Diffusion lumineuse, Polarisation en milieu désordonné, Exaltations géantes, Métamatériaux thermiques

Myriam Zerrad 1
1 CONCEPT - CONCEPT
FRESNEL - Institut FRESNEL
Abstract : This paper presents the review of 10 years research in optics and photonics. The first part is devoted to the work led since my PhD thesis in 2007 in the field of light scattering in optical interferential coatings, with a focus on the fine metrology of low levels and the management of the optical multilayers problematics. These activities are now at the international state of art and the metrological and numerical tools developed in this context form an expertise platform known and supported by the numerous actors of space optics (industrials, space agencies and laboratories). From these studies of slight perturbative media, the activity naturally spread to disordered media for which metrological, numerical, phenomenological or theoretical tools were developed. Particularly, statistical optics concepts have been coupled with electromagnetic optics to analyse the polarimetric behavior of scattered speckle intensity. These tools allowed to highlight the phenomena of spatial depolarization (global) and temporal repolarization (local) and both were related to the weight of cross scattering coefficients. A review of this work is presented in Part II. Moreover, in the context of studies dealing with the optimization of optical microscopy contrast, new ideas have merged to answer to the problematic of enhancement of the electromagnetic field, without using any dissipative (plasmonic) structures. The work presented in the third part describes the different methods of synthesis implemented, based, for example, on the principle of zero admittance layers. These methods now make it possible to form tailored giant enhancements of several decades operating simultaneously on several wavelengths and angles of incidences. Finally, and more recently, in the continuity of these works, the admittances formalism, widely used in optical thin films, has been extended to the field of heat. This optical propagation / heat diffusion analogy, presented in part IV, led us to extend the techniques of space transformations to design thermal meta-materials which can create illusions (mimicking).
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Submitted on : Friday, January 5, 2018 - 7:12:05 PM
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Myriam Zerrad. Diffusion lumineuse, Polarisation en milieu désordonné, Exaltations géantes, Métamatériaux thermiques . Optique / photonique. Aix Marseille Université, 2017. ⟨tel-01676650⟩

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