Phase retrieval microscope for quantitative imaging of a weak phase object

Yohei Kamura*, Shinichi Komatsu

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)


    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
    Issue number11
    Publication statusPublished - 1998 Nov


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

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)
    • General Engineering


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