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Wave packet dynamics and control in excited states of molecular nitrogen

Fushitani, Mizuho ; Fujise, Hikaru ; Hishikawa, Akiyoshi ; You, Daehyun ; Saito, Shu ; Luo, Yu ; Ueda, Kiyoshi ; Ibrahim, Heide ; Légaré, Francois and Pratt, Stephen T , et al. (2024) In The Journal of chemical physics 160(10).
Abstract

Wave packet interferometry with vacuum ultraviolet light has been used to probe a complex region of the electronic spectrum of molecular nitrogen, N2. Wave packets of Rydberg and valence states were excited by using double pulses of vacuum ultraviolet (VUV), free-electron-laser (FEL) light. These wave packets were composed of contributions from multiple electronic states with a moderate principal quantum number (n ∼ 4-9) and a range of vibrational and rotational quantum numbers. The phase relationship of the two FEL pulses varied in time, but as demonstrated previously, a shot-by-shot analysis allows the spectra to be sorted according to the phase between the two pulses. The wave packets were probed by angle-resolved photoionization... (More)

Wave packet interferometry with vacuum ultraviolet light has been used to probe a complex region of the electronic spectrum of molecular nitrogen, N2. Wave packets of Rydberg and valence states were excited by using double pulses of vacuum ultraviolet (VUV), free-electron-laser (FEL) light. These wave packets were composed of contributions from multiple electronic states with a moderate principal quantum number (n ∼ 4-9) and a range of vibrational and rotational quantum numbers. The phase relationship of the two FEL pulses varied in time, but as demonstrated previously, a shot-by-shot analysis allows the spectra to be sorted according to the phase between the two pulses. The wave packets were probed by angle-resolved photoionization using an infrared pulse with a variable delay after the pair of excitation pulses. The photoelectron branching fractions and angular distributions display oscillations that depend on both the time delays and the relative phases of the VUV pulses. The combination of frequency, time delay, and phase selection provides significant control over the ionization process and ultimately improves the ability to analyze and assign complex molecular spectra.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of chemical physics
volume
160
issue
10
article number
104203
pages
9 pages
publisher
American Institute of Physics (AIP)
external identifiers
  • pmid:38469909
  • scopus:85187731810
ISSN
0021-9606
DOI
10.1063/5.0188182
language
English
LU publication?
yes
additional info
© 2024 Author(s). Published under an exclusive license by AIP Publishing.
id
3d45f94e-f3f8-4e2a-96b4-3405294d1fbd
date added to LUP
2024-03-18 14:19:06
date last changed
2024-06-12 21:09:10
@article{3d45f94e-f3f8-4e2a-96b4-3405294d1fbd,
  abstract     = {{<p>Wave packet interferometry with vacuum ultraviolet light has been used to probe a complex region of the electronic spectrum of molecular nitrogen, N2. Wave packets of Rydberg and valence states were excited by using double pulses of vacuum ultraviolet (VUV), free-electron-laser (FEL) light. These wave packets were composed of contributions from multiple electronic states with a moderate principal quantum number (n ∼ 4-9) and a range of vibrational and rotational quantum numbers. The phase relationship of the two FEL pulses varied in time, but as demonstrated previously, a shot-by-shot analysis allows the spectra to be sorted according to the phase between the two pulses. The wave packets were probed by angle-resolved photoionization using an infrared pulse with a variable delay after the pair of excitation pulses. The photoelectron branching fractions and angular distributions display oscillations that depend on both the time delays and the relative phases of the VUV pulses. The combination of frequency, time delay, and phase selection provides significant control over the ionization process and ultimately improves the ability to analyze and assign complex molecular spectra.</p>}},
  author       = {{Fushitani, Mizuho and Fujise, Hikaru and Hishikawa, Akiyoshi and You, Daehyun and Saito, Shu and Luo, Yu and Ueda, Kiyoshi and Ibrahim, Heide and Légaré, Francois and Pratt, Stephen T and Eng-Johnsson, Per and Mauritsson, Johan and Olofsson, Anna and Peschel, Jasper and Simpson, Emma R and Carpeggiani, Paolo Antonio and Ertel, Dominik and Maroju, Praveen Kumar and Moioli, Matteo and Sansone, Giuseppe and Shah, Ronak and Csizmadia, Tamás and Dumergue, Mathieu and Nandiga Gopalakrishna, Harshitha and Kühn, Sergei and Callegari, Carlo and Danailov, Miltcho and Demidovich, Alexander and Raimondi, Lorenzo and Zangrando, Marco and De Ninno, Giovanni and Di Fraia, Michele and Giannessi, Luca and Plekan, Oksana and Rebernik Ribic, Primoz and Prince, Kevin C}},
  issn         = {{0021-9606}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{10}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{The Journal of chemical physics}},
  title        = {{Wave packet dynamics and control in excited states of molecular nitrogen}},
  url          = {{http://dx.doi.org/10.1063/5.0188182}},
  doi          = {{10.1063/5.0188182}},
  volume       = {{160}},
  year         = {{2024}},
}