement, and far-field radiation patterns are observed as the polarization of each source is rotated, in varying combinations. The results demonstrate that a unique far-field radiation pattern is produced for each polarization combination, which may lead to applications in subdiffraction limit imaging and quantum optics.

Journal Article Type Article
Publication Date Apr 1, 2015
Journal Journal of the Optical Society of America B
Print ISSN 0740-3224
Electronic ISSN 1520-8540
Publisher Optical Society of America
Peer Reviewed Peer Reviewed
Volume 32
Issue 4
Pages 721-729
APA6 Citation Dorh, N., Stokes, J., & Cryan, M. J. (2015). Polarization and mutual coupling effects in aluminum nanoantenna arrays. Journal of the Optical Society of America B, 32(4), 721-729. doi:10.1364/JOSAB.32.000721
DOI https://doi.org/10.1364/JOSAB.32.000721
Publisher URL https://www.osapublishing.org/josab/abstract.cfm?uri=josab-32-4-721
Related Public URLs https://research-information.bristol.ac.uk/en/publications/polarization-and-mutual-coupling-effects-in-aluminum-nanoantenna-arrays(2e2c7376-c952-4c8c-9907-c784ea13ccb5).html
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