Publication
Enhancement of microcavity polariton relaxation under confinement
Publications associées (32)
Overview of MAST results
Jonathan Graves, Wilfred Anthony Cooper, Mario Ludovico Podesta, Jan Horacek, Ben McMillan, Ricardo Pérez Suárez, Otto Asunta
The Mega Ampere Spherical Tokamak (MAST) programme is strongly focused on addressing key physics issues in preparation
for operation of ITER as well as providing solutions for DEMO design choices. In this regard, MAST has provided key
results in unders ...
IOP2015Overview of MAST results
Jonathan Graves, Wilfred Anthony Cooper, Mario Ludovico Podesta, Jan Horacek, Ben McMillan, Ricardo Pérez Suárez, Otto Asunta
The Mega Ampere Spherical Tokamak (MAST) programme is strongly focused on addressing key physics issues in preparation for operation of ITER as well as providing solutions for DEMO design choices. In this regard, MAST has provided key results in understand ...
Iop Publishing Ltd2015Numerical verification of light confinement in a nano solid immersion lens
Hans Peter Herzig, Gaël David Osowiecki, Toralf Scharf, Myun Sik Kim
Numerical simulations using the finite element method (FEM) verify the light confinement effect observed in nano-scale solid immersion lenses (SILs). As observed in experiments, a strong light confinement occurs on the bottom surface of the SILs in simulat ...
2013Determination of transverse relaxation rates in systems with scalar-coupled spins: The role of antiphase coherences
Homogeneous line-widths that arise from transverse relaxation tend to be masked by B-0 field inhomogeneity and by multiplets due to homonuclearf-couplings. Besides well-known spin-locking sequences that lead to signals that decay with a rate R-1p without a ...
Elsevier2013Large-k exciton dynamics in GaN epilayers: Nonthermal and thermal regimes
Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Eric Feltin, Denis Martin, Massimo Gurioli
We present a detailed investigation performed at low temperature (T < 50 K) concerning the exciton dynamics in GaN epilayers grown on c-plane sapphire substrates, focusing on the exciton formation and the transition from the nonthermal to the thermal regim ...
Amer Physical Soc2013Theoretical study of electronic transport in TCV ELMy H-mode
High-confinement mode (H-mode) is a promising reference scenario for ITER. But we are still facing major issues because of instabilities. They expel periodically some of the energy, which can damage the device. These instabilities are called the edge local ...
2011Intrinsic dynamics of weakly and strongly confined excitons in nonpolar nitride-based heterostructures
Nicolas Grandjean, Benoît Marie Joseph Deveaud, Jacques Levrat, Jean-Daniel Ganière, Pierre Michel Corfdir
Both weakly and strongly confined excitons are studied by time-resolved photoluminescence in a nonpolar nitride-based heterostructure grown by molecular beam epitaxy on the a-facet of a bulk GaN crystal, with an ultralow dislocation density of 2 × 105 cm-2 ...
2011Spin relaxation of free excitons in narrow GaN/AlxGa1-xN quantum wells
Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Eric Feltin
By performing pump-probe experiments, we study the relaxation dynamics of spin-polarized excitons in a wurtzite GaN/AlGaN quantum well (QW)grown by metal organic vapor phase epitaxy. The circular degree of polarization of the differential reflectivity sign ...
2010Local and Global Eulerian Gyrokinetic Simulations of Microturbulence in Realistic Geometry with Applications to the TCV Tokamak
In magnetically confined fusion devices, the energy and particle transport is significantly larger than expected from purely collisional processes. This degraded confinement mostly results from small-scale turbulence and prevents from reaching self-sustain ...
EPFL2010Plasma fluctuation studies in the TCV tokamak
One of the most important issues for magnetic-confinement fusion research is the so-called anomalous transport across magnetic field lines, i.e. transport that is in excess of that caused by collisional processes. The need to reduce anomalous transport in ...
EPFL2009