A5073550953- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Photonic Crystals and Applications
- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Cold Atom Physics and Bose-Einstein Condensates
- Plasmonic and Surface Plasmon Research
- Optical Network Technologies
- Ocular and Laser Science Research
- Laser-Matter Interactions and Applications
- Graphene research and applications
- Solid State Laser Technologies
- Laser Material Processing Techniques
- Advanced Fiber Optic Sensors
- Laser Design and Applications
- Surface Roughness and Optical Measurements
- Thermal Radiation and Cooling Technologies
- Mechanical and Optical Resonators
- Optical Coatings and Gratings
- Molecular Junctions and Nanostructures
- Orbital Angular Momentum in Optics
- Near-Field Optical Microscopy
- Semiconductor Lasers and Optical Devices
Institut de Microélectronique, Electromagnétisme et Photonique
2023-2024
Centre National de la Recherche Scientifique
2019-2023
Centre de Nanosciences et de Nanotechnologies
2021-2023
Université Paris-Saclay
2021-2023
Institut polytechnique de Grenoble
2023
Université Savoie Mont Blanc
2023
Université Grenoble Alpes
2023
Institut des Nanotechnologies de Lyon
2017-2020
École Centrale de Lyon
2018-2019
Université Claude Bernard Lyon 1
2018-2019
We study the nonlinear optical properties of graphene integrated onto Si3N4 waveguides under picosecond and subpicosecond pulsed excitation at telecom wavelength. Saturable absorption guided-mode is measured, temporal effects related to photoexcited carrier dynamics in are highlighted. Thereafter, a model carriers implemented into Schrödinger equation order simulate pulse propagation across hybrid graphene/Si3N4 waveguide. This allows us extract phenomenological parameters saturable...
Abstract Novel platforms interfacing trapped cold atoms and guided light in nanoscale waveguides are a promising route to achieve regime of strong coupling between single pass, with applications quantum non-linear optics simulation. A challenge for the experimental development this emerging waveguide-QED field research is combine facilitated optical access atom transport, trapping via modes robustness inherent nanofabrication imperfections. In endeavor, here we propose interface Rubidium...
We exploit slow light (high ng) modes in planar photonic crystals order to design a compact cavity, which provides an attractive path towards the miniaturization of near-infrared integrated fast pulsed lasers. By applying dispersion engineering techniques, we can structures with low dispersion, as needed by mode-locking operation. Our basic InP SiO2 heterostructure is robust and well suited laser applications. show that optimized 30 μm long cavity yields 9 frequency-equidistant FSR 178 GHz...
We demonstrate a graphene based electro-optic free-space modulator yielding reflectance contrast of 20% over strikingly large 250nm wavelength range, centered in the near-infrared telecom band. Our device is on original association planar Bragg reflector, topped with an electrically contacted double-layer capacitor structure employing high work-function oxide shown to confer static doping absence external bias, thereby reducing switching voltage range +/-1V. The design, fabrication and...
Novel platforms interfacing trapped cold atoms and guided light in nanoscale waveguides are a promising route to achieve regime of strong coupling between single pass, with applications quantum non-linear optics simulation. A challenge for the experimental development this emerging waveguide-QED field research is combine facilitated optical access atom transport, trapping via modes robustness inherent nanofabrication imperfections. In endeavor, here we propose interface Rubidium photonic...
Interfacing cold neutral atoms and photons guided in nanoscale waveguides has raised a large interest over the recent years, with wealth of emerging opportunities. Arrays can be trapped evanescent field modes strong transverse confinement enables to increase individual atom-photon coupling single pass. Remarkable experimental advances have been obtained optical nanofibers [1], but photonic crystals (PCW) are very promising as they allow for precise dispersion engineering. Despite these...
A free-space electro-optic modulator device exploiting graphene’s surface plasmon polariton (SPP) at near-infrared frequencies is proposed and theoretically studied. The made up of two resonant structures, the first being a metallic SPP displaying broadband absorption, second own SPP, which shown to frustrate when excited, leading narrow reflectance peak. Doping graphene achieve Fermi-level tuning shift wavelength frustration phenomenon, thereby enabling use as modulator. reduction 20% in...
Après avoir suscité l’intérêt du secteur microélectronique, le graphène, matériau bidimensionnel constitué d’un monofeuillet d’atomes de carbone, pourrait bien devenir un phare l’optoélectronique. Ses propriétés optiques rendent pertinent pour large spectre d’applications, dont potentiel est loin d’être épuisé, en particulier l’optique intégrée. Renforcer son interaction avec la lumière reste enjeu important miniaturisation des composants.
We realize compact active photonic crystal cavities for miniaturized chip-based pulsed lasers. experimentally validate our approach relying on slow-light dispersion engineering sustaining the intended regular comb of modes from a 30 µm long cavity.
The realization of mode-locked lasers capable generating short optical pulses in the near-infrared is a key enabler for various applications including high data rate interconnects. related technology mostly consists bulky and stand-alone devices, which tends to hinder their widespread use. In addition, integration such devices onto chip-based platforms could bring advantages terms robustness stability, while offering some prospects advanced hybrid photonic-electronic architectures. There has...
We investigate the saturable absorption of hybrid graphene/silicon-nitride waveguides at telecom wavelengths. By measuring power dependent transmission picosecond and sub-picosecond pulses, we clarify temporal dynamics photo-excited carriers in graphene.
We investigate the saturable absorption of hybrid graphene/ silicon-nitride waveguides at telecom wavelengths. By measuring power dependent transmission picosecond and sub-picosecond pulses, we clarify temporal dynamics photo-excited carriers in graphene. © 2019 The Author(s)
We show that the photonic dispersion of a two coupled-mode system can be actively tuned using graphene-induced non-radiative loss. Our implementation exploits spatial modulation graphene’s absorption via patterned oxide substrates.
Coupling quantum emitters and nanostructures, in particular cold atoms waveguides, has recently raised a large interest due to unprecedented possibilities of engineering light-matter interactions. However, the implementation these promising concepts been hampered by various theoretical experimental issues. In this work, we propose new type periodic dielectric waveguide that provides strong interactions between guided photons with an unusual dispersion. We design asymmetric comb supports slow...
Coupling quantum emitters and nanostructures, in particular cold atoms waveguides, has recently raised a large interest due to unprecedented possibilities of engineering light-matter interactions. However, the implementation these promising concepts been hampered by various theoretical experimental issues. In this work, we propose new type periodic dielectric waveguide that provides strong interactions between guided photons with an unusual dispersion. We design asymmetric comb supports slow...
We present a proposal for trapping Rubidium cold atoms near novel design of GaInP photonic crystal waveguide with characteristics optimized through systematic and inverse design. Purcell factors higher than unity are predicted.