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Related Experiment Video

Updated: Mar 22, 2026

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

Published on: July 26, 2016

Photoacoustics with coherent light.

Emmanuel Bossy¹, Sylvain Gigan²

¹ESPCI Paris, PSL Research University, CNRS, INSERM, Institut Langevin, 1 rue Jussieu, 75005 Paris, France; Optics Laboratory and Laboratory of Applied Photonics Devices, School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.

|April 13, 2016

Summary

This summary is machine-generated.

Coherent light manipulation enhances photoacoustic imaging (PAI) by enabling better optical wavefront shaping and improving spatial resolution. This synergy opens new avenues for minimally invasive endoscopic PAI applications.

Keywords:

Coherent light Multiple scattering Optical wavefront shaping Photoacoustic imaging Speckle Illumination

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Area of Science:

Biomedical Optics
Acoustic Imaging
Wavefront Engineering

Background:

Photoacoustic imaging (PAI) is a rapidly growing biomedical imaging modality.
Light propagation in PAI is typically modeled using transport theory.
Recent optical advances allow manipulation of coherent light in scattering media.

Purpose of the Study:

To review the exploitation of light coherence in photoacoustic imaging.
To illustrate the synergistic relationship between optical wavefront shaping and PAI.
To discuss future applications and challenges in advanced PAI.

Main Methods:

Review of recent research integrating light coherence with PAI.
Demonstration of photoacoustic effect as feedback for optical wavefront shaping.
Exploration of coherence-enhanced PAI techniques.

Main Results:

Coherent light can be manipulated for novel imaging approaches in scattering media.
PAI serves as a feedback mechanism for optical wavefront control.
Exploiting light coherence enhances PAI spatial resolution and enables endoscopic designs.

Conclusions:

The integration of light coherence and PAI offers significant advancements.
Further research is needed to overcome challenges for practical clinical applications.
This approach promises enhanced diagnostic capabilities and minimally invasive procedures.