Search Results - "Helml, W"

Attosecond time–energy structure of X-ray free-electron laser pulses by Hartmann, N., Hartmann, G., Heider, R., Wagner, M. S., Ilchen, M., Buck, J., Lindahl, A. O., Benko, C., Grünert, J., Krzywinski, J., Liu, J., Lutman, A. A., Marinelli, A., Maxwell, T., Miahnahri, A. A., Moeller, S. P., Planas, M., Robinson, J., Kazansky, A. K., Kabachnik, N. M., Viefhaus, J., Feurer, T., Kienberger, R., Coffee, R. N., Helml, W.

“…The time–energy information of ultrashort X-ray free-electron laser pulses generated by the Linac Coherent Light Source is measured with attosecond resolution…”
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Measuring the temporal structure of few-femtosecond free-electron laser X-ray pulses directly in the time domain by Helml, W., Maier, A. R., Schweinberger, W., Grguraš, I., Radcliffe, P., Doumy, G., Roedig, C., Gagnon, J., Messerschmidt, M., Schorb, S., Bostedt, C., Grüner, F., DiMauro, L. F., Cubaynes, D., Bozek, J. D., Tschentscher, Th, Costello, J. T., Meyer, M., Coffee, R., Düsterer, S., Cavalieri, A. L., Kienberger, R.

“…Short-wavelength free-electron lasers are now well established as essential and unrivalled sources of ultrabright coherent X-ray radiation. One of the key…”
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Generating femtosecond X-ray pulses using an emittance-spoiling foil in free-electron lasers by Ding, Y., Behrens, C., Coffee, R., Decker, F.-J., Emma, P., Field, C., Helml, W., Huang, Z., Krejcik, P., Krzywinski, J., Loos, H., Lutman, A., Marinelli, A., Maxwell, T. J., Turner, J.

“…Generation of femtosecond to sub-femtosecond pulses is attracting much attention in X-ray free-electron laser user community. One method is to use a slotted,…”
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Dual-energy electron beams from a compact laser-driven accelerator by Wenz, J., Döpp, A., Khrennikov, K., Schindler, S., Gilljohann, M. F., Ding, H., Götzfried, J., Buck, A., Xu, J., Heigoldt, M., Helml, W., Veisz, L., Karsch, S.

“…Ultrafast pump–probe experiments open the possibility to track fundamental material behaviour, such as changes in electronic configuration, in real time. To…”
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Accurate prediction of X-ray pulse properties from a free-electron laser using machine learning by Sanchez-Gonzalez, A., Micaelli, P., Olivier, C., Barillot, T. R., Ilchen, M., Lutman, A. A., Marinelli, A., Maxwell, T., Achner, A., Agåker, M., Berrah, N., Bostedt, C., Bozek, J. D., Buck, J., Bucksbaum, P. H., Montero, S. Carron, Cooper, B., Cryan, J. P., Dong, M., Feifel, R., Frasinski, L. J., Fukuzawa, H., Galler, A., Hartmann, G., Hartmann, N., Helml, W., Johnson, A. S., Knie, A., Lindahl, A. O., Liu, J., Motomura, K., Mucke, M., O’Grady, C., Rubensson, J-E, Simpson, E. R., Squibb, R. J., Såthe, C., Ueda, K., Vacher, M., Walke, D. J., Zhaunerchyk, V., Coffee, R. N., Marangos, J. P.

