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16 papers · 2 filters
Laser Doppler Imaging of Microflow
Michel Gross, Michael Atlan, Jacques Leng
We report a pilot study with a wide-field laser Doppler detection scheme used to perform laser Doppler anemometry and imaging of particle seeded microflow. The optical field carryi…
Walk dimension for light in complex disordered media
Romolo Savo, Matteo Burresi, Tomas Svensson +2
Transport in complex systems is characterized by a fractal dimension -- the walk dimension -- that indicates the diffusive or anomalous nature of the underlying random walk process…
Strong tip-sample coupling in thermal radiation scanning tunneling microscopy
Karl Joulain, Philippe Ben-Abdallah, Pierre-Olivier Chapuis +3
We analyze how a probing particle modifies the infrared electromagnetic near field of a sample. The particle, described by electric and magnetic polarizabilities, represents the ti…
Improving Photoacoustic-guided Focusing in Scattering Media by Spectrally Filtered Detection
Thomas Chaigne, Ori Katz, Jérôme Gateau +3
We experimentally and numerically study the potential of photoacoustic-guiding for light focusing through scattering samples via wavefront-shaping and iterative optimization. We ex…
Polarization and spatial coherence of electromagnetic waves in uncorrelated disordered media
Kevin Vynck, Romain Pierrat, Rémi Carminati
Spatial field correlation functions represent a key quantity for the description of mesoscopic phenomena in disordered media and the optical characterization of complex materials.…
Imaging With Nature: Compressive Imaging Using a Multiply Scattering Medium
Antoine Liutkus, David Martina, Sébastien Popoff +6
The recent theory of compressive sensing leverages upon the structure of signals to acquire them with much fewer measurements than was previously thought necessary, and certainly w…