Search

Your search keyword '"Christelle Brimont"' showing total 3 results
Start Over Author "Christelle Brimont" Publisher american chemical society (acs)
3 results on '"Christelle Brimont"'

1. Trapping Dipolar Exciton Fluids in GaN/(AlGa)N Nanostructures

Author

Yvon Cordier, Sébastien Chenot, Benjamin Damilano, Jessica Vives, Thierry Guillet, Maria Vladimirova, Pierre Lefebvre, François Chiaruttini, Benoit Jouault, Christelle Brimont, Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), ANR-15-CE30-0020,OBELIX,Vers un liquide quantique d'excitons indirects(2015), and ANR-11-LABX-0014,GANEX,Réseau national sur GaN(2011)

Subjects
Nanostructure, Materials science, cooling, Exciton, Bioengineering, Gallium nitride, 02 engineering and technology, Trapping, Coulomb-bound but spatially separated electron-hole pairs, Condensed Matter::Materials Science, chemistry.chemical_compound, exciton fluid, General Materials Science, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Quantum well, Phase diagram, Boson, Condensed Matter::Quantum Gases, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Condensed Matter::Other, gallium nitride Dipolar excitons, Mechanical Engineering, General Chemistry, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Dipole, chemistry, Chemical physics, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, electrostatic traps, gallium nitride, 0210 nano-technology, have a long
Abstract

International audience; Dipolar excitons offer a rich playground for both design of novel optoelectronic devices and fundamental many-body physics. Wide GaN/(AlGa)N quantum wells host a new and promising realization of dipolar excitons. We demonstrate the in-plane confinement and cooling of these excitons, when trapped in the electrostatic potential created by semitransparent electrodes of various shapes deposited on the sample surface. This result is a prerequisite for the electrical control of the exciton densities and fluxes, as well for studies of the complex phase diagram of these dipolar bosons at low temperature.

Published
2019

2. Blue Microlasers Integrated on a Photonic Platform on Silicon

Author

Jean-Yves Duboz, Xavier Checoury, Christelle Brimont, Benjamin Damilano, Fabrice Semond, Philippe Boucaud, Farsane Tabataba-Vakili, Thierry Guillet, Moustafa El Kurdi, Stephanie Rennesson, Sébastien Sauvage, Eric Frayssinet, Iännis Roland, Laetitia Doyennette, Bruno Gayral, Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Nanophysique et Semiconducteurs (NPSC), PHotonique, ELectronique et Ingénierie QuantiqueS (PHELIQS), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), ANR Quanonic, ANR Milagan, Labex Ganex, ANR-17-CE08-0043,MILAGAN,Laser microdisque en (Al,Ga,In)-N injecté électriquement(2017), ANR-11-LABX-0014,GANEX,Réseau national sur GaN(2011), ANR-13-BS10-0010,QUANONIC,Optique quantique et non-linéaire dans des cavités nitrures(2013), and Université Nice Sophia Antipolis (1965 - 2019) (UNS)

Subjects
Materials science, Nanophotonics, FOS: Physical sciences, Physics::Optics, Applied Physics (physics.app-ph), 02 engineering and technology, Grating, 01 natural sciences, law.invention, 010309 optics, law, 0103 physical sciences, Electrical and Electronic Engineering, Quantum well, business.industry, Physics - Applied Physics, 021001 nanoscience & nanotechnology, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], Optoelectronics, Whispering-gallery wave, Photonics, 0210 nano-technology, business, Waveguide, Lasing threshold, Biotechnology
Abstract

International audience; The main interest of group-III-nitride nanophotonic circuits is the integration of active structures and laser sources. A photonic platform of group-III-nitride microdisk lasers integrated on silicon and emitting in the blue spectral range is demonstrated. The active microdisks are side-coupled to suspended bus waveguides, and the coupled emission is guided and outcoupled to free space using grating couplers. A small gap size of less than 100 nm between the disk and the waveguide is required in the blue spectral range for optimal evanescent coupling. To avoid reabsorption of the microdisk emission in the waveguide, the quantum wells are etched away from the waveguide. Under continuous-wave excitation, loaded quality factors greater than 2000 are observed for the whispering gallery modes for devices with small gaps and large waveguide bending angles. Under pulsed excitation conditions, lasing is evidenced for 3 μm diameter microdisks integrated in a full photonic circuit. We thus present a first demonstration of a III-nitride microlaser coupled to a nanophotonic circuit.

Published
2018

3. Imaging of Photonic Crystal Localized Modes through Third-Harmonic Generation

Author

Christelle Brimont, Xavier Checoury, Bruno Gayral, Y. Zeng, Iännis Roland, Sébastien Sauvage, Philippe Boucaud, Moustafa El Kurdi, Thierry Guillet, Fabrice Semond, Zheng Han, Institut d'électronique fondamentale (IEF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Nanophysique et Semiconducteurs (NPSC), PHotonique, ELectronique et Ingénierie QuantiqueS (PHELIQS), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), ANR-13-BS10-0010,QUANONIC,Optique quantique et non-linéaire dans des cavités nitrures(2013), and Université Nice Sophia Antipolis (1965 - 2019) (UNS)

Subjects
Materials science, Physics::Optics, 02 engineering and technology, 01 natural sciences, law.invention, third-harmonic generation, 010309 optics, Optics, Optical microscope, law, 0103 physical sciences, Microscopy, Electrical and Electronic Engineering, Photonic crystal, III-nitride semiconductors, business.industry, Resolution (electron density), 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], Harmonics, Excited state, Optoelectronics, Photonics, subwavelength imaging, 0210 nano-technology, business, photonic crystal, Excitation, Biotechnology
Abstract

International audience; We demonstrate high-spatial resolution imaging of localized cavity modes through third-harmonic frequency conversion. The experiments are performed with a III-nitrideon-silicon photonic platform. The resonant cavities are formed within suspended two-dimensional photonic crystals and are excited with a continuous-wave excitation around 1550 nm. The III-nitride materials (GaN and AlN) are transparent for both pump and harmonics. The third-harmonic nonlinear process allows one to indirectly observe the fundamental confined cavity mode with spatial profiles equivalent to those usually obtained by local probe microscopy techniques such as scanning near-field optical microscopy. An excellent agreement is obtained between the measured polarization-resolved third harmonic emission patterns and those calculated through the third-order nonlinear polarization. We show that the spatial profiles of the radiated patterns are strongly dependent on defocusing, thus highlighting the strong sensitivity of the imaging.

Published
2016

Catalog

Books, media, physical & digital resources
See catalog results