Simulating the response of nanostructures under a focused beam

Paul Chevalier; Patrick Bouchon; Riad Haïdar; Fabrice Pardo

doi:10.1117/12.2052603

1 May 2014 Simulating the response of nanostructures under a focused beam

Paul Chevalier, Patrick Bouchon, Riad Haïdar, Fabrice Pardo

Proceedings Volume 9131, Optical Modelling and Design III; 913111 (2014) https://doi.org/10.1117/12.2052603
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

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.

Citation Download Citation

Paul Chevalier, Patrick Bouchon, Riad Haïdar, and Fabrice Pardo "Simulating the response of nanostructures under a focused beam", Proc. SPIE 9131, Optical Modelling and Design III, 913111 (1 May 2014); https://doi.org/10.1117/12.2052603

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