Giant optical activity in quasi-2D planar nanostructures

Makoto Kuwata-Gonokami; Nobuyoshi Saito; Yusuke Ino; Kuniaki Konishi; Martti Kauranen; Konstantins Jefimovs; Tuomas Vallius; Jari Turunen; Yuri P. Svirko

doi:10.1117/12.644491

23 January 2006 Giant optical activity in quasi-2D planar nanostructures

Makoto Kuwata-Gonokami, Nobuyoshi Saito, Yusuke Ino, Kuniaki Konishi, Martti Kauranen, Konstantins Jefimovs, Tuomas Vallius, Jari Turunen, Yuri P. Svirko

Author Affiliations +

Proceedings Volume 6110, Micromachining Technology for Micro-Optics and Nano-Optics IV; 61100G (2006) https://doi.org/10.1117/12.644491
Event: MOEMS-MEMS 2006 Micro and Nanofabrication, 2006, San Jose, California, United States

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.

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Makoto Kuwata-Gonokami, Nobuyoshi Saito, Yusuke Ino, Kuniaki Konishi, Martti Kauranen, Konstantins Jefimovs, Tuomas Vallius, Jari Turunen, and Yuri P. Svirko "Giant optical activity in quasi-2D planar nanostructures", Proc. SPIE 6110, Micromachining Technology for Micro-Optics and Nano-Optics IV, 61100G (23 January 2006); https://doi.org/10.1117/12.644491

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