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Agarose-based Tissue Mimicking Optical Phantoms for Diffuse Reflectance Spectroscopy

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Published on: August 22, 2018

Imaging optical fields through heavily scattering media.

Jason A Newman¹, Kevin J Webb¹

¹School of Electrical and Computer Engineering, Purdue University 465 Northwestern Avenue, West Lafayette, Indiana 47907-1285, USA.

Physical Review Letters

|January 24, 2015

Summary

This summary is machine-generated.

Researchers recovered incident fields through scattering media using speckle correlations. This breakthrough enables robust imaging and communication in complex environments, overcoming previous limitations of weak scattering assumptions.

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Area of Science:

Optics and Photonics
Wave Physics
Information Theory

Background:

Coherent imaging and communication in scattering media are hindered by information loss due to field randomization.
Previous methods were limited to weak scattering conditions and sensitive to medium thickness.

Purpose of the Study:

To demonstrate a method for recovering incident fields through heavily scattering random media.
To overcome limitations of weak scattering and medium thickness dependence.

Main Methods:

Utilizing speckle correlations over incident field position.
Exploiting natural motion and extending the approach to various geometries.

Main Results:

Successfully recovered incident fields through heavily scattering media, independent of medium thickness.
Demonstrated applicability across different frequency regimes and wave types using near-infrared optical experiments.

Conclusions:

The developed method enables robust coherent imaging and communication in strongly scattering environments.
Potential applications include enhanced communication capacity, astronomical imaging of binary stars, and biomedical imaging.