Explanipedia

Two-step growth procedure for homogeneous GaN NW arrays on graphene Open

Dyhia Tamsaout, E. Cambril, Laurent Travers, Ali Madouri, N. Gogneau , et al. · 2025

Growth of GaN nanowires (NWs) on graphene substrates is carried out by plasma-assisted molecular beam epitaxy. We test a two-step growth procedure consisting of a first stage at relatively low temperature followed by a second stage at high…

Selective Area Growth of GaN μ-Platelets on Graphene Open

Jonathan Henriques, Dyhia Tamsaout, Ludovic Largeau, E. Cambril, Lucie Valéra , et al. · 2024

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Mode-locked waveguide polariton laser Open

H. Souissi, M. Gromovyi, I. Septembre, V. Develay, Christelle Brimont , et al. · 2024

So far, exciton-polariton (polariton) lasers were mostly single-mode lasers based on microcavities. Despite the large repulsive polariton-polariton interaction, a pulsed mode-locked polariton laser was never, to our knowledge, reported. He…

Mode-locked GaN waveguide polariton laser Open

H. Souissi, M. Gromovyi, I. Septembre, V. Develay, Christelle Brimont , et al. · 2023

So far, exciton-polariton (polariton) lasers were mostly single mode lasers based on microcavities. Despite the large repulsive polariton-polariton interaction, pulsed mode-locked polariton laser was never reported. Here, we use a $60 \ μm…

Mode synchronization in GaN ridge polariton lasers Open

H. Souissi, M. Gromovyi, Thiaka Gueye, Christelle Brimont, L. Doyennette , et al. · 2023

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Thin-film blue light-emitting diodes for flexible device operation down to a millimetric radius of curvature Open

Jules Duraz, E. Cambril, Étienne Herth, Éric Frayssinet, B. Damilano , et al. · 2023

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FABRICATION AND CHARACTERIZATION TECHNIQUES TO STUDY FLEXIBLE MICRO LIGHT-EMITTING DIODES WITH A MILLIMETRIC RADIUS OF CURVATURE Open

Jules Duraz, E. Cambril, Étienne Herth, B. Damilano, Suresh Sundaram , et al. · 2022

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Ridge Polariton Laser: Different from a Semiconductor Edge-Emitting Laser Open

H. Souissi, M. Gromovyi, T Gueye, Christelle Brimont, L. Doyennette , et al. · 2022

We experimentally demonstrate the difference between a ridge polariton laser, and a conventional edge-emitting ridge laser operating under electron-hole population inversion. The horizontal laser cavities are 20 -- 60 $\mu$m long GaN etche…

In situ observation of droplet nanofluidics for yielding low-dimensional nanomaterials Open

Zheng Fan, Jean‐Luc Maurice, Ileana Florea, Wanghua Chen, Linwei Yu , et al. · 2021

GaAs manufacturing processes conditions for micro- and nanoscale devices Open

François Joint, Claire Abadie, P. Vigneron, Laurent Boulley, Fabien Bayle , et al. · 2020

Metasurface-based total internal reflection microscopy Open

Antu Nehuen Gortari, S. Bouchoule, E. Cambril, Andréa Cattoni, Lara Hauke , et al. · 2020

Recent years have seen a tremendous progress in the development of dielectric metasurfaces for visible light applications. Such metasurfaces are ultra-thin optical devices that can manipulate optical wavefronts in an arbitrary manner. Here…

Strong coupling of exciton-polaritons in a bulk GaN planar waveguide: quantifiying the Rabi splitting Open

Christelle Brimont, L. Doyennette, Geoffrey Kreyder, François Réveret, P. Disseix , et al. · 2020

We investigate the demonstration of the strong coupling between excitons and guided photons in a GaN slab waveguide. The dispersions of waveguide polaritons are measured from T=6K to 300K through gratings. They are carefully analyzed withi…

Temporal coherence of spatially indirect excitons across Bose–Einstein condensation: the role of free carriers Open

Romain Anankine, Suzanne Dang, Mussie Beian, E. Cambril, Carmen Gomez Carbonell , et al. · 2018

We study the time coherence of the photoluminescence radiated by spatially\nindirect excitons confined in a 10 $\\mu$m electrostatic trap. Above a critical\ntemperature of 1 Kelvin, we show that the photoluminescence has a homogeneous\nspe…

Dynamical control over the confinement of spatially indirect excitons in electrostatic traps of GaAs coupled quantum wells Open

Mussie Beian, Suzanne Dang, Mathieu Alloing, Romain Anankine, E. Cambril , et al. · 2017

We study spatially indirect excitons confined in a 10 $μ$m wide electrostatic trap of a GaAs double quantum well. We introduce a technique to control the amplitude of the electric field interacting with the excitons electric dipole, with n…

Spectroscopic signatures for the dark Bose-Einstein condensation of spatially indirect excitons Open

