Skip to Main content Skip to Navigation
Journal articles

High-power laser delocalization in plasmas leading to long-range beam merging

Abstract : Attraction and fusion between co-propagating light beams, mutually coherent or not, can take place in nonlinear media as a result of the beam power modifying the refractive index of the medium. In the context of high-power light beams, induced modifications of the beam patterns could potentially impact many topics, including long-range laser propagation, the study of astrophysical colliding blast waves and inertial confinement fusion. Here, through experiments and simulations, we show that in a fully ionized plasma, which is a nonlinear medium, beam merging can take place for high-power and mutually incoherent beams that are initially separated by several beam diameters. This is in contrast to the usual assumption that this type of interaction is limited to beams separated by only one beam diameter. This effect, which is orders of magnitude more significant than Kerr-like nonlinearity in gases, demonstrates the importance of potential cross-talk amongst multiple beams in plasma.
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03321060
Contributor : Julien Fuchs Connect in order to contact the contributor
Submitted on : Tuesday, August 17, 2021 - 3:49:36 AM
Last modification on : Friday, December 3, 2021 - 11:42:49 AM
Long-term archiving on: : Thursday, November 18, 2021 - 6:24:09 PM

File

BeamCoupling_revised_final.pdf
Files produced by the author(s)

Identifiers

Citation

M. Nakatsutsumi, J.-R Marquès, P. Antici, N. Bourgeois, J. Feugeas, et al.. High-power laser delocalization in plasmas leading to long-range beam merging. Nature Physics, Nature Publishing Group, 2010, 6 (12), pp.1010-1016. ⟨10.1038/nphys1788⟩. ⟨hal-03321060⟩

Share

Metrics

Record views

72

Files downloads

47