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Published November 1, 2019 | public
Journal Article

Physical picture of the optical memory effect


The optical memory effect is an interesting phenomenon that has attracted considerable attention in recent decades. Here, we present a new physical picture of the optical memory effect, in which the memory effect and the conventional spatial shift invariance are united. Based on this picture we depict the role of thickness, scattering times, and anisotropy factor and derive equations to calculate the ranges of the angular memory effect (AME) of different scattering components (ballistic light, singly scattered, doubly scattered, etc.), and hence a more accurate equation for the real AME ranges of volumetric turbid media. A conventional random phase mask model is modified according to the new picture. The self-consistency of the simulation model and its agreement with the experiment demonstrate the rationality of the model and the physical picture, which provide powerful tools for more sophisticated studies of the memory-effect-related phenomena and wavefront-sensitive techniques, such as wavefront shaping, optical phase conjugation, and optical trapping in/through scattering media.

Additional Information

© 2019 Chinese Laser Press. Received 26 June 2019; revised 18 August 2019; accepted 19 September 2019; posted 20 September 2019 (Doc. ID 370998); published 1 November 2019. Funding: National Key Research and Development Program of China Stem Cell and Translational Research (2016YFC0100602).

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October 18, 2023