“…Free-electron lasers providing ultra-short high-brightness pulses of X-ray radiation have great potential for a wide impact on science, and are a critical…”
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Single-shot carrier-envelope phase measurement of few-cycle laser pulses by Kienberger, R, Wittmann, T, Horvath, B, Helml, W, Schätzel, M. G, Gu, X, Cavalieri, A. L, Paulus, G. G

“…Full characterization of single ultrashort laser pulses, as needed for attosecond metrology and spectroscopy, requires precise measurement of the offset…”
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Clocking Auger electrons by Haynes, D. C., Wurzer, M., Schletter, A., Al-Haddad, A., Blaga, C., Bostedt, C., Bozek, J., Bromberger, H., Bucher, M., Camper, A., Carron, S., Coffee, R., Costello, J. T., DiMauro, L. F., Ding, Y., Ferguson, K., Grguraš, I., Helml, W., Hoffmann, M. C., Ilchen, M., Jalas, S., Kabachnik, N. M., Kazansky, A. K., Kienberger, R., Maier, A. R., Maxwell, T., Mazza, T., Meyer, M., Park, H., Robinson, J., Roedig, C., Schlarb, H., Singla, R., Tellkamp, F., Walker, P. A., Zhang, K., Doumy, G., Behrens, C., Cavalieri, A. L.

“…Intense X-ray free-electron lasers (XFELs) can rapidly excite matter, leaving it in inherently unstable states that decay on femtosecond timescales. The…”
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Femtosecond x-ray pulse length characterization at the Linac Coherent Light Source free-electron laser by Düsterer, S, Radcliffe, P, Bostedt, C, Bozek, J, Cavalieri, A L, Coffee, R, Costello, J T, Cubaynes, D, DiMauro, L F, Ding, Y, Doumy, G, Grüner, F, Helml, W, Schweinberger, W, Kienberger, R, Maier, A R, Messerschmidt, M, Richardson, V, Roedig, C, Tschentscher, T, Meyer, M

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Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers by Hartmann, N., Helml, W., Galler, A., Bionta, M. R., Grünert, J., L. Molodtsov, S., Ferguson, K. R., Schorb, S., Swiggers, M. L., Carron, S., Bostedt, C., Castagna, J.-C., Bozek, J., Glownia, J. M., Kane, D. J., Fry, A. R., White, W. E., Hauri, C. P., Feurer, T., Coffee, R. N.

“…Some X-ray free-electron laser facilities are pushing towards sub-10 fs pulses, making it desirable to reduce errors in X-ray/optical delay measurements to the…”
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Femtosecond profiling of shaped x-ray pulses by Hoffmann, M C, Grguraš, I, Behrens, C, Bostedt, C, Bozek, J, Bromberger, H, Coffee, R, Costello, J T, DiMauro, L F, Ding, Y, Doumy, G, Helml, W, Ilchen, M, Kienberger, R, Lee, S, Maier, A R, Mazza, T, Meyer, M, Messerschmidt, M, Schorb, S, Schweinberger, W, Zhang, K, Cavalieri, A L

“…Arbitrary manipulation of the temporal and spectral properties of x-ray pulses at free-electron lasers would revolutionize many experimental applications. At…”
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Controlling Fragmentation of the Acetylene Cation in the Vacuum Ultraviolet via Transient Molecular Alignment by Varvarezos, L., Delgado-Guerrero, J., Di Fraia, M., Kelly, T. J., Palacios, A., Callegari, C., Cavalieri, A. L., Coffee, R., Danailov, M., Decleva, P., Demidovich, A., DiMauro, L., Düsterer, S., Giannessi, L., Helml, W., Ilchen, M., Kienberger, R., Mazza, T., Meyer, M., Moshammer, R., Pedersini, C., Plekan, O., Prince, K. C., Simoncig, A., Schletter, A., Ueda, K., Wurzer, M., Zangrando, M., Martín, F., Costello, J. T.

“…An open-loop control scheme of molecular fragmentation based on transient molecular alignment combined with single-photon ionization induced by a…”
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Intense 1.5-cycle near infrared laser waveforms and their use for the generation of ultra-broadband soft-x-ray harmonic continua by Cavalieri, A L, Goulielmakis, E, Horvath, B, Helml, W, Schultze, M, Fieß, M, Pervak, V, Veisz, L, Yakovlev, V S, Uiberacker, M, Apolonski, A, Krausz, F, Kienberger, R

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Propagation-enhanced generation of intense high-harmonic continua in the 100-eV spectral region by Rivas, D. E., Major, B., Weidman, M., Helml, W., Marcus, G., Kienberger, R., Charalambidis, D., Tzallas, P., Balogh, E., Kovács, K., Tosa, V., Bergues, B., Varjú, K., Veisz, L.

