Search Results - "Schapper, F."

Attosecond electron wave-packet interference observed by transient absorption by Holler, M, Schapper, F, Gallmann, L, Keller, U

“…We perform attosecond time-resolved transient absorption spectroscopy around the first ionization threshold of helium and observe rapid oscillations of the…”
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Quantum path interferences in high-order harmonic generation by Zaïr, A, Holler, M, Guandalini, A, Schapper, F, Biegert, J, Gallmann, L, Keller, U, Wyatt, A S, Monmayrant, A, Walmsley, I A, Cormier, E, Auguste, T, Caumes, J P, Salières, P

“…We have investigated the intensity dependence of high-order harmonic generation in argon when the two shortest quantum paths contribute to the harmonic…”
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High harmonic generation in a gas-filled hollow-core photonic crystal fiber by Heckl, O. H., Baer, C. R. E., Kränkel, C., Marchese, S. V., Schapper, F., Holler, M., Südmeyer, T., Robinson, J. S., Tisch, J. W. G., Couny, F., Light, P., Benabid, F., Keller, U.

“…High harmonic generation (HHG) of intense infrared laser radiation (Ferray et al., J. Phys. B: At. Mol. Opt. Phys. 21:L31, 1988 ; McPherson et al., J. Opt…”
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Spatio-temporal characterization of few-cycle pulses obtained by filamentation by Zaïr, A, Guandalini, A, Schapper, F, Holler, M, Biegert, J, Gallmann, L, Couairon, A, Franco, M, Mysyrowicz, A, Keller, U

“…Intense sub-5-fs pulses were generated by filamentation in a noble gas and subsequent chirped-mirror pulse compression. The transversal spatial dependence of…”
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Spatial fingerprint of quantum path interferences in high order harmonic generation by Schapper, F, Holler, M, Auguste, T, Zaïr, A, Weger, M, Salières, P, Gallmann, L, Keller, U

“…We have spatially and spectrally resolved the high order harmonic emission from an argon gas target. Under proper phase matching conditions we were able to…”
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Spectral signature of short attosecond pulse trains by Mansten, E, Dahlström, J M, Mauritsson, J, Ruchon, T, L'huillier, A, Tate, J, Gaarde, M B, Eckle, P, Guandalini, A, Holler, M, Schapper, F, Gallmann, L, Keller, U

“…We report experimental measurements of high-order harmonic spectra generated in Ar using a carrier-envelope-offset (CEO) stabilized 12 fs, 800 nm laser field…”
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Ionization effects on spectral signatures of quantum-path interference in high-harmonic generation by Holler, M, Zaïr, A, Schapper, F, Auguste, T, Cormier, E, Wyatt, A, Monmayrant, A, Walmsley, I A, Gallmann, L, Salières, P, Keller, U

“…The interference between the emission originating from the short and long electron quantum paths is intrinsic to the high harmonic generation process. We…”
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Ultrafast dynamics of delocalized and localized electrons in carbon nanotubes by Perfetti, L, Kampfrath, T, Schapper, F, Hagen, A, Hertel, T, Aguirre, C M, Desjardins, P, Martel, R, Frischkorn, C, Wolf, M

“…We report on the dynamics of the dielectric function of single-wall carbon nanotubes in the 10-30 THz frequency range after ultrafast laser excitation. The…”
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Direct observation of quantum-path interferences in high order harmonic generation by Cormier, E., Zaïr, A., Holler, M., Schapper, F., Keller, U., Wyatt, A., Monmayrant, A., Walmsley, I., Auguste, T., Salières, P.

