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Related Concept Videos

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Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects
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Fundamental precision bounds for three-dimensional optical localization microscopy using self-interference digital

Abhijit Marar1, Peter Kner1

  • 1School of Electrical and Computer Engineering, University of Georgia, Athens, Georgia 30602, USA.

Biomedical Optics Express
|February 1, 2021
PubMed
Summary
This summary is machine-generated.

Self-interference digital holography (SIDH) offers precise 3D localization for point sources. SIDH shows superior precision in high signal conditions, while point spread function models excel in low signal environments.

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Area of Science:

  • Optical microscopy
  • Holography
  • Nanotechnology

Background:

  • Self-interference digital holography (SIDH) enables 3D localization of point sources with nanometer precision.
  • Understanding the theoretical limits of SIDH is crucial for optimizing its performance.

Purpose of the Study:

  • To calculate the theoretical localization precision limits for two SIDH configurations.
  • To compare SIDH precision with 3D single-molecule localization precision from various Point Spread Functions (PSFs).

Main Methods:

  • Theoretical calculation of localization precision for SIDH using plane/spherical and two spherical wave configurations.
  • Comparison of SIDH precision bounds with PSF-based localization precision.

Main Results:

  • SIDH maintains consistent 3D localization precision across a 20 µm depth of field.
  • SIDH achieves higher average localization precision than PSFs at high signal-to-background ratios (SBR).
  • At low SBR, PSF models outperform SIDH due to hologram size limitations on the detector.

Conclusions:

  • SIDH is a powerful technique for high-precision 3D localization, particularly in high SBR conditions.
  • The choice between SIDH and PSF models depends on the signal-to-background ratio and specific application requirements.