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Automated alignment method for coherence-controlled holographic microscope

Zbynek Dostal1,2, Thomas Slaby3, Lukas Kvasnica2,3

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Summary
This summary is machine-generated.

A new coherence-controlled holographic microscope (CCHM) enables precise live cell imaging. An automated alignment system corrects for misalignment, enhancing performance for biological studies, including cancer cell research.

Keywords:
holographic microscopy

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Area of Science:

  • Biophysics
  • Optical Microscopy
  • Cell Biology

Background:

  • Digital holographic microscopy (DHM) is suitable for live cell dynamics.
  • Coherence-controlled holographic microscopy (CCHM) extends DHM capabilities for live cells.
  • CCHM systems are prone to misalignment, hindering performance.

Purpose of the Study:

  • To develop a self-correcting system for CCHM.
  • To devise a control theory and automated alignment system for CCHM.
  • To improve the stability and performance of CCHM for biological applications.

Main Methods:

  • Developed a control theory for automated alignment.
  • Designed an automated alignment system for CCHM.
  • Utilized the modulus of the reconstructed holographic signal for alignment guidance.
  • Derived a 3D realignment algorithm for automated alignment, including initial, advanced, and maintenance procedures.

Main Results:

  • Successfully implemented and validated an automated alignment system for CCHM.
  • Demonstrated the effectiveness of the 3D realignment algorithm.
  • The system maintained microscope tuning over time.
  • Validated processes on a functioning microscope.

Conclusions:

  • Automated alignment significantly improves CCHM performance and stability.
  • CCHM, with automated alignment, can substantially contribute to biological studies.
  • This technology is particularly relevant for *in vitro* studies of cancer cells.