Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Szczepan Chelkowski"'
Publikováno v:
Frontiers in Physics, Vol 9 (2021)
We theoretically study pulse phase and helicity effects on ultrafast magnetic field generation in intense bichromatic circularly polarized laser fields. Simulations are performed on the aligned molecular ion H2+ from numerical solutions of correspond
Externí odkaz:
https://doaj.org/article/bc51d7787f884e93833bdb274ebd0b7b
Publikováno v:
The journal of physical chemistry. A. 125(32)
Molecular orbital symmetry is shown to be an important factor in determining orders and helicities (polarizations) of high-order harmonic generation (HHG) by intense femtosecond counter-rotating bichromatic circularly polarized laser pulses. Numerica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71a9a466aafe5ca9d0d7073bcf5e0e62
https://pubmed.ncbi.nlm.nih.gov/34351772
https://pubmed.ncbi.nlm.nih.gov/34351772
Publikováno v:
Physical Review A. 101
Using numerical solutions of the time-dependent Schr\"odinger equation we show that in oriented molecules one can control the polarization of molecular high-order harmonic generation (MHOHG) by intense linearly polarized pulses. For oriented triangul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38b7c130639768e436896576af9f6197
https://doi.org/10.1103/physreva.101.023411
https://doi.org/10.1103/physreva.101.023411
Publikováno v:
Physical Review A. 101
We investigate the dynamics of relativistic electrons interacting with intense laser fields in a linear or circular polarization. First, we study the momentum distributions of a single spatially localized wave packet. We find that these distributions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acedd6a5d8a5234f4f1e61558c732097
https://doi.org/10.1103/physreva.101.013401
https://doi.org/10.1103/physreva.101.013401
Autor:
Kai-Li Song, Yan-Rong Tian, Qing-Yun Xu, Hong-Dan Zhang, Huizhong Lu, Szczepan Chelkowski, Jing Guo, Jing Chen, André D. Bandrauk
Publikováno v:
Chemical Physics Letters. 712:34-39
The high-order harmonic generation (HHG) from a one-dimensional (1-D) model of H 2 molecule is investigated in the three-color laser fields by numerically solving time-dependent Schrodinger equation (TDSE) in the Born-Oppenheimer Approximation (BOA)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49458448d0fff833ba0c9791d7a4ead1
https://doi.org/10.1016/j.cplett.2018.09.029
https://doi.org/10.1016/j.cplett.2018.09.029
Publikováno v:
Chemical Physics Letters. 683:639-646
We present molecular photoionization by two-color 2 ω 1 = ω 2 orthogonally polarized ultraviolet laser pulses. Simulations are performed on aligned H 2 + by numerically solving time-dependent Schrodinger equations. Two ionization processes with one
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9866b72be2be6f81fd4f715d733a2a28
https://doi.org/10.1016/j.cplett.2017.02.009
https://doi.org/10.1016/j.cplett.2017.02.009
Autor:
Szczepan Chelkowski, André D. Bandrauk
Publikováno v:
Molecular Physics. 115:1971-1983
In most models and theoretical calculations describing multiphoton or tunnelling ionisation by infrared light, and in most part of the spectroscopy, the dipole approximation is used. This is equivalent to setting the very small photon momentum to zer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::665dd759e402138af533b2859e91e830
https://doi.org/10.1080/00268976.2017.1321155
https://doi.org/10.1080/00268976.2017.1321155
Autor:
André D. Bandrauk, Michael Spanner, A. Yu. Naumov, Marc J. J. Vrakking, David M. Villeneuve, Matthias Kübel, Paul B. Corkum, André Staudte, Z. Dube, Szczepan Chelkowski
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Nature Communications
Nature Communications
The strong coupling between intense laser fields and valence electrons in molecules causes distortions of the potential energy hypersurfaces which determine the motion of the nuclei and influence possible reaction pathways. The coupling strength vari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91338b96793446c16b5f67ce48977e13
http://arxiv.org/abs/1906.08285
http://arxiv.org/abs/1906.08285
Autor:
André D. Bandrauk, Szczepan Chelkowski
Publikováno v:
Physical Review A. 97
In most models and theoretical calculations describing multiphoton ionization by infrared light, the dipole approximation is used. This is equivalent to setting the very small photon momentum to zero. Using numerical solutions of the (nondipole) thre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e135cc20f0b7993cbb7468151d697016
https://doi.org/10.1103/physreva.97.053401
https://doi.org/10.1103/physreva.97.053401
Publikováno v:
Chemical Physics Letters. 638:173-178
We study molecular photoelectron momentum distributions (MPMDs) of aligned H 2 + by intense orthogonally polarized attosecond ultraviolet laser pulses. Photoionization is simulated by numerically solving corresponding three-dimensional time dependent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fead7e99f2b0f2700d662ad81be8341d
https://doi.org/10.1016/j.cplett.2015.08.046
https://doi.org/10.1016/j.cplett.2015.08.046