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Scattering spot imaging for the determination of optical and dynamical properties of viscoelastic media

The non-contact evaluation of dynamical properties of media presents several medical, biological, and industrial applications. Diverse optical methods, operating at different scales with various targeted applications, are currently being considered as alternatives to traditional mechanical testing d...

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Bibliographic Details
Published in:Optics communications 2019-05, Vol.439, p.270-275
Main Authors: Abou Nader, Christelle, Tualle, Jean-Michel, Tinet, Eric, Ettori, Dominique
Format: Article
Language:English
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Summary:The non-contact evaluation of dynamical properties of media presents several medical, biological, and industrial applications. Diverse optical methods, operating at different scales with various targeted applications, are currently being considered as alternatives to traditional mechanical testing devices. However, the accuracy of most optical techniques upon multiple scattering is compromised by the influence of the medium’s optical properties, namely scattering and absorption. Therefore, in order to accurately estimate dynamical properties, that are related to mechanical features, it is of pivotal importance to determine the medium’s optical properties. In this paper, we present a new simple scheme for the assessment of optical as well as dynamical properties of viscoelastic media. We demonstrate, for the first time, the possibility of estimating absorption, scattering, and dynamical properties using scattering spot imaging with a standard CCD camera at multiple exposure times and with a monochromatic continuous wave (CW) illuminance.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2019.01.079