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Multiple-harmonic generation in rare gases at high laser intensity

Li, X. F. ; Lhuillier, A. LU orcid ; Ferray, M. ; Lompré, L. A. and Mainfray, G. (1989) In Physical Review A 39(11). p.5751-5761
Abstract

We present experimental measurements of vacuum ultraviolet light emission processes in a 15-Torr rare-gas medium exposed to a strong 1064-nm laser field. Apart from a small number of lines which correspond to discrete transitions, and a broad continuum emission, we essentially observe the odd harmonics of the laser field, up to very high order. At a 3×1013 W cm-2 laser intensity, the highest-order harmonics observed are the 33rd in Ar, the 29th in Kr, and the 21st in Xe. The harmonic distribution presents three regions: a steep decrease for the first harmonics, a plateau, and a sudden cutoff at high order. We study the variation of the conversion efficiency for some of the harmonics as a function of the incident laser intensity and the... (More)

We present experimental measurements of vacuum ultraviolet light emission processes in a 15-Torr rare-gas medium exposed to a strong 1064-nm laser field. Apart from a small number of lines which correspond to discrete transitions, and a broad continuum emission, we essentially observe the odd harmonics of the laser field, up to very high order. At a 3×1013 W cm-2 laser intensity, the highest-order harmonics observed are the 33rd in Ar, the 29th in Kr, and the 21st in Xe. The harmonic distribution presents three regions: a steep decrease for the first harmonics, a plateau, and a sudden cutoff at high order. We study the variation of the conversion efficiency for some of the harmonics as a function of the incident laser intensity and the atomic density. Finally, we analyze the harmonic-generation results as thoroughly as possible, in particular, by characterizing the phase-matching conditions in our experiment.

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author
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publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A
volume
39
issue
11
pages
11 pages
publisher
American Physical Society
external identifiers
  • scopus:3943050079
ISSN
1050-2947
DOI
10.1103/PhysRevA.39.5751
language
English
LU publication?
no
id
f61231ae-7117-405e-9db1-d7d183900440
date added to LUP
2019-05-22 16:32:59
date last changed
2021-10-10 04:57:08
@article{f61231ae-7117-405e-9db1-d7d183900440,
  abstract     = {{<p>We present experimental measurements of vacuum ultraviolet light emission processes in a 15-Torr rare-gas medium exposed to a strong 1064-nm laser field. Apart from a small number of lines which correspond to discrete transitions, and a broad continuum emission, we essentially observe the odd harmonics of the laser field, up to very high order. At a 3×1013 W cm-2 laser intensity, the highest-order harmonics observed are the 33rd in Ar, the 29th in Kr, and the 21st in Xe. The harmonic distribution presents three regions: a steep decrease for the first harmonics, a plateau, and a sudden cutoff at high order. We study the variation of the conversion efficiency for some of the harmonics as a function of the incident laser intensity and the atomic density. Finally, we analyze the harmonic-generation results as thoroughly as possible, in particular, by characterizing the phase-matching conditions in our experiment.</p>}},
  author       = {{Li, X. F. and Lhuillier, A. and Ferray, M. and Lompré, L. A. and Mainfray, G.}},
  issn         = {{1050-2947}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{11}},
  pages        = {{5751--5761}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review A}},
  title        = {{Multiple-harmonic generation in rare gases at high laser intensity}},
  url          = {{http://dx.doi.org/10.1103/PhysRevA.39.5751}},
  doi          = {{10.1103/PhysRevA.39.5751}},
  volume       = {{39}},
  year         = {{1989}},
}