“…Intensity dependent high harmonic generation was investigated when both short and long trajectories contribute to the emission. We have directly observed for…”
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Strongly coupled optical phonons in the ultrafast dynamics of the electronic energy and current relaxation in graphite by KAMPFRATH, Tobias, PERFETTI, Luca, SCHAPPER, Florian, FRISCHKOM, Christian, WOLF, Martin

“…Ultrafast charge carrier dynamics in graphite has been investigated by time-resolved terahertz spectroscopy. Analysis of the transient dielectric function and…”
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Time-resolved THz spectroscopy: charge carrier dynamics and the role of strongly coupled optical phonons in ultrathin graphite sheets by Frischkorn, C., Kampfrath, T., Perfetti, L., Schapper, F., Wolf, M.

“…Ultrafast charge carrier dynamics in graphite are investigated by time-resolved THz spectroscopy. Our data show that: (i) more than 90% of the initially…”
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Non-linear evanescent-field imaging by Oheim, M., Schapper, F.

“…Summary form only given. The cell surface is a 2-D membrane compartment relaying most cellular signals. We use multiparameter evanescent-field imaging and…”
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Fluorescence imaging with two-photon evanescent wave excitation by Schapper, Florian, Gonçalves, José Tiago, Oheim, Martin

“…We demonstrate broad-field, non-scanning, two-photon excitation fluorescence (2PEF) close to a glass/cell interface by total internal reflection of a…”
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Theoretical and experimental analysis of quantum path interferences in high-order harmonic generation by Auguste, T., Salières, P., Wyatt, A. S., Monmayrant, A., Walmsley, I. A., Cormier, E., Zaïr, A., Holler, M., Guandalini, A., Schapper, F., Biegert, J., Gallmann, L., Keller, U.

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Quantum path interferences in high-harmonic generation: Ionization effects and spatial structure by Gallmann, L., Holler, M., Zair, A., Schapper, F., Auguste, T., Cormier, E., Wyatt, A., Monmayrant, A., Walmsley, I.A., Salieres, P., Keller, U.

“…We investigate the influence of microscopic and macroscopic ionization effects on the intensity-dependent quantum-path interferences in high-harmonic…”
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First demonstration of high harmonic generation (HHG) in a hollow-core photonic crystal fiber by Heckl, H., Baer, C.R.E., Krankel, C., Marchese, S.V., Schapper, F., Holler, M., Sudmeyer, T., Keller, U., Robinson, J.S., Tisch, J.W.G., Couny, F., Light, P., Benabid, F., Russell, P.S.J.

“…We report the first HHG in a hollow-core photonic crystal fiber. We generate the 7 th -13 th harmonic of ap800 nm in xenon. The extremely low threshold of 0.4…”
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Two-quantum-path interferences in high order harmonic generation by Zair, A., Holler, M., Guandalini, A., Schapper, F., Biegert, J., Keller, U., Salieres, P., Auguste, T., Cormier, E., Wyatt, A., Monmayrant, A., Walmsley, I.

“…We have investigated intensity dependent high-harmonic generation, when short and long trajectories are both visible in the generated signal. We have measured…”
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Direct optical observation of attosecond electron wavepacket interference by Gallmann, L., Holler, M., Schapper, F., Keller, U.

“…Recently, the ionization probability of helium atoms with APT photon energies below the ionization threshold in presence of a time-delayed infrared (IR) field…”
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Spatio-Temporal Characterization of Sub-5-fs Pulses Obtained by Filamentation by Zair, A., Guandalini, A., Schapper, F., Holler, M., Biegert, J., Gallmann, L., Keller, U., Couairon, A., Franco, M., Mysyrowicz, A.

“…Summary form only given. Pulse compression through filamentation to the two-optical-cycle regime has been demonstrated, including its capability of maintaining…”
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Spectral signature of short attosecond pulse trains by Mansten, E, Dahlstrom, J. M, Mauritsson, J, Ruchon, T, LHuillier, A, Tate, J, Gaarde, M. B, Eckle, P, Guandalini, A, Holler, M, Schapper, F, Gallmann, L, Keller, U

“…We report experimental measurements of high-order harmonic spectra generated in Ar using a carrier-envelope-offset (CEO) stabilized 12 fs, 800nm laser field…”
Get full text