Results 21 to 30 of about 201,538 (315)

Pump-probe X-ray holographic imaging of laser-induced cavitation bubbles with femtosecond FEL pulses

Nature Communications, 2021
Cavitation bubbles show many nonlinear characteristics of liquid and gas phase. Here the authors demonstrate coherent diffractive imaging of cavitation bubble using infrared pump and XFEL probe and discuss the formation and evolution of the bubbles.
M. Vassholz, H. P. Hoeppe, J. Hagemann, J. M. Rosselló, M. Osterhoff, R. Mettin, T. Kurz, A. Schropp, F. Seiboth, C. G. Schroer, M. Scholz, J. Möller, J. Hallmann, U. Boesenberg, C. Kim, A. Zozulya, W. Lu, R. Shayduk, R. Schaffer, A. Madsen, T. Salditt   +20 more
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Optical guiding in a free electron laser [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1985
Abstract The coherent interaction between an optical wave and an electron beam in a free electron laser (FEL) is shown to be capable of optically guiding the light. The effect is analyzed using a two-dimensional approximation for the FEL equations, and using the properties of optical fibers.
Scharlemann, E. T., Sessler, A. M., Wurtele, J. S.   +2 more
openaire   +2 more sources

Polarization-state-resolved high-harmonic spectroscopy of solids

Nature Communications, 2019
High-harmonic generation in solids is related to the carrier dynamics and can be used to probe dynamic processes. Here, Klemke et al. show that the polarization states of high harmonics generated from silicon and quartz are determined by the crystal ...
N. Klemke, N. Tancogne-Dejean, G. M. Rossi, Y. Yang, F. Scheiba, R. E. Mainz, G. Di Sciacca, A. Rubio, F. X. Kärtner, O. D. Mücke   +9 more
doaj   +1 more source

Ultrashort ultraviolet free-electron lasers [PDF]

Journal of X-Ray Science and Technology, 1994
In this work we combine elements of chirped pulse amplification (CPA) techniques, now familiar in solid-state lasers, with an amplifier based upon a seeded free-electron laser (FEL). The resulting device would produce amplified pulses of unprecedented brevity at wavelengths shorter than can be currently obtained by any tunable laser system.
Umstadter, Donald, Yu, L. H., Johnson, E., Li, D.   +3 more
openaire   +3 more sources

Nanometer-resolution hard X-ray near-field ptychography with multilayer Laue lenses [PDF]

EPJ Web of Conferences
In coherent X-ray diffraction imaging, resolution is limited by the scattering power of the sample, where high-angle signals are weak and compete with background and noise.
Zhang Wenhui, Dresselhaus Jan Lukas, Fleckenstein Holger, Prasciolu Mauro, Zakharova Margarita, Ivanov Nikolay, Li Chufeng, Yefanov Oleksandr, Li Tang, Egorov Dmitry, Aquino Ivan De Gennaro, Middendorf Philipp, Bajt Sasa, Chapman Henry   +13 more
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Simple convergent-nozzle aerosol injector for single-particle diffractive imaging with X-ray free-electron lasers

Structural Dynamics, 2015
A major challenge in high-resolution x-ray free-electron laser-based coherent diffractive imaging is the development of aerosol injectors that can efficiently deliver particles to the peak intensity of the focused X-ray beam. Here, we consider the use of
R. A. Kirian, S. Awel, N. Eckerskorn, H. Fleckenstein, M. Wiedorn, L. Adriano, S. Bajt, M. Barthelmess, R. Bean, K. R. Beyerlein, L. M. G. Chavas, M. Domaracky, M. Heymann, D. A. Horke, J. Knoska, M. Metz, A. Morgan, D. Oberthuer, N. Roth, T. Sato, P. L. Xavier, O. Yefanov, A. V. Rode, J. Küpper, H. N. Chapman   +24 more
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Microsecond hydrodynamic interactions in dense colloidal dispersions probed at the European XFEL

IUCrJ, 2021
Many soft-matter systems are composed of macromolecules or nanoparticles suspended in water. The characteristic times at intrinsic length scales of a few nanometres fall therefore in the microsecond and sub-microsecond time regimes.
Francesco Dallari, Avni Jain, Marcin Sikorski, Johannes Möller, Richard Bean, Ulrike Boesenberg, Lara Frenzel, Claudia Goy, Jörg Hallmann, Yoonhee Kim, Irina Lokteva, Verena Markmann, Grant Mills, Angel Rodriguez-Fernandez, Wojciech Roseker, Markus Scholz, Roman Shayduk, Patrik Vagovic, Michael Walther, Fabian Westermeier, Anders Madsen, Adrian P. Mancuso, Gerhard Grübel, Felix Lehmkühler   +23 more
doaj   +1 more source

Bayesian Optimization of a Free-Electron Laser

Physical Review Letters, 2020
6 pages, 3 ...
J. Duris, D. Kennedy, A. Hanuka, J. Shtalenkova, A. Edelen, P. Baxevanis, A. Egger, T. Cope, M. McIntire, S. Ermon, D. Ratner   +10 more
openaire   +4 more sources

Ultrafast light-induced dynamics in the microsolvated biomolecular indole chromophore with water

Nature Communications, 2022
Experimentally following the ultrafast dynamics of microsolvated molecules is challenging due to the inherently produced soup mix of various gas-phase aggregates.
Jolijn Onvlee, Sebastian Trippel, Jochen Küpper   +2 more
doaj   +1 more source

Minimizing attosecond CEP jitter by carrier envelope phase tuning [PDF]

EPJ Web of Conferences, 2019
Minimizing the CEP jitter of isolated attosecond pulses (IAP) will be important for future applications. This jitter is experimentally and theoretically investigated and can be minimized when the driving pulse is near its Fourier limit but with slightly ...
Prandolini Mark. J., Gaumnitz Thomas, Kothe Alexander, Henkel Jost, Schneider Joachim, Hengster Julia, Drescher Markus, Lein Manfred, Uphues Thorsten   +8 more
doaj   +1 more source