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Proceedings Paper

Giant optical activity in quasi-2D planar nanostructures
Author(s): Makoto Kuwata-Gonokami; Nobuyoshi Saito; Yusuke Ino; Kuniaki Konishi; Martti Kauranen; Konstantins Jefimovs; Tuomas Vallius; Jari Turunen; Yuri P. Svirko
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Paper Abstract

Planar chirality can lead to interesting polarization effects whose interpretation has invoked possible violation of reciprocity and time reversality. We show that a quasi-two-dimensional array consisting of gold nanoparticles with no symmetry plane and having sub-wavelength periodicity and thickness exhibits giant specific rotation (~104 °/mm) at normal incidence. The rotation is the same for light incident on the front and back sides of the sample. Such reciprocity manifests three-dimensionality of the structure arising from the asymmetry of light-plasmon coupling at the air-metal and substrate-metal interfaces of the structure. The structures thus enable nanoscale polarization control but violate no symmetry principle.

Paper Details

Date Published: 23 January 2006
PDF: 9 pages
Proc. SPIE 6110, Micromachining Technology for Micro-Optics and Nano-Optics IV, 61100G (23 January 2006); doi: 10.1117/12.644491
Show Author Affiliations
Makoto Kuwata-Gonokami, The Univ. of Tokyo (Japan)
Nobuyoshi Saito, The Univ. of Tokyo (Japan)
Yusuke Ino, The Univ. of Tokyo (Japan)
Kuniaki Konishi, The Univ. of Tokyo (Japan)
Martti Kauranen, Tampere Univ. of Technology (Finland)
Konstantins Jefimovs, Univ. of Joensuu (Finland)
Tuomas Vallius, Univ. of Joensuu (Finland)
Jari Turunen, Univ. of Joensuu (Finland)
Yuri P. Svirko, Univ. of Joensuu (Finland)

Published in SPIE Proceedings Vol. 6110:
Micromachining Technology for Micro-Optics and Nano-Optics IV
Eric G. Johnson; Gregory P. Nordin; Thomas J. Suleski, Editor(s)

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