Centre National De La Recherche Scientifique

Université De Lille

Centrale Lille Institut

Junia

Universite Polytechnique Haute-de-france

Université Des Sciences Et Technologies De Lille

Ecole Centrale De Lille

Université Polytechnique Hauts-De-France

Yncrea Hauts De France

Romain Peretti

A method for determining a set of physical parameters of a sample, comprising the steps of: —A Retrieving a measured sample temporal trace Es(t), —B retrieving a measured reference temporal trace Eref(t), —C determining an widened reference temporal trace, called Eref0(t), and determining a discrete Fourier transform {hacek over (E)}(ω) of the widened reference temporal trace—D determining a modeling of an impulse response of the sample in the frequency domain, depending on the set of physical parameters (pi), called sample frequency model {hacek over (E)}{Pi}(ω), from the Fourier Transform of the widened reference temporal trace {hacek over (E)}(ω) and a physical behavior model of the sample, —E applying an optimization algorithm on the set of physical parameters (pi) comprising the sub steps of: —Einitializing physical parameters (pi), —realizing iteratively the sub steps of: —Ecalculating an inverse discrete Fourier transform of the sample frequency model {hacek over (E)}{Pi}(ω), called estimated sample temporal trace E{Pi}(t), —Ecalculating an error function (ε{pi}), until obtaining a set of values (pi) of physical parameters minimizing said error function.

Super resolution time domain spectroscopy method and device for sample characterization

Growing community of inventors

VILLENEUVE D'ASCQ, France

Romain Peretti