Coded aperture structured illumination digital holographic microscopy for superresolution imaging

Xin Ji Lai, Han Yen Tu, Yu Chih Lin, Chau-Jern Cheng

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    This paper proposes a coded aperture structured illumination (CASI) technique in digital holographic microscopy (DHM). A CASI wave is generated using two binary phase codes (0° and 120°) for spatial phase shifting. The generated CASI wave then interferes with a reference wave to form a coded Fresnel hologram at a single exposure with compressive sensing (CS) to avoid the temporal phase-shifting process of the structured illumination (SI). The CS algorithm is applied to retrieve the missing data of decoded phase-shifted SI-modulated waves, which are used to separate overlapped spatial frequencies for obtaining a larger spatial frequency coverage to provide superresolution imaging. Two phase-only spatial light modulators are applied to generate a directional SI pattern for obtaining a coded aperture with a suitable size to perform one-shot acquisition in the DHM system.

    Original languageEnglish
    Pages (from-to)1143-1146
    Number of pages4
    JournalOptics Letters
    Volume43
    Issue number5
    DOIs
    Publication statusPublished - 2018 Mar 1

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    Lighting
    Microscopy
    apertures
    illumination
    microscopy
    light modulators
    shot
    acquisition
    Light

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Cite this

    Coded aperture structured illumination digital holographic microscopy for superresolution imaging. / Lai, Xin Ji; Tu, Han Yen; Lin, Yu Chih; Cheng, Chau-Jern.

    In: Optics Letters, Vol. 43, No. 5, 01.03.2018, p. 1143-1146.

    Research output: Contribution to journalArticle

    Lai, Xin Ji ; Tu, Han Yen ; Lin, Yu Chih ; Cheng, Chau-Jern. / Coded aperture structured illumination digital holographic microscopy for superresolution imaging. In: Optics Letters. 2018 ; Vol. 43, No. 5. pp. 1143-1146.
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