Mussie Beian, Mathieu Alloing, Romain Anankine, E. Cambril, Carmen Gomez Carbonell , et al. · 2017

We study semiconductor excitons confined in an electrostatic trap of a GaAs bilayer heterostructure. We evidence that optically bright excitonic states are strongly depleted while cooling to sub-Kelvin temperatures. In return, the other ac…

Publisher’s Note: Quantized Vortices and Four-Component Superfluidity of Semiconductor Excitons [Phys. Rev. Lett. <b>118</b>, 127402 (2017)] Open

Romain Anankine, Mussie Beian, Suzanne Dang, Mathieu Alloing, E. Cambril , et al. · 2017

This corrects the article DOI: 10.1103/PhysRevLett.118.127402.

Quantized Vortices and Four-Component Superfluidity of Semiconductor Excitons Open

Romain Anankine, Mussie Beian, Suzanne Dang, Mathieu Alloing, E. Cambril , et al. · 2017

We study spatially indirect excitons of GaAs quantum wells, confined in a 10 μm electrostatic trap. Below a critical temperature of about 1 K, we detect macroscopic spatial coherence and quantized vortices in the weak photoluminescence emi…

In-situ TEM observation of in-plane silicon nanowires growth via solid-liquid-solid process: reactive wetting of indium droplets on a-Si:H Open

Zheng Fan, Jean‐Luc Maurice, Ileana Florea, S. Guilet, E. Cambril , et al. · 2016

We consider the solid-liquid-solid (SLS) process of in-plane silicon nanowire growth from a point of view of spontaneous motion of indium (In) droplets on hydrogenated amorphous silicon (a-Si:H) coated substrates, and intermixing with the …

Temporal Coherence of a Homogeneously Broadened Gas of Spatially Indirect Excitons and "Gray" Bose-Einstein Condensation Open

Romain Anankine, Suzanne Dang, Mussie Beian, E. Cambril, K. Merghem , et al. · 2016

We study the time coherence of the photoluminescence radiated by spatially indirect excitons confined in a 10 $\mu$m electrostatic trap. Above a critical temperature of 1 Kelvin, we show that the photoluminescence has a homogeneous spectra…

Temporal Coherence of Semiconductor Excitons across Bose-Einstein Condensation Open

Romain Anankine, Suzanne Dang, Mussie Beian, E. Cambril, K. Merghem , et al. · 2016

Very recently, we have shown experimentally that Bose-Einstein condensation leads to a mostly dark gas of excitons in GaAs heterostructures. A small fraction of optically active states nevertheless contributes to the condensate so that a w…

Temporal Coherence of Spatially Indirect Excitons across Bose-Einstein Condensation: the Role of Free Carriers Open

Romain Anankine, Suzanne Dang, Mussie Beian, E. Cambril, Carmen Gomez Carbonell , et al. · 2016

We study the time coherence of the photoluminescence radiated by spatially indirect excitons confined in a 10 $μ$m electrostatic trap. Above a critical temperature of 1 Kelvin, we show that the photoluminescence has a homogeneous spectral …

Surface chemistry of InP ridge structures etched in Cl2-based plasma analyzed with angular XPS Open

S. Bouchoule, Romain Chanson, A Pageau, E. Cambril, S. Guilet , et al. · 2015

Two x-ray photoelectron spectroscopy configurations are proposed to analyze the surface chemistry of micron-scale InP ridge structures etched in chlorine-based inductively coupled plasma (ICP). Either a classical or a grazing configuration…

Observation of a Dark Condensate of Excitons Open

Mussie Beian, Mathieu Alloing, Romain Anankine, E. Cambril, Carmen Gomez Carbonell , et al. · 2015

We study semiconductor excitons confined in an electrostatic trap of a GaAs bilayer heterostructure. We evidence that optically bright excitonic states are strongly depleted while cooling to sub-Kelvin temperatures. In return, the other ac…

Spectroscopic Signatures for the Dark Bose-Einstein Condensation of\n Spatially Indirect Excitons Open

Mussie Beian, Mathieu Alloing, Romain Anankine, E. Cambril, Carmen Gomez Carbonell , et al. · 2015

We study semiconductor excitons confined in an electrostatic trap of a GaAs\nbilayer heterostructure. We evidence that optically bright excitonic states are\nstrongly depleted while cooling to sub-Kelvin temperatures. In return, the\nother…

Spectroscopic Signatures for Bose-Einstein Condensation of Dark Excitons in a Trap Open

Mussie Beian, Mathieu Alloing, Romain Anankine, E. Cambril, K. Merghem , et al. · 2015

We study spatially indirect excitons confined in a 10 microns wide electrostatic trap. At sub-Kelvin bath temperatures, we show that the optical emission from the trap is anomalously weak in a regime where the excitons photoluminescence is…

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