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arXiv · 1711.02498

Application of the coupled classical oscillators model to the Fano resonance build-up in a plasmonic nanosystem

P. A. Golovinski·A. V. Yakovets·E. S. Khramov
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Abstract

We study the excitation dynamics of Fano resonance within the classical model framework of two linear coupled oscillators. An exact solution for the model with a damped harmonic force is obtained. The details of growth a Fano profile under the harmonic excitation is shown. For incident ultra-wideband pulse, the reaction of a system becomes universal and coincides with the time-dependent response function. The results of numerical calculations clarify two alternative ways for experimental measurement of the complete characteristics of a system: direct observation of the system response to a monochromatic force by frequency scanning or recording of time-dependent response to the delta-pulse. As a specific example, time-dependent excitation in a system consisting of a quantum dot and a metal nanoparticle is calculated. Then it is shown the applicability of the extended model of damped oscillators with radiative correction to describe the build-up a plasmon Fano resonance in a scattering of a femtosecond laser pulse by nanoantenna.

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P. A. Golovinski, A. V. Yakovets, E. S. Khramov. 2017-11-07. Application of the coupled classical oscillators model to the Fano resonance build-up in a plasmonic nanosystem. https://arxiv.org/abs/1711.02498

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