• Corpus ID: 245986391

Speckle Memory Effect in the Frequency Domain and Stability in Time-Reversal Experiments

@inproceedings{Garnier2022SpeckleME,
  title={Speckle Memory Effect in the Frequency Domain and Stability in Time-Reversal Experiments},
  author={Josselin Garnier and Knut S{\o}lna},
  year={2022}
}
When waves propagate through a complex medium like the turbulent atmosphere the wave field becomes incoherent and the wave intensity forms a complex speckle pattern. In this paper we study a speckle memory effect in the frequency domain and some of its consequences. This effect means that certain properties of the speckle pattern produced by wave transmission through a randomly scattering medium is preserved when shifting the frequency of the illumination. The speckle memory effect is… 
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SHOWING 1-10 OF 39 REFERENCES
Memory effects in propagation of optical waves through disordered media.
TLDR
Experimental results generally verify the theoretical predictions of FKLS, but do find one significant difference between experiment and theory — namely, that the exponential decay of C(x) is observed to set in almost immediately with nonzero x, while the theory predicts that its onset should be decelerated.
Noninvasive Imaging Through Random Media
TLDR
The mathematical analysis is presented that explains the quite stunning performance of such a scheme for speckle imaging and identifies a scaling regime where the scheme works well, the white-noise paraxial regime, which leads to the Ito-Schrodinger model for the wave amplitude.
Random multiple scattering of ultrasound. II. Is time reversal a self-averaging process?
TLDR
Experimental results show that it is possible to obtain a robust estimation on a single realization of disorder, taking advantage of the wide frequency bandwidth, and the quality of focusing saturates, which the authors believe is linked to the Thouless factor g.
Focusing Waves Through a Randomly Scattering Medium in the White-Noise Paraxial Regime
TLDR
Central questions are then the focusing resolution and signal-to-noise ratio at the target, their dependence on the physical parameters, and the capacity to focus selectively in the neighborhood of the target point and therefore to transmit images.
Statistical Stability in Time Reversal
TLDR
The refocusing resolution in a high frequency remote-sensing regime is analyzed and it is shown that, because of multiple scattering in an inhomogeneous or random medium, it can improve beyond the diffraction limit.
Imaging through a scattering medium by speckle intensity correlations
In this paper we analyze an imaging technique based on intensity speckle correlations over incident field position proposed in [J. A. Newmann and K. J. Webb, Phys. Rev. Lett. 113, 263903 (2014)]. Its…
Scintillation in the White-Noise Paraxial Regime
In this paper the white-noise paraxial wave model is considered. This model describes for instance the propagation of laser beams in the atmosphere in some typical scaling regimes. The closed-form…
Wave Propagation and Time Reversal in Randomly Layered Media
and Overview of the Book.- Waves in Homogeneous Media.- Waves in Layered Media.- Effective Properties of Randomly Layered Media.- Scaling Limits.- Asymptotics for Random Ordinary Differential…
Super-resolution in time-reversal acoustics.
TLDR
The phenomenon of super-resolution in time-reversal acoustics is analyzed theoretically and with numerical simulations and numerical simulations confirm the theory.
Fourth-Moment Analysis for Wave Propagation in the White-Noise Paraxial Regime
In this paper we consider the Itô–Schrödinger model for wave propagation in random media in the paraxial regime. We solve the equation for the fourth-order moment of the field in the regime where the…
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