Search Results - "Combis, P."

Optically controlled solid-density transient plasma gratings by Monchocé, S, Kahaly, S, Leblanc, A, Videau, L, Combis, P, Réau, F, Garzella, D, D'Oliveira, P, Martin, Ph, Quéré, F

“…A general approach for optically controlled spatial structuring of overdense plasmas generated at the surface of initially plain solid targets is presented. We…”
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Hydrodynamic simulations of metal ablation by femtosecond laser irradiation by COLOMBIER, J. P, COMBIS, P, BONNEAU, F, LE HARZIC, R, AUDOUARD, E

“…Ablation of Cu and Al targets has been performed with 170 fs laser pulses in the intensity range of 10^12-10^14 W/cm^2. We compare the measured removal depth…”
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Development of a numerical code for laser-induced shock waves applications by Bardy, S., Aubert, B., Bergara, T., Berthe, L., Combis, P., Hébert, D., Lescoute, E., Rouchausse, Y., Videau, L.

“…•For the first time, Numerical simulations of all prpcesses in the same code occuring in Laser shock adhesion test.•Laser matter interaction in direct and…”
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Picosecond short-range disordering in isochorically heated aluminum at solid density by Mancić, A, Lévy, A, Harmand, M, Nakatsutsumi, M, Antici, P, Audebert, P, Combis, P, Fourmaux, S, Mazevet, S, Peyrusse, O, Recoules, V, Renaudin, P, Robiche, J, Dorchies, F, Fuchs, J

“…Using ultrafast x-ray probing, we experimentally observed a progressive loss of ordering within solid-density aluminum as the temperature raises from 300 K to…”
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Ultrafast short-range disordering of femtosecond-laser-heated warm dense aluminum by Leguay, P M, Lévy, A, Chimier, B, Deneuville, F, Descamps, D, Fourment, C, Goyon, C, Hulin, S, Petit, S, Peyrusse, O, Santos, J J, Combis, P, Holst, B, Recoules, V, Renaudin, P, Videau, L, Dorchies, F

“…We have probed, with time-resolved x-ray absorption near-edge spectroscopy (XANES), a femtosecond-laser-heated aluminum foil with fluences up to 1  J/cm2. The…”
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Unraveling the solid-liquid-vapor phase transition dynamics at the atomic level with ultrafast x-ray absorption near-edge spectroscopy by Dorchies, F, Lévy, A, Goyon, C, Combis, P, Descamps, D, Fourment, C, Harmand, M, Hulin, S, Leguay, P M, Petit, S, Peyrusse, O, Santos, J J

“…X-ray absorption near-edge spectroscopy (XANES) is a powerful probe of electronic and atomic structures in various media, ranging from molecules to condensed…”
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Guiding heat in laser ablation of metals on ultrafast timescales: an adaptive modeling approach on aluminum by Colombier, J P, Combis, P, Audouard, E, Stoian, R

“…Using an optimal control hydrodynamic modeling approach and irradiation adaptive time-design, we indicate excitation channels maximizing heat load in laser…”
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Dynamic cratering of graphite: Experimental results and simulations by Seisson, G., Hébert, D., Bertron, I., Chevalier, J.-M., Hallo, L., Lescoute, E., Videau, L., Combis, P., Guillet, F., Boustie, M., Berthe, L.

“…The cratering process in brittle materials under hypervelocity impact (HVI) is of major relevance for debris shielding in spacecraft or high-power laser…”
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High shock release in ultrafast laser irradiated metals: Scenario for material ejection by Colombier, J. P., Combis, P., Stoian, R., Audouard, E.

“…We present one-dimensional numerical simulations describing the behavior of solid matter exposed to subpicosecond near infrared pulsed laser radiation. We…”
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Isochoric heating of solids by laser-accelerated protons: Experimental characterization and self-consistent hydrodynamic modeling by Mancic, A., Robiche, J., Antici, P., Audebert, P., Blancard, C., Combis, P., Dorchies, F., Faussurier, G., Fourmaux, S., Harmand, M., Kodama, R., Lancia, L., Mazevet, S., Nakatsutsumi, M., Peyrusse, O., Recoules, V., Renaudin, P., Shepherd, R., Fuchs, J.

