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Video-rate Scanning Confocal Microscopy and Microendoscopy
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Published on: October 20, 2011

Adaptive phase compensation for ultracompact laser scanning endomicroscopy.

Alex J Thompson1, Carl Paterson, Mark A A Neil

  • 1Photonics Group, Physics Department, Imperial College London, Prince Consort Road, London SW7 2BW, UK. alex.thompson08@imperial.ac.uk

Optics Letters
|May 5, 2011
PubMed
Summary

This study introduces a novel laser scanning endomicroscopy technique without moving parts or distal optics. This innovation enables the creation of compact endoscopic probes for advanced imaging applications.

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Probe-based Confocal Laser Endomicroscopy of the Urinary Tract: The Technique
06:31

Probe-based Confocal Laser Endomicroscopy of the Urinary Tract: The Technique

Published on: January 10, 2013

Area of Science:

  • Biomedical Optics
  • Endoscopic Imaging
  • Optical Engineering

Background:

  • Traditional laser scanning endomicroscopy often relies on bulky distal scanning mechanisms.
  • The miniaturization of endoscopic probes is crucial for minimally invasive procedures.
  • Aberrations and phase variations in fiber bundles limit imaging performance.

Purpose of the Study:

  • To develop a compact laser scanning endomicroscopy system without distal moving parts or optics.
  • To demonstrate wavefront control at the distal end of an imaging fiber bundle.
  • To enable 3D focal spot scanning and high-resolution imaging using a novel approach.

Main Methods:

  • Utilizing a spatial light modulator (SLM) for phase correction across a fiber imaging bundle.
  • Encoding arbitrary wavefronts at the fiber output using the SLM.
  • Implementing focusing and beam scanning capabilities without distal components.
  • Performing 3D focal spot scanning and imaging a United States Air Force resolution test chart.

Main Results:

  • Successful demonstration of focusing and beam scanning at the fiber output.
  • Achieved 3D scanning of the focal spot.
  • Acquired exemplar images of a United States Air Force resolution test chart, validating imaging capability.

Conclusions:

  • The proposed method allows for the development of extremely compact endoscopic probes.
  • Elimination of distal scanners and optics simplifies probe design and enhances robustness.
  • This technique offers a promising pathway for advanced, miniaturized endoscopic imaging systems.