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

Journal Article:

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. (authors)
Authors:
Nakatsutsumi, M; Marques, J R; Antici, P; Bourgeois, N; Romagnani, L; Audebert, P; Fuchs, J; [1]  Nakatsutsumi, M; Kodama, R; [2]  Antici, P; [3]  Feugeas, J L; Nicolai, P; [4]  Lin, T [5] 
  1. UPMC, CEA, CNRS, LULI, Ecole Polytech, F-91128 Palaiseau (France)
  2. Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871 (Japan)
  3. Univ Roma La Sapienza, Dipartimento SBAI, I-00161 Rome (Italy)
  4. Univ Bordeaux 1, CNRS, CEA, Ctr Lasers Intenses and Applicat, F-33405 Talence (France)
  5. Fox Chase Canc Ctr, Philadelphia, PA 19111 (United States)
Publication Date:
Jul 01, 2010
Product Type:
Journal Article
Resource Relation:
Journal Name: Nature Physics (Print); Journal Volume: 6; Journal Issue: no.12; Other Information: 41 refs.
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPUTERIZED SIMULATION; DYNAMICS; HELIUM; INERTIAL CONFINEMENT; LASERS; PLASMA; PULSES; SOLITONS; THERMONUCLEAR REACTIONS; CONFINEMENT; ELEMENTS; FLUIDS; GASES; MECHANICS; NONMETALS; NUCLEAR REACTIONS; NUCLEOSYNTHESIS; PLASMA CONFINEMENT; QUASI PARTICLES; RARE GASES; SIMULATION; SYNTHESIS
OSTI ID:
21530356
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1745-2473; TRN: FR1102363009874
Availability:
Available from doi: http://dx.doi.org/10.1038/NPHYS1788
Submitting Site:
FRN
Size:
page(s) 1010-1016
Announcement Date:
Mar 17, 2012

Journal Article:

Citation Formats

Nakatsutsumi, M, Marques, J R, Antici, P, Bourgeois, N, Romagnani, L, Audebert, P, Fuchs, J, Nakatsutsumi, M, Kodama, R, Antici, P, Feugeas, J L, Nicolai, P, and Lin, T. High-power laser delocalization in plasmas leading to long-range beam merging. France: N. p., 2010. Web. doi:10.1038/NPHYS1788.
Nakatsutsumi, M, Marques, J R, Antici, P, Bourgeois, N, Romagnani, L, Audebert, P, Fuchs, J, Nakatsutsumi, M, Kodama, R, Antici, P, Feugeas, J L, Nicolai, P, & Lin, T. High-power laser delocalization in plasmas leading to long-range beam merging. France. doi:10.1038/NPHYS1788.
Nakatsutsumi, M, Marques, J R, Antici, P, Bourgeois, N, Romagnani, L, Audebert, P, Fuchs, J, Nakatsutsumi, M, Kodama, R, Antici, P, Feugeas, J L, Nicolai, P, and Lin, T. 2010. "High-power laser delocalization in plasmas leading to long-range beam merging." France. doi:10.1038/NPHYS1788. https://www.osti.gov/servlets/purl/10.1038/NPHYS1788.
@misc{etde_21530356,
title = {High-power laser delocalization in plasmas leading to long-range beam merging}
author = {Nakatsutsumi, M, Marques, J R, Antici, P, Bourgeois, N, Romagnani, L, Audebert, P, Fuchs, J, Nakatsutsumi, M, Kodama, R, Antici, P, Feugeas, J L, Nicolai, P, and Lin, T}
abstractNote = {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. (authors)}
doi = {10.1038/NPHYS1788}
journal = {Nature Physics (Print)}
issue = {no.12}
volume = {6}
place = {France}
year = {2010}
month = {Jul}
}