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Related Concept Videos

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Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Related Experiment Video

Updated: Jun 22, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Laser-scanning optical-resolution photoacoustic microscopy.

Zhixing Xie1, Shuliang Jiao, Hao F Zhang

  • 1Department of Electrical Engineering and Computer Science, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211, USA.

Optics Letters
|June 17, 2009
PubMed
Summary

We developed a new laser-scanning photoacoustic microscopy technique. This method offers high resolution and can be integrated with existing optical imaging systems for enhanced visualization.

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Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
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Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
11:21

Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography

Published on: January 15, 2013

Area of Science:

  • Biomedical Imaging
  • Optical Microscopy
  • Photoacoustic Microscopy

Background:

  • Optical microscopy is a cornerstone of biological research.
  • Limitations exist in optical resolution and penetration depth.
  • Photoacoustic microscopy offers complementary contrast mechanisms.

Purpose of the Study:

  • To develop a novel laser-scanning optical-resolution photoacoustic microscopy (OR-PAM) system.
  • To evaluate the system's imaging performance and potential for integration.

Main Methods:

  • A laser-scanning OR-PAM system was designed.
  • An ultrasonic transducer remained stationary while the laser beam was raster scanned using an x-y galvanometer.
  • Imaging was performed in an optically clear medium.

Main Results:

  • Achieved a lateral resolution of 7.8 micrometers.
  • Obtained a circular field of view with a 6 mm diameter.
  • Acquired a 256 x 256 pixel image in under 2 minutes using a 1,024 Hz pulse repetition rate laser.

Conclusions:

  • The developed laser-scanning OR-PAM system demonstrates high resolution and efficient data acquisition.
  • The method shows potential for seamless fusion with established optical microscopic modalities.
  • This technique could advance multimodal imaging in biological and biomedical applications.