1.9k citations · 5.3k across the 46 of their papers we have counts for
21 papers · 1 filter
Engineering of intelligent reflecting surfaces: Reflection locality and angular stability
Javad Shabanpour, Vladimir Lenets, Geoffroy Lerosey +2
Reconfigurable intelligent surfaces (RISs) are electromagnetically passive controllable structures, deflecting the incident wave beam in directions predefined by the control signal…
Super-resolved imaging based on spatiotemporal wavefront shaping
Guillaume Noetinger, Samuel Métais, Geoffroy Lerosey +3
A novel approach to improving the performances of confocal scanning imaging is proposed. We experimentally demonstrate its feasibility using acoustic waves. It relies on a new way…
Multiple scattering enabled superdirectivity from a subwavelength ensemble of resonators
S. Metais, G. Lerosey, F. Lemoult
An ensemble of resonators arranged on a sub-wavelength scale is usually considered as a bulk effective medium, known as a metamaterial, and can offer unusual macroscopic properties…
Turning Optical Complex Media into Universal Reconfigurable Linear Operators by Wavefront Shaping
Maxime W. Matthès, Philipp del Hougne, Julien de Rosny +2
Performing linear operations using optical devices is a crucial building block in many fields ranging from telecommunication to optical analogue computation and machine learning. F…
Multiple scattering limit in optical microscopy
Amaury Badon, A. Claude Boccara, Geoffroy Lerosey +2
Optical microscopy offers a unique insight of biological structures with a sub-micrometer resolution and a minimum invasiveness. However, the inhomogeneities of the specimen itself…
Crystalline metamaterials for topological properties at subwavelength scales
Simon Yves, Romain Fleury, Thomas Berthelot +3
The exciting discovery of topological condensed matter systems has lately triggered a search for their photonic analogs, motivated by the possibility of robust backscattering-immun…
Spatio-Temporal Imaging of Light Transport in Highly Scattering Media under White Light Illumination
Amaury Badon, Dayan Li, Geoffroy Lerosey +3
Imaging the propagation of light in time and space is crucial in optics, notably for the study of complex media. We here demonstrate the passive measurement of time-dependent Green…
Slow waves in locally resonant metamaterials line defect waveguides
Nadège Kaina, Alexandre Causier, Yoan Bourlier +3
In the past decades, many efforts have been devoted to the temporal manipulation of waves, especially focusing on slowing down their propagation. In electromagnetism, from microwav…
Exploiting spatiotemporal degrees of freedom for far field subwavelength focusing using time reversal in fractals
Matthieu Dupré, Fabrice Lemoult, Mathias Fink +1
Materials which possess a high local density of states varying at a subwavelength scale theoretically permit to focus waves onto focal spots much smaller than the free space wavele…
Smart optical coherence tomography for ultra-deep imaging through highly scattering media
Amaury Badon, Dayan Li, Geoffroy Lerosey +3
Multiple scattering of waves in disordered media is a nightmare whether it be for detection or imaging purposes. The best approach so far to get rid of multiple scattering is optic…
Retrieving time-dependent Green's functions in optics with low-coherence interferometry
Amaury Badon, Geoffroy Lerosey, Albert C. Boccara +2
We report on the passive measurement of time-dependent Green's functions in the optical frequency domain with low-coherence interferometry. Inspired by previous studies in acoustic…
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…
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…
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…
Controlling Light Through Optical Disordered Media : Transmission Matrix Approach
S. M. Popoff, G. Lerosey, M. Fink +2
We experimentally measure the monochromatic transmission matrix (TM) of an optical multiple scattering medium using a spatial light modulator together with a phase-shifting interfe…
Resonant Metalenses for Breaking the Diffraction Barrier
Fabrice Lemoult, Geoffroy Lerosey, Julien de Rosny +1
We introduce the resonant metalens, a cluster of coupled subwavelength resonators. Dispersion allows the conversion of subwavelength wavefields into temporal signatures while the P…
Far field subwavelength imaging and focusing using a wire medium based resonant metalens
Fabrice Lemoult, Geoffroy Lerosey, Mathias Fink
This is the second article in a series of two dealing with the concept of "resonant metalens" we introduced recently [Phys. Rev. Lett. 104, 203901 (2010)]. It is a new type of lens…
Revisiting the wire medium: a resonant metalens
Fabrice Lemoult, Geoffroy Lerosey, Mathias Fink
This article is the first one in a series of two dealing with the concept of "resonant metalens" we recently introduced [Phys. Rev. Lett. 104, 203901 (2010)]. Here, we focus on the…
Image Transmission Through an Opaque Material
S. M. Popoff, G. Lerosey, M. Fink +2
Optical imaging relies on the ability to illuminate an object, collect and analyze the light it scatters or transmits. Propagation through complex media such as biological tissues…
Measuring the Transmission Matrix in Optics : An Approach to the Study and Control of Light Propagation in Disordered Media
S. M. Popoff, G. Lerosey, R. Carminati +3
We introduce a method to experimentally measure the monochromatic transmission matrix of a complex medium in optics. This method is based on a spatial phase modulator together with…