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Proceedings Paper

Simulating the response of nanostructures under a focused beam
Author(s): Paul Chevalier; Patrick Bouchon; Riad Haïdar; Fabrice Pardo
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Paper Abstract

Focusing the light onto nanostructures thanks to spherical lenses is a first step to enhance the field, and is widely used in applications needing strong light matter interactions. Nonetheless, the electromagnetic response of such nanostructures, which have subwavelength patterns, to a focused beam can not be described by classical optics. Here, we describe a formalism to efficiently compute the behavior of nanostructures under a focused beam based on an apodized decomposition on plane waves. Besides, each computation of a plane wave is done on only one period thanks to a conical B-spline modal method. Various examples illustrating the focusing are detailed, and in particular the possibility to move the focal spot and to tilt the focus beam.

Paper Details

Date Published: 1 May 2014
PDF: 8 pages
Proc. SPIE 9131, Optical Modelling and Design III, 913111 (1 May 2014); doi: 10.1117/12.2052603
Show Author Affiliations
Paul Chevalier, Lab. de Photonique et de Nanostructures, CNRS (France)
ONERA (France)
Patrick Bouchon, ONERA (France)
Riad Haïdar, ONERA (France)
Ecole Polytechnique (France)
Fabrice Pardo, Lab. de Photonique et de Nanostructures, CNRS (France)

Published in SPIE Proceedings Vol. 9131:
Optical Modelling and Design III
Frank Wyrowski; John T. Sheridan; Jani Tervo; Youri Meuret, Editor(s)

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