Information content of speckle patterns for optical imaging inside scattering materials

D.F. Bouchet, A.P. Mosk

Research output: Contribution to conferencePosterAcademic

Abstract

Imaging inside a strongly scattering medium is a challenging task due to light absorption and scattering, respectively lowering the collected intensity and shuffling its spatial distribution. A fundamental question arise: what is the amount of information theoretically enclosed in the light escaping complex media? We propose to answer this question with a model based on a set of sub-wavelength particles, which are described by their position and their
polarizability. The amount of information enclosed in the scattered light about the position of the particles can be formally assessed using the Fisher information, a concept which is widely used to study the localization precision in single-molecule localization microscopy. Using the coupled dipole method, we numerically study the parameters driving the Fisher information in a disordered scattering media illuminated by a coherent light source. We notably make the connection between the Fisher information and the number of degrees of
freedom in the measured images. Moreover, we investigate the large variance observed in the multiple scattering regime, which originates not only from intrinsic properties of the medium but also from the optical modes which are excited. This work paves the way toward the implementation of efficient strategies to achieve information-driven imaging in the multiple scattering regime.
Original languageEnglish
Publication statusPublished - 12 Dec 2018
EventC'Nano 2018: The Nanoscience Meeting - Palais des Congrès Neptune, Toulon, France
Duration: 11 Dec 201813 Dec 2018
https://cnano2018.sciencesconf.org

Conference

ConferenceC'Nano 2018
Country/TerritoryFrance
CityToulon
Period11/12/1813/12/18
Internet address

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