Synthetic aperture common-path digital holographic microscopy with spiral phase filter

Han Yen Tu, Wei Jen Hsiao, Xin Ji Lai, Yu Chih Lin, Chau Jern Cheng

    研究成果: 雜誌貢獻期刊論文同行評審

    3 引文 斯高帕斯(Scopus)

    摘要

    This paper describes a synthetic aperture common-path digital holographic microscopy through phase-shifting in a rotating spiral phase filter (SPF) to strengthen axial phase accuracy and fully utilize frequency coverage to improve of the spatial resolution. A phase-type liquid crystal on a silicon spatial light modulator was employed to generate an SPF on the Fourier plane of the digital holographic microscopy system. Subsequently, the scattering wave passing through the spiral phase plate and the reference wave generated through the center of phase plate as a spatial filter were used for the interference process, thereby completing the recording of the on-axis digital hologram. The common-path digital holographic microscopy system integrated with synthetic aperture imaging can be applied for Fresnel hologram recording and numerical focusing on objects without being affected by environmental vibration and coherence, thereby improving the spatial resolution and axial phase accuracy.

    原文英語
    文章編號065604
    期刊Journal of Optics (United Kingdom)
    19
    發行號6
    DOIs
    出版狀態已發佈 - 2017 六月

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics

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