Multiwavelength surface contouring from phase-coded diffraction patterns

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    3 Citations (Scopus)
    6 Downloads (Pure)

    Abstract

    We propose a new algorithm for absolute phase retrieval from multiwavelength noisy phase coded diffraction patterns in the task of surface contouring. A lensless optical setup is considered with a set of successive single wavelength experiments. The phase masks are applied for modulation of the multiwavelength object wavefronts. The algorithm uses the forward and backward propagation for coherent light beams and sparsely encoding wavefronts which leads to the complex-domain block-matching 3D filtering. The key-element of the algorithm is an original aggregation of the multiwavelength object wavefronts for high-dynamic-range profile measurement. Numerical experiments demonstrate that the developed approach leads to the effective solutions explicitly using the sparsity for noise suppression and high-accuracy object profile reconstruction.

    Original languageEnglish
    Title of host publicationUnconventional Optical Imaging 2018. Strasbourg, France
    PublisherSPIE
    ISBN (Print)978-1-5106-1880-0
    DOIs
    Publication statusPublished - 1 Jan 2018
    Publication typeA4 Article in conference proceedings
    EventUnconventional Optical Imaging -
    Duration: 1 Jan 2000 → …

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume10677
    ISSN (Electronic)0277-786X

    Conference

    ConferenceUnconventional Optical Imaging
    Period1/01/00 → …

    Keywords

    • absolute phase retrieval
    • discrete optical signal processing
    • Multiwavelength phase retrieval
    • phase imaging
    • surface contouring

    Publication forum classification

    • Publication forum level 0

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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