Optical resonant Archimedean spiral antennas

Hanqing Wen; Jing Yang; Weiwei Zhang; Jiasen Zhang

doi:10.1117/1.3643270

1 January 2011 Optical resonant Archimedean spiral antennas

Hanqing Wen, Jing Yang, Weiwei Zhang, Jiasen Zhang

Author Affiliations +

Journal of Nanophotonics, Vol. 5, Issue 1, 053523 (January 2011). https://doi.org/10.1117/1.3643270

Abstract

We investigated the field enhancement properties of optical resonant Archimedean spiral antennas by using a finite difference time domain method. Due to the spiral structure, the antennas show a circular dichroism in the electric field enhancement, especially for a large turning angle. A large magnetic field enhancement is also obtained with a confinement in the nanometer size. When the turning angle equals π for a linearly polarized incident beam, the polarization of the enhanced field in the spiral antenna can be perpendicular to the incident polarization with a similar enhancement factor to the optical resonant dipole antennas.

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Hanqing Wen, Jing Yang, Weiwei Zhang, and Jiasen Zhang "Optical resonant Archimedean spiral antennas," Journal of Nanophotonics 5(1), 053523 (1 January 2011). https://doi.org/10.1117/1.3643270

Published: 1 January 2011

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