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Polarization of high-order harmonics

Antoine, P; Carre, B; L'Huillier, Anne LU and Lewenstein, M (1997) In Physical Review A (Atomic, Molecular and Optical Physics) 55(2). p.1314-1324
Abstract
We report measurements and calculations of the polarization state of high-order harmonics generated by a 790-nm Ti:sapphire laser. The problem of completely characterizing the polarization state of a partially polarized radiation in the XUV range is discussed in detail. The comparison between several gases, xenon, argon and neon, and different orders, from the 17th to the 33rd, shows that the rotation angle and ellipticity strongly depends on the position of the harmonic in the spectrum, and in particular, whether it is in the cutoff or in the plateau. In the plateau, the rotation angle is quite large, and the ellipticity follows that of the fundamental, remaining, however, smaller. The radiation is only partially polarized. In contrast,... (More)
We report measurements and calculations of the polarization state of high-order harmonics generated by a 790-nm Ti:sapphire laser. The problem of completely characterizing the polarization state of a partially polarized radiation in the XUV range is discussed in detail. The comparison between several gases, xenon, argon and neon, and different orders, from the 17th to the 33rd, shows that the rotation angle and ellipticity strongly depends on the position of the harmonic in the spectrum, and in particular, whether it is in the cutoff or in the plateau. In the plateau, the rotation angle is quite large, and the ellipticity follows that of the fundamental, remaining, however, smaller. The radiation is only partially polarized. In contrast, in the cutoff, both rotation angle and ellipticity remain small, independently of the laser ellipticity. Our experimental results compare well with theoretical predictions including the single-atom response and propagation effects. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A (Atomic, Molecular and Optical Physics)
volume
55
issue
2
pages
1314 - 1324
publisher
American Physical Society (APS)
external identifiers
  • scopus:16944365949
ISSN
1050-2947
DOI
10.1103/PhysRevA.55.1314
language
English
LU publication?
yes
id
da6dd19f-d8e8-4d6e-b3d0-d755b7fd2620 (old id 2257341)
date added to LUP
2012-02-23 23:55:11
date last changed
2017-10-22 04:53:22
@article{da6dd19f-d8e8-4d6e-b3d0-d755b7fd2620,
  abstract     = {We report measurements and calculations of the polarization state of high-order harmonics generated by a 790-nm Ti:sapphire laser. The problem of completely characterizing the polarization state of a partially polarized radiation in the XUV range is discussed in detail. The comparison between several gases, xenon, argon and neon, and different orders, from the 17th to the 33rd, shows that the rotation angle and ellipticity strongly depends on the position of the harmonic in the spectrum, and in particular, whether it is in the cutoff or in the plateau. In the plateau, the rotation angle is quite large, and the ellipticity follows that of the fundamental, remaining, however, smaller. The radiation is only partially polarized. In contrast, in the cutoff, both rotation angle and ellipticity remain small, independently of the laser ellipticity. Our experimental results compare well with theoretical predictions including the single-atom response and propagation effects.},
  author       = {Antoine, P and Carre, B and L'Huillier, Anne and Lewenstein, M},
  issn         = {1050-2947},
  language     = {eng},
  number       = {2},
  pages        = {1314--1324},
  publisher    = {American Physical Society (APS)},
  series       = {Physical Review A (Atomic, Molecular and Optical Physics)},
  title        = {Polarization of high-order harmonics},
  url          = {http://dx.doi.org/10.1103/PhysRevA.55.1314},
  volume       = {55},
  year         = {1997},
}