Nonparaxial vector-field modeling of optical coherence tomography and interferometric synthetic aperture microscopy |
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Authors: | Davis Brynmor J Schlachter Simon C Marks Daniel L Ralston Tyler S Boppart Stephen A Carney P Scott |
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Affiliation: | Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, USA. bryn@uiuc.edu |
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Abstract: | A large-aperture, electromagnetic model for coherent microscopy is presented and the inverse scattering problem is solved. Approximations to the model are developed for near-focus and far-from-focus operations. These approximations result in an image-reconstruction algorithm consistent with interferometric synthetic aperture microscopy (ISAM): this validates ISAM processing of optical-coherence-tomography and optical-coherence-microscopy data in a vectorial setting. Numerical simulations confirm that diffraction-limited resolution can be achieved outside the focal plane and that depth of focus is limited only by measurement noise and/or detector dynamic range. Furthermore, the model presented is suitable for the quantitative study of polarimetric coherent microscopy systems operating within the first Born approximation. |
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