| Issue |
Europhys. Lett.
Volume 66, Number 3, May 2004
|
|
|---|---|---|
| Page(s) | 371 - 377 | |
| Section | Physics of gases, plasmas and electric discharges | |
| DOI | https://doi.org/10.1209/epl/i2003-10225-9 | |
| Published online | 01 April 2004 | |
Laser pulse frequency up-shifts by relativistic ionization fronts
1
GoLP-Instituto Superior Tecnico - Complexo I Av. Rovisco Pais, 1049-001 Lisboa, Portugal
2
Laboratoire d'Optique Appliquée, Ensta-Ecole Polytechnique, CNRS UMR 7639 F-91761 Palaiseau Cedex, France
3
Laboratoire CELIA, CNRS-Université Bordeaux 1, UMR 5107 33405 Talence, France
Received:
3
September
2003
Accepted:
2
March
2004
A multi-terawatt, ultra-short laser pulse was used to create a
large, well-defined relativistic ionization front, and the
collision of a probe laser pulse with it was studied. Due to the
good definition of the ionization front it was also possible to
isolate the probe frequency up-shift due to the collision, unlike
in previous experiments. A good agreement with the theoretical
model for photon acceleration was found. Furthermore, we report
novel measurements of ionization front velocities, based on the
photon acceleration effect, in excess of 
.
PACS: 52.38.-r – Laser-plasma interactions / 52.59.-f – Intense particle beams and radiation sources / 52.70.Kz – Optical (ultraviolet, visible, infrared) measurements
© EDP Sciences, 2004
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