Results 71 to 80 of about 261,800 (180)

Tracing spatial confinement in semiconductor quantum dots by high-order harmonic generation

Physical Review Research, 2023
We report here on results of systematic experimental-theoretical investigation of high-order harmonic generation (HHG) in layers of CdSe semiconductor quantum dots of different sizes and a reference bulk CdSe thin film.
H. N. Gopalakrishna, R. Baruah, C. Hünecke, V. Korolev, M. Thümmler, A. Croy, M. Richter, F. Yahyaei, R. Hollinger, V. Shumakova, I. Uschmann, H. Marschner, M. Zürch, C. Reichardt, A. Undisz, J. Dellith, A. Pugžlys, A. Baltuška, C. Spielmann, U. Peschel, S. Gräfe, M. Wächtler, D. Kartashov   +22 more
doaj   +1 more source

Pulse-duration dependence of high-order harmonic generation with coherent superposition state

, 2005
We make a systematic study of high-order harmonic generation (HHG) in a He$^+$-like model ion when the initial states are prepared as a coherent superposition of the ground state and an excited state.
Bingbing Wang, Jie Liu, K. C. Kulander, Panming Fu, Shigang Chen, Taiwang Cheng, Xiaofeng Li   +6 more
core   +1 more source

High-order Harmonic Generation

, 2010
X-rays were observed for the first time by Wilhelm Conrad Rontgen in 1895 (Rontgen, 1895). During the first century since that great event X-rays were benefiting mostly from their spatial resolution capability. However, recently it was possible to take advantage also from their temporal resolution due to novel sources providing ultrashort bursts of ...
openaire   +3 more sources

Single attosecond pulse from terahertz-assisted high-order harmonic generation

, 2011
High-order harmonic generation by few-cycle 800 nm laser pulses in neon gas in the presence of a strong terahertz (THz) field is investigated numerically with propagation effects taken into account.
Balogh, Emeric, Dombi, Peter, Farkas, Gyozo, Fulop, Jozsef A., Hebling, Janos, Kovacs, Katalin, Tosa, Valer, Varju, Katalin   +7 more
core   +1 more source

High-order harmonic generation from diatomic molecules with large internuclear distance: The effect of two-center interference

, 2008
In the present paper, we investigate the high-order harmonic generation (HHG) from diatomic molecules with large internuclear distance using a strong field approximation (SFA) model.
Chen, Y. J., Liu, J.
core   +1 more source

High-order harmonic generation from a thin film crystal perturbed by a quasi-static terahertz field. [PDF]

Nat Commun, 2023
Li S, Tang Y, Ortmann L, Talbert BK, Blaga CI, Lai YH, Wang Z, Cheng Y, Yang F, Landsman AS, Agostini P, DiMauro LF.   +11 more
europepmc   +1 more source

Recombination dynamics of clusters in intense extreme-ultraviolet and near-infrared fields

New Journal of Physics, 2015
We investigate electron-ion recombination processes in clusters exposed to intense extreme-ultraviolet (XUV) or near-infrared (NIR) pulses. Using the technique of reionization of excited atoms from recombination (REAR), recently introduced in Schütte et ...
Bernd Schütte, Tim Oelze, Maria Krikunova, Mathias Arbeiter, Thomas Fennel, Marc J J Vrakking, Arnaud Rouzée   +6 more
doaj   +1 more source

High Order Harmonic Generation using Inhomogeneous Two Colour Field, Polarization Gating and Static Electric Field [PDF]

Physics Access
In this study, high-order harmonic generation was investigated under the combined influence of three enhancement schemes: a plasmonic-enhanced two colour field, modulated polarization gating, and a static electric field.
Onsure D Nyang’au, Kebwaro J Monari, Rurimo G Kihara, Njoroge S Maina   +3 more
doaj   +1 more source

Boosting laboratory photoelectron spectroscopy by megahertz high-order harmonics

New Journal of Physics, 2015
Since the discovery of the photoelectric effect, photoelectron spectroscopy has evolved into the most powerful technique for studying the electronic structure of materials.
Cheng-Tien Chiang, Michael Huth, Andreas Trützschler, Mario Kiel, Frank O Schumann, Jürgen Kirschner, Wolf Widdra   +6 more
doaj   +1 more source

Influence of the laser pulse duration in high-order harmonic generation

APL Photonics
High-order harmonic generation (HHG) in gases has been studied for almost 40 years under many different conditions, varying the laser wavelength, intensity, focusing geometry, target design, gas species, etc.
S. Westerberg, M. Redon, A.-K. Raab, G. Beaufort, M. Arias Velasco, C. Guo, I. Sytcevich, R. Weissenbilder, D. O’Dwyer, P. Smorenburg, C. L. Arnold, A. L’Huillier, A.-L. Viotti   +12 more
doaj   +1 more source