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Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

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Reciprocity-assisted ghost imaging through dynamic random media.

Edward Tananyan, Ohad Lib, Michal Zimmerman

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Summary

This summary is machine-generated.

Ghost imaging utilizes intensity correlations for object visualization. This study reveals correlations between counter-propagating beams in random media, enabling ghost imaging with separated sources.

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Area of Science:

Optics and Photonics
Quantum Imaging

Background:

Ghost imaging relies on intensity correlations between a single-pixel detector and a camera.
Typically, the object and camera are positioned at conjugate planes for correlated illumination.

Purpose of the Study:

To investigate correlations between counter-propagating beams in a random medium.
To demonstrate a novel ghost imaging scheme using these correlations.

Main Methods:

Leveraging optical reciprocity and the memory effect in a random medium.
Conducting a proof-of-principle experiment with two thin diffusers separated by a variable distance.

Main Results:

Observed correlations between beams traversing the random medium in opposite directions.
Found that the angular correlation width decreases with increasing diffuser separation.

Conclusions:

Optical reciprocity and memory effect enable correlations in counter-propagating beams.
Demonstrated a ghost imaging setup with the object and camera at opposite ends of the random medium, illuminated by potentially different sources.