“…The study of core electron dynamics through nonlinear spectroscopy requires intense isolated attosecond extremeultraviolet or even X-ray pulses. A robust way…”
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Attosecond control of tunneling ionization and electron trajectories by Fieß, M, Horvath, B, Wittmann, T, Helml, W, Cheng, Y, Zeng, B, Xu, Z, Scrinzi, A, Gagnon, J, Krausz, F, Kienberger, R

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Tabletop nonlinear optics in the 100-eV spectral region by Bergues, B., Rivas, D. E., Weidman, M., Muschet, A. A., Helml, W., Guggenmos, A., Pervak, V., Kleineberg, U., Marcus, G., Kienberger, R., Charalambidis, D., Tzallas, P., Schröder, H., Krausz, F., Veisz, L.

“…Nonlinear light-matter interactions in the extreme ultraviolet (XUV) are a prerequisite to perform XUV-pump/XUV-probe spectroscopy of core electrons. Such…”
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Generating femtosecond X-ray pulses using an emittance-spoiling foil in free-electron lasers by Ding, Y., Behrens, C., Coffee, R., Decker, F. -J., Emma, P., Field, C., Helml, W., Huang, Z., Krejcik, P., Krzywinski, J., Loos, H., Lutman, A., Marinelli, A., Maxwell, T. J., Turner, J.

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Generating femtosecond X-ray pulses using an emittance-spoiling foil in free-electron lasers by Ding, Y., Coffee, R., Decker, F.-J., Emma, P., Field, C., Huang, Z., Krejcik, P., Krzywinski, J., Loos, H., Lutman, A., Marinelli, A., Maxwell, T. J., Turner, J., Behrens, C., Helml, W.

“…Generation of femtosecond to sub-femtosecond pulses is attracting much attention in X-ray free-electron laser user community. One method is to use a slotted,…”
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Sub-femtosecond free-electron laser pulses by Helml, W., Maier, A. R., Schweinberger, W., Grguras, I., Radcliffe, P., Doumy, G., Roedig, C., Gagnon, J., Messerschmidt, M., Schorb, S., Bostedt, C., Gruner, F., DiMauro, L. F., Cubaynes, D., Bozek, J. D., Tschentscher, T., Costello, J. T., Meyer, M., Coffee, R., Dusterer, S., Cavalieri, A. L., Kienberger, R.

“…Deploying the so-called `Streaking Spectroscopy' technique at LCLS, we demonstrate a non-invasive scheme for temporal characterization of X-ray pulses with…”
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Sub-fs precision measurement of relative x-ray arrival time for FELs by Hartmann, N., Helml, W., Bionta, M. R., Galler, A., Grunert, J., Molodtsov, S., Ferguson, K. R., Schorb, S., Swiggers, M. L., Carron, S., Bostedt, C., Castagna, J.-C., Bozek, J., Glownia, J. M., Kane, D. J., Fry, A. R., White, W. E., Hauri, C. P., Feurer, T., Coffee, R. N.

“…We present a spectrogram-based timing technique for x-ray free electron lasers (XFELs) that reports x-ray/optical delay below 1 fs RMS error to correct for…”
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Dual-energy electron beams from a compact laser-driven accelerator by Wenz, J, Khrennikov, K, Döpp, A, Gilljohann, M, Ding, H, Goetzfried, J, Schindler, S, Buck, A, Xu, J, Heigoldt, M, Helml, W, Veisz, L, Karsch, S

“…Nature Photonics 13, 263-269 (2019) Ultrafast pump-probe experiments open the possibility to track fundamental material behaviour like changes in its…”
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