Quantum mechanical approach to probing the birth of attosecond pulses using a two-colour field
(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:
https://lup.lub.lu.se/record/1964918
- author
- Dahlström, Marcus LU ; L'Huillier, Anne LU and Mauritsson, Johan LU
- organization
- publishing date
- 2011
- 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
- 2016-04-01 13:08:27
- date last changed
- 2022-04-06 02:50:30
@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 = {{https://lup.lub.lu.se/search/files/3182524/1985743.pdf}}, doi = {{10.1088/0953-4075/44/9/095602}}, volume = {{44}}, year = {{2011}}, }