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Low-coherent optical diffraction tomography by angle-scanning illumination.

KyeoReh Lee1,2, Seungwoo Shin1,2, Zahid Yaqoob2

  • 1Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea.

Journal of Biophotonics
|January 1, 2019
PubMed
Summary
This summary is machine-generated.

Temporally low-coherent optical diffraction tomography (ODT) was developed using angle-scanning interferometry. This technique enables advanced 3D imaging of biological samples with enhanced optical sectioning capabilities.

Keywords:
coherent noiselow-coherentoptical diffraction tomographyquantitative phase imaging

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Area of Science:

  • Optics and Photonics
  • Biomedical Imaging
  • Cell Biology

Background:

  • Optical diffraction tomography (ODT) traditionally requires coherent illumination.
  • Limitations exist in current ODT methods, including assumptions about non-dispersion and restricted illumination angles.

Purpose of the Study:

  • To propose and demonstrate a novel temporally low-coherent optical diffraction tomography (ODT) system.
  • To review and develop ODT reconstruction principles for incoherent illumination.

Main Methods:

  • Utilized angle-scanning Mach-Zehnder interferometry with a digital micromirror device for diffractive tilting.
  • Maintained full-field interference of temporally incoherent light during angle scanning.
  • Developed and applied advanced reconstruction algorithms for low-coherent ODT.

Main Results:

  • Successfully demonstrated low-coherent ODT imaging of various samples.
  • Achieved imaging of plastic microspheres, human red blood cells, and rat pheochromocytoma cells.
  • Addressed and discussed limitations of incoherent illumination in ODT.

Conclusions:

  • The proposed temporally low-coherent ODT method is feasible and effective.
  • This technique offers potential for improved 3D imaging of biological specimens.
  • The study provides a foundation for further development in incoherent ODT.