F
Fabrice Vallée
Researcher at University of Lyon
Publications - 127
Citations - 8152
Fabrice Vallée is an academic researcher from University of Lyon. The author has contributed to research in topics: Femtosecond & Nanoparticle. The author has an hindex of 48, co-authored 121 publications receiving 7535 citations. Previous affiliations of Fabrice Vallée include École Polytechnique & University of Bordeaux.
Papers
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Journal ArticleDOI
Ultrafast Electron Dynamics and Optical Nonlinearities in Metal Nanoparticles
TL;DR: In this article, the femtosecond optical response of noble metal nanoparticles and its connection to the ultrafast electron dynamics are discussed in light of the results of high-sensitivity femtocond pump−probe experiments.
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Femtosecond-tunable measurement of electron thermalization in gold
TL;DR: In this paper, an IR pump beam is used to heat the electron distribution and changes in electron temperature are measured with a visible probe beam at the d band to Fermi-surface transition, showing that the subpicosecond optical response of gold is dominated by delayed thermalization of the electron gas.
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Nonequilibrium electron dynamics in noble metals
N. Del Fatti,Christophe Voisin,Marc Achermann,Stylianos Tzortzakis,Dimitris Christofilos,Fabrice Vallée +5 more
TL;DR: In this paper, two-color femtosecond pump-probe measurements in silver films were used to investigate the electron-electron and electron-lattice interactions in noble metals.
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Direct measurement of the single-metal-cluster optical absorption.
Arnaud Arbouet,D. Christofilos,N. Del Fatti,Fabrice Vallée,J. R. Huntzinger,Laurent Arnaud,P. Billaud,Michel Broyer +7 more
TL;DR: The absorption of a single isolated metal cluster is directly measured using a novel far-field optical technique based on modulation of its position using optically detected single gold nanoparticles dispersed on a transparent substrate.
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Electron-phonon scattering in metal clusters.
Arnaud Arbouet,Christophe Voisin,D. Christofilos,P. Langot,N. Del Fatti,Fabrice Vallée,Jean Lermé,G. Celep,E. Cottancin,M. Gaudry,Michel Pellarin,Michel Broyer,M. Maillard,Marie-Paule Pileni,Mona Treguer +14 more
TL;DR: Femtosecond pump-probe experiments performed in the low-perturbation regime demonstrate a strong increase of the intrinsic electron-phonon interaction for nanoparticles smaller than 10 nm due to a confinement effect.