Single-shot and phase-shifting digital holographic microscopy using a 2-D grating

Taeseok Daniel Yang, Hyung Jin Kim, Kyoung J. Lee, Beop Min Kim, Youngwoon Choi

    Research output: Contribution to journalArticlepeer-review

    42 Citations (Scopus)

    Abstract

    We demonstrate digital holographic microscopy that, while being based on phase-shifting interferometry, is capable of single-shot measurements. A two-dimensional (2-D) diffraction grating placed in a Fourier plane of a standard in-line holographic phase microscope generates multiple copies of a sample image on a camera sensor. The identical image copies are spatially separated with different overall phase shifts according to the diffraction orders. The overall phase shifts are adjusted by controlling the lateral position of the grating. These phase shifts are then set to be multiples of π/2. Interferograms composed of four image copies combined with a parallel reference beam are acquired in a single shot. The interferograms are processed through a phase-shifting algorithm to produce a single complex image. By taking advantage of the higher sampling capacity of the in-line holography, we can increase the imaging information density by a factor of 3 without compromising the imaging acquisition speed.

    Original languageEnglish
    Pages (from-to)9480-9488
    Number of pages9
    JournalOptics Express
    Volume24
    Issue number9
    DOIs
    Publication statusPublished - 2016 May 2

    Bibliographical note

    Publisher Copyright:
    ©2016 Optical Society of America.

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Fingerprint

    Dive into the research topics of 'Single-shot and phase-shifting digital holographic microscopy using a 2-D grating'. Together they form a unique fingerprint.

    Cite this