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8 papers · 2 filters
Dispersion in media containing resonant inclusions: where does it come from?
Fabrice Lemoult, Mathias Fink, Geoffroy Lerosey
We study the propagation of waves in a quasi 1D homogeneous host medium filled with various resonators. We first prove that a far field coupling between the elements explains its d…
Ultra small mode volume defect cavities in spatially ordered and disordered metamaterials
Nadège Kaina, Fabrice Lemoult, Mathias Fink +1
In this letter we study metamaterials made out of resonant electric wires arranged on a spatial scale much smaller than the free space wavelength and we show that they present a hy…
Distance dependence of the local density of states in the near field of a disordered plasmonic film
E. Castanié, V. Krachmalnicoff, A. Cazé +3
We measure the statistical distribution of the photonic local density of states in the near field of a semi-continuous gold film. By varying the distance between the measurement pl…
Absorption by an optical dipole antenna in a structured environment
Étienne Castanié, Rémi Vincent, Romain Pierrat +1
We compute generalized absorption and extinction cross-sections of an optical dipole nanoantenna in a structured environment. The expressions explicitly show the influence of radia…
Exploiting the Time-Reversal Operator for Adaptive Optics, Selective Focusing and Scattering Pattern Analysis
Sébastien Michel Popoff, Alexandre Aubry, Geoffroy Lerosey +3
We report on the experimental measurement of the backscattering matrix of a weakly scattering medium in optics, composed of a few dispersed gold nanobeads. The DORT method (Decompo…
Theoretical study of Acousto-optical coherence tomography using random phase jumps on US and light
Max Lesaffre, Salma Farahi, A. C. Boccara +2
Acousto-Optical Coherence Tomography (AOCT) is variant of Acousto Optic Imaging (called also ultrasonic modulation imaging) that makes possible to get z resolution with acoustic an…