Phase retrieval microscope for quantitative imaging of a weak phase object

Yohei Kamura, Shinichi Komatsu

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Optical phase retrieval using the iterative Fourier transform algorithm has long been believed inadequate for the quantitative imaging of weak phase objects, but in this letter it is shown to be greatly improved by introducing the preprocess of Fourier intensity data as well as by adopting a cooled charge coupled device (C-CCD) camera to record the data. The preprocess consists of the addition of multiple data, the sensitivity correction of the C-CCD camera, and the modification of the Fourier intensity data with a Wiener optimal filter. The phase distribution of a very weak phase object (maximum path difference of γ/32) is experimentally retrieved fairly well.

    Original languageEnglish
    Pages (from-to)6018-6019
    Number of pages2
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume37
    Issue number11
    Publication statusPublished - 1998 Nov

    Fingerprint

    CCD cameras
    retrieval
    charge coupled devices
    Microscopes
    cameras
    microscopes
    Imaging techniques
    Fourier transforms
    filters
    sensitivity

    Keywords

    • Image science
    • Information optics
    • Laser microscope
    • Optical measurements
    • Phase retrieval

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)
    • Engineering(all)

    Cite this

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    abstract = "Optical phase retrieval using the iterative Fourier transform algorithm has long been believed inadequate for the quantitative imaging of weak phase objects, but in this letter it is shown to be greatly improved by introducing the preprocess of Fourier intensity data as well as by adopting a cooled charge coupled device (C-CCD) camera to record the data. The preprocess consists of the addition of multiple data, the sensitivity correction of the C-CCD camera, and the modification of the Fourier intensity data with a Wiener optimal filter. The phase distribution of a very weak phase object (maximum path difference of γ/32) is experimentally retrieved fairly well.",
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    pages = "6018--6019",
    journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
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    T1 - Phase retrieval microscope for quantitative imaging of a weak phase object

    AU - Kamura, Yohei

    AU - Komatsu, Shinichi

    PY - 1998/11

    Y1 - 1998/11

    N2 - Optical phase retrieval using the iterative Fourier transform algorithm has long been believed inadequate for the quantitative imaging of weak phase objects, but in this letter it is shown to be greatly improved by introducing the preprocess of Fourier intensity data as well as by adopting a cooled charge coupled device (C-CCD) camera to record the data. The preprocess consists of the addition of multiple data, the sensitivity correction of the C-CCD camera, and the modification of the Fourier intensity data with a Wiener optimal filter. The phase distribution of a very weak phase object (maximum path difference of γ/32) is experimentally retrieved fairly well.

    AB - Optical phase retrieval using the iterative Fourier transform algorithm has long been believed inadequate for the quantitative imaging of weak phase objects, but in this letter it is shown to be greatly improved by introducing the preprocess of Fourier intensity data as well as by adopting a cooled charge coupled device (C-CCD) camera to record the data. The preprocess consists of the addition of multiple data, the sensitivity correction of the C-CCD camera, and the modification of the Fourier intensity data with a Wiener optimal filter. The phase distribution of a very weak phase object (maximum path difference of γ/32) is experimentally retrieved fairly well.

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    KW - Information optics

    KW - Laser microscope

    KW - Optical measurements

    KW - Phase retrieval

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    JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

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