Advanced

Quantum mechanical approach to probing the birth of attosecond pulses using a two-colour field

Dahlström, Marcus LU ; L'Huillier, Anne LU and Mauritsson, Johan LU (2011) In Journal of Physics B: Atomic, Molecular and Optical Physics 44(9).
Abstract
We investigate the generation of even and odd harmonics using an intense laser and a weak second harmonic field. Our theoretical approach is based on solving the saddle-point equations within the strong field approximation. The phase of the even harmonic oscillation as a function of the delay between the fundamental and second harmonic field is calculated and its variation with energy is found to be in good agreement with recent experimental results. We also find that the relationship between this phase variation and the group delay of the attosecond pulses depends on the intensity and wavelength of the fundamental field as well as the ionization potential of the atom.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics B: Atomic, Molecular and Optical Physics
volume
44
issue
9
publisher
IOP Publishing
external identifiers
  • wos:000289777600017
  • scopus:79955455470
ISSN
0953-4075
DOI
10.1088/0953-4075/44/9/095602
language
English
LU publication?
yes
id
9bebf0d3-2c88-472e-af65-3cb4e0f95fde (old id 1964918)
date added to LUP
2011-05-23 13:04:15
date last changed
2017-10-01 04:03:43
@article{9bebf0d3-2c88-472e-af65-3cb4e0f95fde,
  abstract     = {We investigate the generation of even and odd harmonics using an intense laser and a weak second harmonic field. Our theoretical approach is based on solving the saddle-point equations within the strong field approximation. The phase of the even harmonic oscillation as a function of the delay between the fundamental and second harmonic field is calculated and its variation with energy is found to be in good agreement with recent experimental results. We also find that the relationship between this phase variation and the group delay of the attosecond pulses depends on the intensity and wavelength of the fundamental field as well as the ionization potential of the atom.},
  author       = {Dahlström, Marcus and L'Huillier, Anne and Mauritsson, Johan},
  issn         = {0953-4075},
  language     = {eng},
  number       = {9},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics B: Atomic, Molecular and Optical Physics},
  title        = {Quantum mechanical approach to probing the birth of attosecond pulses using a two-colour field},
  url          = {http://dx.doi.org/10.1088/0953-4075/44/9/095602},
  volume       = {44},
  year         = {2011},
}