| | |
| | |
Stat |
Members: 3645 Articles: 2'501'711 Articles rated: 2609
19 April 2024 |
|
| | | |
|
Article overview
| |
|
On the interpretation of negative birefringence observed in strong-field optical pump-probe experiments: high-order Kerr and plasma grating effects | G. Karras
; P. Béjot
; J. Houzet
; E. Hertz
; F. Billard
; B. Lavorel
; O. Faucher
; | Date: |
7 Nov 2013 | Abstract: | The analysis of negative birefringence optically induced in major air
components (Loriot et al., [1, 2]) is revisited in light of the recently
reported plasma grating-induced phase-shift effect predicted for strong field
pump-probe experiments (Wahlstrand and Milchberg, [3]). The nonlinear birefrin-
gence induced by a short and intense laser pulse in argon is measured by
femtosecond time-resolved polarimetry. The experiments are performed with
degenerate colors, where the pump and probe beam share the same spectrum, or
with two different colors and non-overlapping spectra. The in- terpretation of
the experimental results is substantiated using a numerical 3D+1 model
accounting for nonlinear propagation effects, cross-beam geometry of the
interacting laser pulses, and detec- tion technique. The model also includes
the ionization rate of argon and high-order Kerr indices introduced by Loriot
et al. enabling to assess the contribution of both terms to the observed
effect. The results show that the ionization-induced phase-shift has a minor
contribution compared to the high-order Kerr effect formerly introduced, the
latter allowing a reasonably good reproduction of the experimental data for the
present conditions. | Source: | arXiv, 1311.1603 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |