Frontiers in Physics (Jan 2021)

Transmission Structured Illumination Microscopy for Quantitative Phase and Scattering Imaging

  • Kai Wen,
  • Ying Ma,
  • Min Liu,
  • Jianlang Li,
  • Zeev Zalevsky,
  • Juanjuan Zheng

DOI
https://doi.org/10.3389/fphy.2020.630350
Journal volume & issue
Vol. 8

Abstract

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In this paper, we demonstrate a digital micromirror device (DMD) based optical microscopic apparatus for quantitative differential phase contrast (qDIC) imaging, coherent structured illumination microscopy (SIM), and dual-modality (scattering/fluorescent) imaging. For both the qDIC imaging and the coherent SIM, two sets of fringe patterns with orthogonal orientations and five phase-shifts for each orientation, are generated by a DMD and projected on a sample. A CCD camera records the generated images in a defocusing manner for qDIC and an in-focus manner for coherent SIM. Both quantitative phase images and super-resolved scattering/fluorescence images can be reconstructed from the recorded intensity images. Moreover, fluorescent imaging modality is integrated, providing specific biochemical structures of the sample once using fluorescent labeling.

Keywords