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Theses

Approche matricielle de la tomographie à cohérence optique

Abstract : Interferometric techniques of microscopy display sensitivity to aberrations affecting both resolution and depth of imaging. Formerly introduced in astronomy, different methods of adaptive optics have been applied to microscopy in order to compensate for these effects. Most of them rely on the measurement of the wave front and on a close-loop correction of the aberrations using wave-front control devices. These methods are nevertheless limited by the rates of measurement and correction and can only compensate for low-order aberrations.The purpose of this thesis is to present an innovative matrix approach relying on the analysis of a new operator, the distorsion matrix, allowing to locally quantify the scattering and aberration parameters, and to compensate for the aberrations over the whole field of view. Besides, we introduce a mathematical formalism in order to describe the effects of aberrations in full-field OCT and we extend the scope of the matrix approach to very large fields of view thanks to an experimental setup of reflection matrix measurement inspired by this technique of imaging.
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  • HAL Id : tel-02631861, version 1

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Victor Barolle. Approche matricielle de la tomographie à cohérence optique. Physique [physics]. Université Paris sciences et lettres, 2019. Français. ⟨NNT : 2019PSLET012⟩. ⟨tel-02631861⟩

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