P
Pascal Ruello
Researcher at Centre national de la recherche scientifique
Publications - 76
Citations - 1975
Pascal Ruello is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Laser & Phonon. The author has an hindex of 21, co-authored 70 publications receiving 1644 citations. Previous affiliations of Pascal Ruello include University of Paris-Sud & French Alternative Energies and Atomic Energy Commission.
Papers
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Journal ArticleDOI
Physical mechanisms of coherent acoustic phonons generation by ultrafast laser action
Pascal Ruello,Vitalyi Gusev +1 more
TL;DR: This review addresses the microscopic mechanisms that are involved in the photogeneration processes of GHz-THz coherent acoustic phonons (CAP) induced by an ultrafast laser pulse, discussing the deformation potential mechanism, the thermoelasticity, the inverse piezoelectric effect and the electrostriction in condensed matter.
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Nanophononics: state of the art and perspectives
Sebastian Volz,Jose Ordonez-Miranda,Andrey Shchepetov,Mika Prunnila,Jouni Ahopelto,Thomas Pezeril,Gwenaelle Vaudel,Vitaly Gusev,Pascal Ruello,Eva M. Weig,Martin Schubert,Mike Hettich,Martin Grossman,Thomas Dekorsy,Francesc Alzina,Bartlomiej Graczykowski,Emigdio Chavez-Angel,J. Sebastian Reparaz,Markus R. Wagner,Clivia M. Sotomayor-Torres,Shiyun Xiong,Sanghamitra Neogi,Sanghamitra Neogi,Davide Donadio +23 more
TL;DR: In this article, the authors assess the state of the art of nanophononics, describing the recent achievements and the open challenges in nanoscale heat transport, coherent phonon generation and exploitation, and in nano- and optomechanics.
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Giant ultrafast photo-induced shear strain in ferroelectric BiFeO3.
Mariusz Lejman,Gwenaelle Vaudel,Ingrid C. Infante,P. Gemeiner,Vitalyi Gusev,Brahim Dkhil,Pascal Ruello +6 more
TL;DR: It is found that the major mechanism involved corresponds to screening of the internal electric fields by light-induced charges, which in turn induces stress by inverse piezoelectric effect, which opens new perspectives for the use of ferroelectric oxides in ultrahigh frequency acoustic devices and the development of new GHz-THz acoustic sources.
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Generation and detection of plane coherent shear picosecond acoustic pulses by lasers: Experiment and theory
Thomas Pezeril,Pascal Ruello,S. Gougeon,Nikolay Chigarev,D. Mounier,J.-M. Breteau,Pascal Picart,Vitalyi Gusev +7 more
TL;DR: In this paper, a nonlocal volumetric mechanism of plane shear sound excitation is revealed and a modification of the temporal shape of the reflectivity signal with variation in probe light polarization is observed, both attributed to asynchronous propagation of the acoustic eigenmodes.
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Advances in applications of time-domain Brillouin scattering for nanoscale imaging
Vitalyi Gusev,Pascal Ruello +1 more
TL;DR: Time-domain Brillouin scattering is an all-optical experimental technique based on ultrafast lasers applied for generation and detection of coherent acoustic pulses on time durations of picoseconds and length scales of nanometers as mentioned in this paper.