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Controlling photoionization using attosecond time-slit interferences

Cheng, Yu Chen LU orcid ; Mikaelsson, Sara LU ; Nandi, Saikat LU ; Rämisch, Lisa LU ; Guo, Chen LU ; Carlström, Stefanos LU ; Harth, Anne LU ; Vogelsang, Jan LU ; Miranda, Miguel LU and Arnold, Cord L. LU , et al. (2020) In Proceedings of the National Academy of Sciences of the United States of America 117(20). p.10727-10732
Abstract

When small quantum systems, atoms or molecules, absorb a high-energy photon, electrons are emitted with a well-defined energy and a highly symmetric angular distribution, ruled by energy quantization and parity conservation. These rules are based on approximations and symmetries which may break down when atoms are exposed to ultrashort and intense optical pulses. This raises the question of their universality for the simplest case of the photoelectric effect. Here we investigate photoionization of helium by a sequence of attosecond pulses in the presence of a weak infrared laser field. We continuously control the energy of the photoelectrons and introduce an asymmetry in their emission direction, at variance with the idealized rules... (More)

When small quantum systems, atoms or molecules, absorb a high-energy photon, electrons are emitted with a well-defined energy and a highly symmetric angular distribution, ruled by energy quantization and parity conservation. These rules are based on approximations and symmetries which may break down when atoms are exposed to ultrashort and intense optical pulses. This raises the question of their universality for the simplest case of the photoelectric effect. Here we investigate photoionization of helium by a sequence of attosecond pulses in the presence of a weak infrared laser field. We continuously control the energy of the photoelectrons and introduce an asymmetry in their emission direction, at variance with the idealized rules mentioned above. This control, made possible by the extreme temporal confinement of the light-matter interaction, opens a road in attosecond science, namely, the manipulation of ultrafast processes with a tailored sequence of attosecond pulses.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Attosecond pulses, Electron momentum spectroscopy, Photoelectric effect, Photoionization
in
Proceedings of the National Academy of Sciences of the United States of America
volume
117
issue
20
pages
6 pages
publisher
National Academy of Sciences
external identifiers
  • pmid:32354996
  • scopus:85084963765
ISSN
0027-8424
DOI
10.1073/pnas.1921138117
language
English
LU publication?
yes
id
f2ca0e20-f022-417b-a402-f132e80a7f37
date added to LUP
2020-06-16 14:28:57
date last changed
2024-10-31 06:41:18
@article{f2ca0e20-f022-417b-a402-f132e80a7f37,
  abstract     = {{<p>When small quantum systems, atoms or molecules, absorb a high-energy photon, electrons are emitted with a well-defined energy and a highly symmetric angular distribution, ruled by energy quantization and parity conservation. These rules are based on approximations and symmetries which may break down when atoms are exposed to ultrashort and intense optical pulses. This raises the question of their universality for the simplest case of the photoelectric effect. Here we investigate photoionization of helium by a sequence of attosecond pulses in the presence of a weak infrared laser field. We continuously control the energy of the photoelectrons and introduce an asymmetry in their emission direction, at variance with the idealized rules mentioned above. This control, made possible by the extreme temporal confinement of the light-matter interaction, opens a road in attosecond science, namely, the manipulation of ultrafast processes with a tailored sequence of attosecond pulses.</p>}},
  author       = {{Cheng, Yu Chen and Mikaelsson, Sara and Nandi, Saikat and Rämisch, Lisa and Guo, Chen and Carlström, Stefanos and Harth, Anne and Vogelsang, Jan and Miranda, Miguel and Arnold, Cord L. and L'Huillier, Anne and Gisselbrecht, Mathieu}},
  issn         = {{0027-8424}},
  keywords     = {{Attosecond pulses; Electron momentum spectroscopy; Photoelectric effect; Photoionization}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{20}},
  pages        = {{10727--10732}},
  publisher    = {{National Academy of Sciences}},
  series       = {{Proceedings of the National Academy of Sciences of the United States of America}},
  title        = {{Controlling photoionization using attosecond time-slit interferences}},
  url          = {{http://dx.doi.org/10.1073/pnas.1921138117}},
  doi          = {{10.1073/pnas.1921138117}},
  volume       = {{117}},
  year         = {{2020}},
}