Controlling photoionization using attosecond time-slit interferences
(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.
(Less)
- author
- organization
- publishing date
- 2020-05-19
- 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
- 2024-08-07 21:07:48
@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}}, }