A5075538215- Plasmonic and Surface Plasmon Research
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Optical Coatings and Gratings
- Gold and Silver Nanoparticles Synthesis and Applications
- Metamaterials and Metasurfaces Applications
- Thermal Radiation and Cooling Technologies
- Neural Networks and Reservoir Computing
- Advanced Fiber Optic Sensors
- Optical Wireless Communication Technologies
- Nanocluster Synthesis and Applications
- Thermography and Photoacoustic Techniques
- Advanced Antenna and Metasurface Technologies
- Magneto-Optical Properties and Applications
- Adaptive optics and wavefront sensing
- Terahertz technology and applications
- Lightning and Electromagnetic Phenomena
- Semiconductor Lasers and Optical Devices
- Electromagnetic Simulation and Numerical Methods
- Laser-Ablation Synthesis of Nanoparticles
- Optical Network Technologies
- Optical and Acousto-Optic Technologies
Laboratoire Interdisciplinaire Carnot de Bourgogne
2022-2024
Université de Bourgogne
2022-2024
Centre National de la Recherche Scientifique
2014-2024
Université Bourgogne Franche-Comté
2021-2022
Laboratoire d’Astrophysique de Marseille
2019
Château Gombert
2019
Institut Fresnel
2014-2019
Centrale Marseille
2014-2019
Epsilon Systems (United States)
2016
Aix-Marseille Université
2014-2015
We design planar silicon antennas for controlling the emission rate of magnetic or electric dipolar emitters. Evolutionary algorithms coupled to Green Dyadic Method lead different optimized geometries which depend on nature and orientation dipoles. discuss physical origin obtained configurations thanks modal analysis but also emphasize role nanoscale LDOS. complete our study using finite element method demonstrate an enhancement up 2000 Purcell factor in europium ions. Our work brings...
Plasmonic resonators are excellent candidates to control reflectance of functionalized substrates. Because their subwavelength characteristic dimensions, they can even be used modify the color transparent glass plates without altering transparency quality. Their spatial arrangement must carefully chosen so that do not produce nonspecular diffraction, whatever density. We compare here response silver nanoparticles (NPs) arrays with different NPs sizes, densities, and arrangements (periodic...
Numerical calculation of modes in dispersive and absorptive systems is performed using the finite element method. The dispersion tackled frame an extension Maxwell's equations where auxiliary fields are added to electromagnetic field. This method applied multidomain cavities photonic crystals including Drude Drude–Lorentz metals. results compared analytical solutions for simple previous literature crystals, showing excellent agreement. advantages developed lie versatility regarding...
In this paper, we describe Fourier-based Wave Front Sensors (WFS) as linear integral operators, characterized by their Kernel. a first part, derive the dependency of quantity with respect to WFS's optical parameters: pupil geometry, filtering mask, tip/tilt modulation. second part focus study on special case convolutional Kernels. The assumptions required be in such regime are described. We then show that these kernels allow drastically simplify model summarizing its behavior concise and...
Light emission of europium (Eu3+) ions placed in the vicinity optically resonant nanoantennas is usually controlled by tailoring local density photon states (LDOS). We show that polarization and shape excitation beam can also be used to manipulate light emission, as azimuthally or radially polarized cylindrical vector offers spatially electric magnetic fields, addition effect silicon nanorings (Si-NRs) nanoantennas. The photoluminescence mappings Eu3+ transitions Si phonon are strongly...
Resonances, also known as quasinormal modes (QNMs) in the non-Hermitian case, play a ubiquitous role all domains of physics ruled by wave phenomena, notably continuum mechanics, acoustics, electrodynamics, and quantum theory. The non-Hermiticity arises from system losses, whether they are material (Joule losses electromagnetism) or linked to openness problem (radiation losses). In this paper, we focus on latter delicate matter when considering bounded computational mandatory using, e.g.,...
A two-dimensional periodic sub-wavelength array of vertical dielectric cylinders on a glass substrate is studied numerically using three different electromagnetic approaches. It shown that such structure can present narrow-band spectral resonance characterized by large angular tolerances and 100% maximum in reflection. In particular, two-nanometer bandwidth the reflectivity stays above 90% within angles incidence exceeding 10 degrees for unpolarized light. Bloch modal analysis shows these...
Metal nanoparticles (NPs) colloids provide a unique combination of optical, magnetic, electronic, and thermal properties, finding applications in various fields ranging from optoelectronics to cancer therapy. The chemical synthesis such NPs has been refined high degree control crystallinity, shape, size distribution. Among them, gold are particular interest because they host plasmonic resonances that enhance their interactions with light. Their shape impose the resonance wavelengths, which,...
Plasmonic resonances in metallic nanoparticles are exploited to create efficient optical filtering functions. A Finite Element Method is used model gratings. The accuracy of this method shown by comparing numerical results with measurements on a two-dimensional grating gold nanocylinders elliptic cross section. Then parametric analysis performed order design filters polarization dependent properties together high transparency over the visible range. behavior nanoparticle gratings also...
We report the modeling, design and fabrication of transparent flat optical surfaces which may find applications such as innovative display devices head-up-display systems in transport industry.
An extensive numerical study of diffraction a plane monochromatic wave by single gold cone on substrate and periodical array such cones shows formation curls in the map Poynting vector. They result from interference between incident wave, reflected substrate, field scattered cone(s). In case cone, when going away its base along surface, main contribution is given plasmon surface (PSW) excited surface. As expected, it has predominant direction propagation, determined polarization. Two...
We demonstrate experimentally the dual beam optical drive of an interconnect-free 2-input, 2-output 1-bit adder implemented inside a single gold plasmonic cavity, focused ion milled in ultrathin crystalline microplate. To obtain this result, we have set coherent 2-beam excitation scheme up that allows us to independently and arbitrarily choose intensity, polarization, relative phase shift two femtosecond-pulsed laser spots. The spots are on any chosen location micrometer-sized cavity....
We aim at controlling the spatial distribution of nonlinear photoluminescence in a shaped micrometer-size crystalline gold flake. Interestingly, underlying surface plasmon modal landscape sustained by this mesoscopic structure can be advantageously used to generate (nPL) remote locations away from excitation spot. By pattern, we show that delocalized intensity redistributed spatially. This is first accomplished changing polarization orientation pulsed laser order select subset available...
periodic and disordered silver nanoparticle arrays on glass are characterized compared in transmission reflection for visualization application, the case of monocolor (one single size) or bicolor (two sizes) operation.
Abstract Semiconductor nanostructures are used in many applications, from electronics to nanophotonics cite just a few, and most of these applications based on silicon or silicon‐related technologies. With the miniaturization nanoscale devices, heat dissipation becomes limitation their efficiency, robustness, reliability. Hence, managing thermal effects at is attracting growing interest promising approach relies control acoustic phonons that responsible transfers. However, have high...
Filtering properties of periodic arrays metallic nanoparticles are investigated. Effect the width, height and spacing particles theoretically shown. Comparisons numerical simulations with measurements provided.
In contrast to the high performances of long-range, high-speed optical information transfer, processing remains outperformed by electronic microprocessing. The two mains reasons are lack gain medium that hampers development an analogue transistor and compactness approaches proposed so far. Here, we demonstrate a new concept design all-optical elementary computing units based on shaping plasmonic modal landscape in micrometric on-chip 2D cavities realize reconfigurable Arithmetic Logic Units...