Multiwavelength surface contouring from phase-coded noisy diffraction patterns: Wavelength-division optical setup

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    3 Citations (Scopus)

    Abstract

    We propose an algorithm for absolute phase retrieval from multiwavelength noisy phase coded diffraction patterns. A lensless optical system is considered with a set of successive single wavelength experiments (wavelength-division setup). The phase masks are applied for modulation of the multiwavelength object wavefronts. The algorithm uses the forward/backward propagation for coherent light beams and sparsely encoding wavefronts, which leads to the complex-domain block-matching three-dimensional filtering. The key-element of the algorithm is an original aggregation of the multiwavelength object wavefronts for high-dynamic-range absolute phase reconstruction. Simulation tests demonstrate that the developed approach leads to the effective solutions explicitly using the sparsity for noise suppression and high-accuracy object absolute phase reconstruction from noisy data.

    Original languageEnglish
    Article number085105
    JournalOptical Engineering
    Volume57
    Issue number8
    DOIs
    Publication statusPublished - 1 Aug 2018
    Publication typeA1 Journal article-refereed

    Keywords

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

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • General Engineering

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