Modeling and parameter retrieving in time domain spectroscopy of material and metamaterial

Romain Peretti; Martin Micica; Sergey Mitryukovskiy; Kevin Froberger; Sophie Eliet; Mathias Vanwolleghem; Jean-François Lampin

doi:10.1117/12.2306932

14 May 2018 Modeling and parameter retrieving in time domain spectroscopy of material and metamaterial

Romain Peretti, Martin Micica, Sergey Mitryukovskiy, Kevin Froberger, Sophie Eliet, Mathias Vanwolleghem, Jean-François Lampin

Author Affiliations +

Proceedings Volume 10684, Nonlinear Optics and its Applications 2018; 106840P (2018) https://doi.org/10.1117/12.2306932
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

In this proceeding, we present a software Fit@TDS that enables to retrieve the refractive index of a sample from a timedomain spectroscopy experiment. The software include commonly used methods where the refractive index is extracted from frequency domain data. This method has limitations when the signal is too noisy or when the absorption peak saturates the absorption. Thus, the software includes as well a new method where the refractive index are directly fitted using a model (the Drude-Lorentz for example) in the time domain. This method uses an optimization algorithm that retrieves the parameters of the model corresponding to the studied material. In this proceeding, we explain the methods and test them on fictitious samples to probe the feasibility and reliability of the proposed model.

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Romain Peretti, Martin Micica, Sergey Mitryukovskiy, Kevin Froberger, Sophie Eliet, Mathias Vanwolleghem, and Jean-François Lampin "Modeling and parameter retrieving in time domain spectroscopy of material and metamaterial ", Proc. SPIE 10684, Nonlinear Optics and its Applications 2018, 106840P (14 May 2018); https://doi.org/10.1117/12.2306932

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