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Non-invasive Focusing Through Scattering Layers Using Speckle-Correlations (1808.03267v1)
Published 9 Aug 2018 in physics.optics
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.