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Related Experiment Video

Updated: Jun 20, 2026

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Imaging through a scattering wall using absorption.

K M Yoo, F Liu, R R Alfano

|September 25, 2009

Summary

This summary is machine-generated.

By increasing absorption in scattering materials, we can reduce background noise and make hidden objects visible. This technique allows seeing through cloudy or opaque random scattering walls.

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Last Updated: Jun 20, 2026

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Area of Science:

Optics
Photonics
Materials Science

Background:

Random scattering media obscure objects by diffusing light.
Multiple scattered light (noise) overwhelms the direct (ballistic) signal.

Purpose of the Study:

To demonstrate a method for visualizing objects hidden by random scattering.
To investigate the role of absorption in scattering media for image retrieval.

Main Methods:

Introducing controlled absorption into a random scattering medium.
Analyzing the differential reduction of scattered light intensity versus ballistic light intensity.

Main Results:

Increasing absorption preferentially attenuates multiple scattered light.
Sufficient absorption enables the ballistic signal to dominate, revealing the hidden object.
Objects behind initially opaque scattering walls become visible.

Conclusions:

Absorption is a critical factor for overcoming scattering in random media.
This method provides a pathway to "see through" opaque scattering materials.
Potential applications in imaging and optical communication through turbid media.