Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Jens E. Bækhøj"'
Autor:
Frank Jensen, Stephen R. Leone, Jens E. Bækhøj, Ashley P. Fidler, Wei Cao, Erika R. Warrick, Lars Bojer Madsen, Daniel M. Neumark
Publikováno v:
Warrick, E R, Baekhoj, J E, Cao, W, Fidler, A P, Jensen, F, Madsen, L B, Leone, S R & Neumark, D M 2017, ' Attosecond transient absorption spectroscopy of molecular nitrogen: Vibrational coherences in the b' 1 Σ + u statestate + ', Chemical Physics Letters, vol. 683, pp. 408-415 . https://doi.org/10.1016/j.cplett.2017.02.013
Nuclear and electronic dynamics in a wavepacket comprising bound Rydberg and valence electronic states of nitrogen from 12 to 15 eV are investigated using attosecond transient absorption. Vibrational quantum beats with a fundamental period of 50 femt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f5321cb6e2ed443fc35ddb17273a3a8
https://doi.org/10.1016/j.cplett.2017.02.013
https://doi.org/10.1016/j.cplett.2017.02.013
Publikováno v:
Rorstad, J J, Baekhoj, J E & Madsen, L B 2017, ' Analytic modeling of structures in attosecond transient-absorption spectra ', Physical Review A, vol. 96, no. 1, 013430 . https://doi.org/10.1103/PhysRevA.96.013430
Attosecond transient-absorption spectroscopy (ATAS) is an established method for exploring electron dynamics on the subfemtosecond time-scale. ATAS spectra contain certain ubiquitous features, such as oscillating fringes, light-induced structures and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f5472adf03c1632263467c4f11659da
https://doi.org/10.1103/physreva.96.013430
https://doi.org/10.1103/physreva.96.013430
Autor:
Jens E. Bækhøj, Lars Bojer Madsen
Publikováno v:
Bækhøj, J E & Madsen, L B 2016, ' Attosecond transient-absorption spectroscopy on aligned molecules ', Physical Review A, vol. 94, no. 4, 043414 . https://doi.org/10.1103/PhysRevA.94.043414
We discuss the characteristics of the dependence of attosecond transient-absorption spectra on the angle between the molecular alignment axis and the polarization of the pump and probe fields. We show how the dipole couplings and therefore the spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0db6ed09731b9bca03f3bbc9e3818bac
https://doi.org/10.1103/physreva.94.043414
https://doi.org/10.1103/physreva.94.043414
Autor:
Lars Bojer Madsen, Jens E. Bækhøj
Publikováno v:
Bækhøj, J E & Madsen, L B 2015, ' Light-induced structures in attosecond transient-absorption spectroscopy of molecules ', Physical Review A, vol. 92, no. 2, 023407 . https://doi.org/10.1103/PhysRevA.92.023407
The nature of light-induced structures in attosecond transient-absorption spectroscopy of molecular systems is investigated theoretically. It is shown how nuclear dynamics affect these structures. We find that a theoretical three-surface model captur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa67f8c8a0beba88aea1a8c8c3a2e13d
Publikováno v:
Bækhøj, J E, Yue, L & Madsen, L B 2015, ' Nuclear-Motion Effects in Attosecond Transient Absorption Spectroscopy of Molecules ', Québec, Canada, 05/07/2015-10/07/2015, .
Bækhøj, J E, Yue, L & Madsen, L B 2015, ' Nuclear-motion effects in attosecond transient-absorption spectroscopy of molecules ', Physical Review A, vol. 91, no. 4, 043408 . https://doi.org/10.1103/PhysRevA.91.043408
Bækhøj, J E, Yue, L & Madsen, L B 2015, ' Nuclear-motion effects in attosecond transient-absorption spectroscopy of molecules ', Physical Review A, vol. 91, no. 4, 043408 . https://doi.org/10.1103/PhysRevA.91.043408
We investigate the characteristic effects of nuclear motion on attosecond transient-absorption spectra in molecules by calculating the spectrum for different model systems. Two models of the hydrogen molecular ion are considered: one where the intern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f9863740357ed5b7bccad8e55a4223b
Publikováno v:
Bækhøj, J E, Tolstikhin, O I & Madsen, L B 2014, ' ‘Slow’ time discretization: a versatile time propagator for the time-dependent Schrödinger equation ', Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 47, no. 7, 075007 . https://doi.org/10.1088/0953-4075/47/7/075007
We present the slow time discretization (STD) method for solving the time-dependent Schrodinger equation. The method is an extension of the slow variable discretization method for solving the stationary Schrodinger equation (Tolstikhin et al 1996 J.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48fef1543743d6811b74d2a5f0b1ad4d
https://pure.au.dk/portal/da/publications/slow-time-discretization-a-versatile-time-propagator-for-the-timedependent-schroedinger-equation(843311fd-62ed-4787-a438-3e688103c997).html
https://pure.au.dk/portal/da/publications/slow-time-discretization-a-versatile-time-propagator-for-the-timedependent-schroedinger-equation(843311fd-62ed-4787-a438-3e688103c997).html
Autor:
Lars Bojer Madsen, Jens E. Bækhøj
Publikováno v:
Bækhøj, J E & Madsen, L B 2016, ' Two attosecond pulse transient absorption spectroscopy and extraction of the instantaneous AC Stark shift in helium ', Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 49, no. 14, 14LT02 . https://doi.org/10.1088/0953-4075/49/14/14LT02
In two attosecond pulse absorption spectroscopy (TAPAS) the use of two attosecond XUV pulses allows the extraction of atomic and molecular quantum mechanical dipole phases from spectroscopic measurements. TAPAS relies on interference between processe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df36cc1dd2059f4332031ccecce5f7e8
https://doi.org/10.1088/0953-4075/49/14/14lt02
https://doi.org/10.1088/0953-4075/49/14/14lt02
Autor:
Jens E Bækhøj, Lars Bojer Madsen
Publikováno v:
Journal of Physics B: Atomic, Molecular & Optical Physics; 7/28/2016, Vol. 49 Issue 14, p1-1, 1p