Search Results - "Billard, F."

Rotational Echoes as a Tool for Investigating Ultrafast Collisional Dynamics of Molecules by Zhang, H, Lavorel, B, Billard, F, Hartmann, J-M, Hertz, E, Faucher, O, Ma, Junyang, Wu, Jian, Gershnabel, Erez, Prior, Yehiam, Averbukh, Ilya Sh

“…We show that recently discovered rotational echoes of molecules provide an efficient tool for studying collisional molecular dynamics in high-pressure gases…”
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A robust k−ε−v2¯/k elliptic blending turbulence model applied to near-wall, separated and buoyant flows by Billard, F., Laurence, D.

“…This paper first reconsiders evolution over 20years of the k−ε−v2¯−f strand of eddy-viscosity models, developed since Durbin’s (1991)original proposal for a…”
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Polarization shaping for unidirectional rotational motion of molecules by Karras, G, Ndong, M, Hertz, E, Sugny, D, Billard, F, Lavorel, B, Faucher, O

“…Control of the orientation of the angular momentum of linear molecules is demonstrated by means of laser polarization shaping. For this purpose, we combine two…”
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Persistent Ground-State Planar Alignment of Iodine Molecule through Resonant Excitation by Bournazel, M, Espaignol, A, Singh, D, Bhalavi, R K, Billard, F, Béjot, P, Hertz, E, Faucher, O

“…We demonstrate the generation of a persistent planar molecular alignment by subjecting a relatively warm gas sample to a resonant femtosecond laser pulse. By…”
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Time‐domain measurement of pure rotational Raman collisional linewidths of ethane C2H6 by Zhang, H., Billard, F., Faucher, O., Lavorel, B.

“…The pure rotational Raman linewidths of the symmetric‐top molecule C2H6 are determined from a time‐resolved femtosecond experiment at room temperature and…”
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Orientation and alignment echoes by Karras, G, Hertz, E, Billard, F, Lavorel, B, Hartmann, J-M, Faucher, O, Gershnabel, Erez, Prior, Yehiam, Averbukh, Ilya Sh

“…We present one of the simplest classical systems featuring the echo phenomenon-a collection of randomly oriented free rotors with dispersed rotational…”
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Turbulence modelling of low Reynolds number flow effects around a vertical axis turbine at a range of tip-speed ratios by McNaughton, J., Billard, F., Revell, A.

“…This paper presents a two-dimensional numerical investigation of a vertical axis turbine with focus on the prediction from two different turbulence modelling…”
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Shaping of ultraviolet femtosecond laser pulses by Fourier domain harmonic generation by Hertz, E, Billard, F, Karras, G, Béjot, P, Lavorel, B, Faucher, O

“…We present a method to finely tailor ultraviolet femtosecond laser pulses using a pulse shaper with ability in the infrared/visible spectral range. We have…”
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Selective excitation of bright and dark plasmonic resonances of single gold nanorods by Demichel, O, Petit, M, Colas des Francs, G, Bouhelier, A, Hertz, E, Billard, F, de Fornel, F, Cluzel, B

“…Plasmonic dark modes are pure near-field resonances since their dipole moments are vanishing in far field. These modes are particularly interesting to enhance…”
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Molecular alignment echoes probing collision-induced rotational-speed changes by Hartmann, J.-M., Ma, J., Delahaye, T., Billard, F., Hertz, E., Wu, J., Lavorel, B., Boulet, C., Faucher, O.

“…We show that the decays with pressure of the rotational alignment echoes induced in N 2 O-He gas mixtures by two ultrashort laser pulses with various delays…”
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Harmonic Generation and Nonlinear Propagation: When Secondary Radiations Have Primary Consequences by Béjot, P., Karras, G., Billard, F., Hertz, E., Lavorel, B., Cormier, E., Faucher, O.

“…In this Letter, it is experimentally and theoretically shown that weak odd harmonics generated during the propagation of an infrared ultrashort ultraintense…”
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Filamentation-induced spectral broadening and pulse shortening of infrared pulses in Tellurite glass by Béjot, P., Billard, F., Peureux, C., Diard, T., Picot-Clémente, J., Strutynski, C., Mathey, P., Mouawad, O., Faucher, O., Nagasaka, K., Ohishi, Y., Smektala, F.

“…Filamentation of infrared femtosecond pulses in Tellurite glass is reported, leading to the generation of a supercontinuum generation spanning from the visible…”
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Expanding up to far-infrared filamentation-induced supercontinuum spanning in chalcogenide glasses by Mouawad, O., Béjot, P., Mathey, P., Froidevaux, P., Lemière, A., Billard, F., Kibler, B., Désévédavy, F., Gadret, G., Jules, J.-C., Faucher, O., Smektala, F.

“…We report on far-infrared filament-induced supercontinuum obtained with three chalcogenide glasses. The introduction of more polarizable elements (Se instead…”
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Application of recently developed elliptic blending based models to separated flows by Billard, F., Revell, A., Craft, T.

“…► The study focuses on elliptic blending near-wall models. ► Models are compared on 2- and 3-dimensional separating flows. ► Conclusions are ambiguous on 2-d…”
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Mid-infrared filamentation-induced supercontinuum in As–S and an As-free Ge–S counterpart chalcogenide glasses by Mouawad, O., Béjot, P., Billard, F., Mathey, P., Kibler, B., Désévédavy, F., Gadret, G., Jules, J.-C., Faucher, O., Smektala, F.

“…We experimentally investigate supercontinuum generation in conventional As 2 S 3 and GeS 3 bulk chalcogenide glass materials pumped by high-power mid-infrared…”
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Dissipation of post-pulse laser-induced alignment of CO2 through collisions with Ar by Chaussard, F., Vieillard, Th, Billard, F., Faucher, O., Hartmann, J.-M., Boulet, C., Lavorel, B.

“…In this paper, laser‐induced field‐free alignment of CO2 in mixtures with Ar is investigated under dissipative conditions (up to 15 bars) at room temperature…”
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Echo-assisted impulsive alignment of room-temperature acetone molecules by Ma, Junyang, Coudert, L. H., Billard, F., Bournazel, M., Lavorel, B., Wu, Jian, Maroulis, G., Hartmann, J.-M., Faucher, O.

“…We experimentally and theoretically investigate the field-free alignment of the asymmetric-top acetone molecule. Our study shows that the production of…”
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A robust k−ε−/k elliptic blending turbulence model applied to near-wall, separated and buoyant flows by Billard, F., Laurence, D.

“…This paper first reconsiders evolution over 20 years of the k - epsilon - v 2 [macr] - f strand of eddy-viscosity models, developed since Durbin's (1991)…”
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Coherent anti-Stokes Raman scattering (CARS) microscopy imaging at interfaces: evidence of interference effects by Gachet, D, Billard, F, Sandeau, N, Rigneault, H

“…We show in this paper that the contrast of the interface between resonant and nonresonant media imaged in Coherent anti-Stokes Raman scattering (CARS)…”
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Fast method for the simultaneous quantification of toxic polyphenols applied to the selection of genotypes of yam bean (Pachyrhizus sp.) seeds by Lautié, E., Rozet, E., Hubert, P., Vandelaer, N., Billard, F., Zum Felde, T., Grüneberg, W.J., Quetin-Leclercq, J.

“…The purpose of the research was to develop and validate a rapid quantification method able to screen many samples of yam bean seeds to determine the content of…”
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