Theory of attosecond delays in laser-assisted photoionization
Dahlström, Marcus LU ; Guenot, Diego LU ; Klünder, Kathrin LU ; Gisselbrecht, Mathieu LU
; Mauritsson, Johan
LU
; L'Huillier, Anne
LU
; Maquet, A.
and Taieb, R.
(2013)
In Chemical Physics
414.
p.53-64
- Abstract
- We study the temporal aspects of laser-assisted extreme ultraviolet (XUV) photoionization using attosecond pulses of harmonic radiation. The aim of this paper is to establish the general form of the phase of the relevant transition amplitudes and to make the connection with the time-delays that have been recently measured in experiments. We find that the overall phase contains two distinct types of contributions: one is expressed in terms of the phase-shifts of the photoelectron continuum wavefunction while the other is linked to continuum-continuum transitions induced by the infrared (IR) laser probe. Our formalism applies to both kinds of measurements reported so far, namely the ones using attosecond pulse trains of XUV harmonics and the... (More)
- We study the temporal aspects of laser-assisted extreme ultraviolet (XUV) photoionization using attosecond pulses of harmonic radiation. The aim of this paper is to establish the general form of the phase of the relevant transition amplitudes and to make the connection with the time-delays that have been recently measured in experiments. We find that the overall phase contains two distinct types of contributions: one is expressed in terms of the phase-shifts of the photoelectron continuum wavefunction while the other is linked to continuum-continuum transitions induced by the infrared (IR) laser probe. Our formalism applies to both kinds of measurements reported so far, namely the ones using attosecond pulse trains of XUV harmonics and the others based on the use of isolated attosecond pulses (streaking). The connection between the phases and the time-delays is established with the help of finite difference approximations to the energy derivatives of the phases. The observed time-delay is a sum of two components: a one-photon Wigner-like delay and a universal delay that originates from the probing process itself. (C) 2012 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3651247
- author
- Dahlström, Marcus
LU
; Guenot, Diego
LU
; Klünder, Kathrin
LU
; Gisselbrecht, Mathieu
LU
; Mauritsson, Johan
LU
; L'Huillier, Anne
LU
; Maquet, A.
and Taieb, R.
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Atomic delay, Atomic phase, pulse characterization, Above-threshold ionization, Phase of ATI, in photoionization, Delay, High-order harmonics, Laser-assisted, Attosecond, Photoionization, Steaking, RABITT, RABBIT, PROOF, Temporal characterization
- in
- Chemical Physics
- volume
- 414
- pages
- 53 - 64
- publisher
- Elsevier
- external identifiers
-
- wos:000315818700008
- scopus:84874936810
- ISSN
- 0301-0104
- DOI
- 10.1016/j.chemphys.2012.01.017
- language
- English
- LU publication?
- yes
- id
- d6c7d6f0-2189-4a21-8c49-a91bcb8b6141 (old id 3651247)
- date added to LUP
- 2016-04-01 14:31:53
- date last changed
- 2022-03-22 00:18:17
@article{d6c7d6f0-2189-4a21-8c49-a91bcb8b6141,
abstract = {{We study the temporal aspects of laser-assisted extreme ultraviolet (XUV) photoionization using attosecond pulses of harmonic radiation. The aim of this paper is to establish the general form of the phase of the relevant transition amplitudes and to make the connection with the time-delays that have been recently measured in experiments. We find that the overall phase contains two distinct types of contributions: one is expressed in terms of the phase-shifts of the photoelectron continuum wavefunction while the other is linked to continuum-continuum transitions induced by the infrared (IR) laser probe. Our formalism applies to both kinds of measurements reported so far, namely the ones using attosecond pulse trains of XUV harmonics and the others based on the use of isolated attosecond pulses (streaking). The connection between the phases and the time-delays is established with the help of finite difference approximations to the energy derivatives of the phases. The observed time-delay is a sum of two components: a one-photon Wigner-like delay and a universal delay that originates from the probing process itself. (C) 2012 Elsevier B.V. All rights reserved.}},
author = {{Dahlström, Marcus and Guenot, Diego and Klünder, Kathrin and Gisselbrecht, Mathieu and Mauritsson, Johan and L'Huillier, Anne and Maquet, A. and Taieb, R.}},
issn = {{0301-0104}},
keywords = {{Atomic delay; Atomic phase; pulse characterization; Above-threshold ionization; Phase of ATI; in photoionization; Delay; High-order harmonics; Laser-assisted; Attosecond; Photoionization; Steaking; RABITT; RABBIT; PROOF; Temporal characterization}},
language = {{eng}},
pages = {{53--64}},
publisher = {{Elsevier}},
series = {{Chemical Physics}},
title = {{Theory of attosecond delays in laser-assisted photoionization}},
url = {{http://dx.doi.org/10.1016/j.chemphys.2012.01.017}},
doi = {{10.1016/j.chemphys.2012.01.017}},
volume = {{414}},
year = {{2013}},
}