“…A study of isochoric heating of Al foil by laser-accelerated proton beam is presented, coupling self-consistent hydrodynamic simulations (including proton…”
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Effect of a nanometer scale plasma on laser-accelerated ion beams by Lévy, A, Nuter, R, Ceccotti, T, Combis, P, Drouin, M, Gremillet, L, Monot, P, Popescu, H, Réau, F, Lefebvre, E, Martin, P

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Controlling energy coupling and particle ejection from aluminum surfaces irradiated with ultrashort laser pulses by Colombier, J.P., Audouard, E., Combis, P., Rosenfeld, A., Hertel, I.V., Stoian, R.

“…Hydrodynamic simulations are used to evaluate the potential of ultrashort laser pulses to localize energy at metallic surfaces, in our case aluminum. The…”
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Photothermal investigation of the laser-induced modification of a single gold nano-particle in a silica film by Bertussi, B., Natoli, J.-Y., Commandre, M., Rullier, J.-L., Bonneau, F., Combis, P., Bouchut, P.

“…Absorbing defects are believed to induce thermal effects that lead to laser damage, but the correlation between defect absorption and damage has not been…”
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Study of UV laser interaction with gold nanoparticles embedded in silica by BONNEAU, F, COMBIS, P, GALLAIS, L, NATOLI, J. Y, PERRA, M, BERCEGOL, H, LAMAIGNERE, L, LOISEAU, M, DONOHUE, J. T, RULLIER, J. L, VIERNE, J, PELLIN, M, SAVINA, M, BROYER, M, COTTANCIN, E, TUAILLON, J, PELLARIN, M

“…In order to resolve problems concerning the understanding and the control of laser-induced damage of silica optical elements, a collaboration between the CEA…”
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Numerical simulations for description of UV laser interaction with gold nanoparticles embedded in silica by BONNEAU, F, COMBIS, P, DONOHUE, J. T, RULLIER, J. L, VIERNE, J, BERTUSSI, B, COMMANDRE, M, GALLAIS, L, NATOLI, J. Y, BERTRON, I, MALAISE, F

“…We have performed simulations of laser energy deposition in an engineered absorbing defect (i.e. metal nanoparticle) and the surrounding fused silica taking…”
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Study of spallation by sub-picosecond laser driven shocks in metals by Soulard, Laurent, Cuq-Lelandais, J.-P., Boustie, M., Soulard, L., Berthe, L., De Rességuier, T., Combis, P., Bontaz-Carion, J., Lescoute, E.

“…Spallation induced by a laser driven shock has been studied for two decades on time scales of nanosecond order. The evolution of laser technologies now…”
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Observation by photothermal microscopy of increased silica absorption in laser damage induced by gold nanoparticles by Bonneau, F., Combis, P., Rullier, J. L., Commandré, M., During, A., Natoli, J. Y., Pellin, M. J., Savina, M. R., Cottancin, E., Pellarin, M.

“…In order to understand laser-induced damage in glass, we subjected engineered SiO2 thin films containing sub-micron gold inclusions to high fluences, and…”
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Transient optical response of ultrafast nonequilibrium excited metals: effects of electron-electron contribution to collisional absorption by Colombier, J P, Combis, P, Audouard, E, Stoian, R

“…Approaching energy coupling in laser-irradiated metals, we point out the role of electron-electron collision as an efficient control factor for ultrafast…”
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Removal of scratches on fused silica optics by using a CO2 laser by Cormont, Philippe, Combis, Patrick, Gallais, Laurent, Hecquet, Christophe, Lamaignère, Laurent, Rullier, Jean-Luc

“…We investigate the efficiency of local CO2 laser processing of scratches on silica optics in order to enhance the nanosecond UV-laser damage resistance. The…”
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Impact of two CO2 laser heatings for damage repairing on fused silica surface by Cormont, Philippe, Gallais, Laurent, Lamaignère, Laurent, Rullier, Jean-Luc, Combis, Patrick, Hebert, D.

“…CO2 laser is an interesting tool to repair defects on silica optics. We studied UV nanosecond laser-induced damage in fused silica after CO2 laser heating. The…”
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