Common-path multimodal three-dimensional fluorescence and phase imaging system

Manoj Kumar, Xiangyu Quan, Yasuhiro Awatsuji, Chaoyang Cheng, Mitsuyasu Hasebe, Yosuke Tamada, Osamu Matoba

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

A stable multimodal system is developed by combining two common-path digital holographic microscopes (DHMs): coherent and incoherent, for simultaneous recording and retrieval of three-dimensional (3-D) phase and 3-D fluorescence imaging (FI), respectively, of a biological specimen. The 3-D FI is realized by a single-shot common-path off-axis fluorescent DHM developed recently by our group. In addition, we accomplish, the phase imaging by another single-shot, highly stable common-path off-axis DHM based on a beam splitter. In this DHM configuration, a beam splitter is used to divide the incoming object beam into two beams. One beam serves as the object beam carrying the useful information of the object under study, whereas another beam is spatially filtered at its Fourier plane by using a pinhole and it serves as a reference beam. This DHM setup, owing to a common-path geometry, is less vibration-sensitive and compact, having a similar field of view but with high temporal phase stability in comparison to a two-beam Mach-Zehnder-type DHM. The performance of the proposed common-path DHM and the multimodal system is verified by conducting various experiments on fluorescent microspheres and fluorescent protein-labeled living cells of the moss <italic>Physcomitrella patens</italic>. Moreover, the potential capability of the proposed multimodal system for 3-D live fluorescence and phase imaging of the fluorescent beads is also demonstrated. The obtained experimental results corroborate the feasibility of the proposed multimodal system and indicate its potential applications for the analysis of functional and structural behaviors of a biological specimen and enhancement of the understanding of physiological mechanisms and various biological diseases.

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Original languageEnglish
Pages (from-to)1-15
Number of pages15
JournalJournal of Biomedical Optics
Volume25
Issue number3
DOIs
StatePublished - 1 Feb 2020
Externally publishedYes

Keywords

  • common-path configuration
  • digital holography
  • multimodal
  • three-dimensional fluorescence imaging
  • three-dimensional phase imaging

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering

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