On negative higher-order Kerr effect and filamentation
arXiv:1011.0841 · doi:10.1134/S1054660X11130196
Abstract
As a contribution to the ongoing controversy about the role of higher-order Kerr effect (HOKE) in laser filamentation, we first provide thorough details about the protocol that has been employed to infer the HOKE indices from the experiment. Next, we discuss potential sources of artifact in the experimental measurements of these terms and show that neither the value of the observed birefringence, nor its inversion, nor the intensity at which it is observed, appear to be flawed. Furthermore, we argue that, independently on our values, the principle of including HOKE is straightforward. Due to the different temporal and spectral dynamics, the respective efficiency of defocusing by the plasma and by the HOKE is expected to depend substantially on both incident wavelength and pulse duration. The discussion should therefore focus on defining the conditions where each filamentation regime dominates.
22 pages, 11 figures. Submitted to Laser physics as proceedings of the Laser Physics 2010 conference
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Cited by in corpus (7)
- High-field quantum calculation reveals time-dependent negative Kerr contribution
- Effect of a plasma grating on pump-probe experiments near the ionization threshold in gases
- Effect of two-beam coupling in strong-field optical pump-probe experiments
- Higher-order Kerr improve quantitative modeling of laser filamentation
- Triggering filamentation using turbulence
- Characterization of nonequilibrium states of trapped Bose-Einstein condensates
- On the interpretation of negative birefringence observed in strong-field optical pump-probe experiments: high-order Kerr and plasma grating effects