Search Results - "MEJEAN, G"

White-Light Filaments for Atmospheric Analysis by Kasparian, J., Rodriguez, M., Méjean, G., Yu, J., Salmon, E., Wille, H., Bourayou, R., Frey, S., Y. -B. André, Mysyrowicz, A., Sauerbrey, R., J. -P. Wolf, Wöste, L.

“…Most long-path remote spectroscopic studies of the atmosphere rely on ambient light or narrow-band lasers. High-power femtosecond laser pulses have been found…”
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Antarctic winter mercury and ozone depletion events over sea ice by Nerentorp Mastromonaco, M., Gårdfeldt, K., Jourdain, B., Abrahamsson, K., Granfors, A., Ahnoff, M., Dommergue, A., Méjean, G., Jacobi, H.-W.

“…During atmospheric mercury and ozone depletion events in the springtime in polar regions gaseous elemental mercury and ozone undergo rapid declines. Mercury is…”
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Filamentation “remote” sensing of chemical and biological agents/pollutants using only one femtosecond laser source by Chin, S. L., Xu, H. L., Luo, Q., Théberge, F., Liu, W., Daigle, J. F., Kamali, Y., Simard, P. T., Bernhardt, J., Hosseini, S. A., Sharifi, M., Méjean, G., Azarm, A., Marceau, C., Kosareva, O., Kandidov, V. P., Aközbek, N., Becker, A., Roy, G., Mathieu, P., Simard, J. R., Châteauneuf, M., Dubois, J.

“…All matters in the path of filaments induced by an intense femtosecond laser pulse propagating in air could be fragmented and result in the emission of…”
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Multiple filamentation of terawatt laser pulses in air by BERGE, L, SKUPIN, S, BOURAYOU, R, SAUERBREY, R, LEDERER, F, MEJEAN, G, YU, J, KASPARIAN, J, SALMON, E, WOLF, J. P, RODRIGUEZ, M, WÖSTE, L

“…The filamentation of femtosecond light pulses in air is numerically and experimentally investigated for beam powers reaching several TW. Beam propagation is…”
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Cavity-enhanced absorption spectroscopy with a red LED source for NOx trace analysis by Triki, M., Cermak, P., Méjean, G., Romanini, D.

“…Incoherent broad-band cavity-enhanced absorption spectroscopy (IBB-CEAS) based on arc lamps has been around for a few years, but only two reports exist using…”
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Remote detection of similar biological materials using femtosecond filament-induced breakdown spectroscopy by XU, H. L, MEJEAN, G, CHIN, S. L, LIU, W, KAMALI, Y, DAIGLE, J.-F, AZARM, A, SIMARD, P. T, MATHIEU, P, ROY, G, SIMARD, J.-R

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Filamentation of femtosecond light pulses in the air: turbulent cells versus long-range clusters by Skupin, S, Bergé, L, Peschel, U, Lederer, F, Méjean, G, Yu, J, Kasparian, J, Salmon, E, Wolf, J P, Rodriguez, M, Wöste, L, Bourayou, R, Sauerbrey, R

“…The filamentation of ultrashort pulses in air is investigated theoretically and experimentally. From the theoretical point of view, beam propagation is shown…”
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Incoherent broad-band cavity-enhanced absorption spectroscopy for simultaneous trace measurements of NO2 and NO3 with a LED source by Ventrillard-Courtillot, I., Sciamma O’Brien, E., Kassi, S., Méjean, G., Romanini, D.

“…In the past decade, due to a growing awareness of the importance of air quality and air pollution control, many diagnostic tools and techniques have been…”
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Filament-induced remote surface ablation for long range laser-induced breakdown spectroscopy operation by Rohwetter, Ph, Stelmaszczyk, K., Wöste, L., Ackermann, R., Méjean, G., Salmon, E., Kasparian, J., Yu, J., Wolf, J.-P.

“…We demonstrate laser induced ablation and plasma line emission from a metallic target at distances up to 180 m from the laser, using filaments (self-guided…”
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Trace measurement of BrO at the ppt level by a transportable mode-locked frequency-doubled cavity-enhanced spectrometer by Grilli, R., Méjean, G., Kassi, S., Ventrillard, I., Abd-Alrahman, C., Fasci, E., Romanini, D.

“…Pptv levels of BrO radical have been detected around 338.5-nm wavelength probing a rotationally structured A←X (7,0) electronic transition using mode-locked…”
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Simultaneous detection and identification of multigas pollutants using filament-induced nonlinear spectroscopy by Xu, H. L., Kamali, Y., Marceau, C., Simard, P. T., Liu, W., Bernhardt, J., Méjean, G., Mathieu, P., Roy, G., Simard, J.-R., Chin, S. L.

“…The authors report on an approach for simultaneous monitoring of multigas pollutants based on fluorescence emission of trace gases, induced by the…”
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Long range trace detection in aqueous aerosol using remote filament-induced breakdown spectroscopy by DAIGLE, J.-F, MEJEAN, G, ROY, G, SIMARD, J.-R, CHIN, S. L, LIU, W, THEBERGE, F, XU, H. L, KAMALI, Y, BERNHARDT, J, AZARM, A, SUN, Q, MATHIEU, P

“…Remote filament induced breakdown spectroscopy (R-FIBS) is used for probing a cloud of microdroplets where table salt has been dissolved. These microdroplets…”
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Efficient non-gated remote filament-induced breakdown spectroscopy of metallic sample by Liu, W., Xu, H.L., Méjean, G., Kamali, Y., Daigle, J.-F., Azarm, A., Simard, P.T., Mathieu, P., Roy, G., Chin, S.L.

“…Remote filament-induced breakdown spectroscopy (R-FIBS) is a novel technique that could be applied at long distance up to a few kilometers. Our work…”
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Towards a supercontinuum-based infrared lidar by Méjean, G., Kasparian, J., Salmon, E., Yu, J., Wolf, J.-P., Bourayou, R., Sauerbrey, R., Rodriguez, M., Wöste, L., Lehmann, H., Stecklum, B., Laux, U., Eislöffel, J., Scholz, A., Hatzes, A.P.

“…Lidar signals were obtained for the first time in the near-infrared using the supercontinuum generated by the terawatt femtosecond laser of the Teramobile…”
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Triggering and guiding of megavolt discharges by laser-induced filaments under rain conditions by Ackermann, R., Stelmaszczyk, K., Rohwetter, P., Méjean, G., Salmon, E., Yu, J., Kasparian, J., Méchain, G., Bergmann, V., Schaper, S., Weise, B., Kumm, T., Rethmeier, K., Kalkner, W., Wöste, L., Wolf, J. P.

“…We demonstrate laser control of high-voltage discharges over a gap of 1.2 m filled with a dense water cloud. Self-guided filaments generated by ultrashort…”
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Remote detection and identification of biological aerosols using a femtosecond terawatt lidar system by MEJEAN, G, KASPARIAN, J, YU, J, FREY, S, SALMON, E, WOLF, J.-P

“…We demonstrate experimentally the first range-resolved detection and identification of biological aerosols in the air by non-linear lidar. Ultra-short terawatt…”
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Propagation of fs TW laser filaments in adverse atmospheric conditions by MECHAIN, G, MEJEAN, G, WINN, W, SCHLIE, L. A, MYSYROWICZ, A, SAUERBREY, R, WÖSTE, L, WOLF, J.-P, ACKERMANN, R, ROHWETTER, P, ANDRE, Y.-B, KASPARIAN, J, PRADE, B, STELMASZCZYK, K, YU, J, SALMON, E

“…The propagation of femtosecond terawatt laser pulses at reduced pressure (0.7 atm) is investigated experimentally. In such conditions, the non-linear…”
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Long-distance remote laser-induced breakdown spectroscopy using filamentation in air by Stelmaszczyk, Kamil, Rohwetter, Philipp, Méjean, Guillaume, Yu, Jin, Salmon, Estelle, Kasparian, Jérôme, Ackermann, Roland, Wolf, Jean-Pierre, Wöste, Ludger

“…We demonstrate remote elemental analysis at distances up to 90m, using a laser-induced breakdown spectroscopy scheme based on filamentation induced by the…”
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Cavity-enhanced multiplexed comb spectroscopy down to the photon shot noise by Grilli, R., Méjean, G., Abd Alrahman, C., Ventrillard, I., Kassi, S., Romanini, D.

“…We demonstrate quantum-noise-limited frequency-comb cavity-enhanced absorption spectroscopy with spectrally multiplexed detection for acquisition times ranging…”
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Influence of negative leader propagation on the triggering and guiding of high voltage discharges by laser filaments by ACKERMANN, R, MECHAIN, G, ANDRE, Y.-B, BOURRILLON, J.-F, TAMIN, L, CASCELLI, J.-P, CAMPO, C, DAVOISE, C, MYSYROWICZ, A, SAUERBREY, R, WÖSTE, L, WOLF, J.-P, MEJEAN, G, BOURAYOU, R, RODRIGUEZ, M, STELMASZCZYK, K, KASPARIAN, J, YU, J, SALMON, E, TZORTZAKIS, S

“…The triggering and guiding of negative discharges using filaments induced by a femtosecond-terawatt laser pulse have been studied in sphere-plane gaps up to…”
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