Non-invasive Focusing Through Scattering Layers Using Speckle-Correlations
Galya Stern, Ori Katz
TL;DR
This paper introduces a non-invasive method for focusing light through scattering layers by leveraging speckle correlations as feedback, enabling imaging without guide stars.
Contribution
It presents a novel approach that uses speckle-correlation feedback for wavefront shaping, allowing non-invasive focusing without guide stars.
Findings
Successful non-invasive focusing through scattering layers
Utilization of speckle correlations as a feedback mechanism
Guide-star free focusing demonstrated
Abstract
Angular speckle correlations known as the 'memory-effect' have recently been exploited for non-invasive imaging through scattering layers. Here, we show how the imaging information obtained from speckle correlations can be used as a noninvasive feedback mechanism for wavefront shaping. We utilize this feedback to demonstrate guide-star free noninvasive focusing of coherent light through highly scattering layers.
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