Interaction of two neighboring laser beams taking into account the effects of plasma hydrodynamics

S. Hüller; Ph Mounaix; V. T. Tikhonchuk; D. Pesme

doi:10.1063/1.872352

Interaction of two neighboring laser beams taking into account the effects of plasma hydrodynamics

S. Hüller, Ph Mounaix, V. T. Tikhonchuk, D. Pesme

Research output: Contribution to journal › Article › peer-review

Abstract

The interaction between two neighboring laser beams focused in a hot underdense homogeneous plasma is investigated using the non-paraxial wave coupling code KOLIBRI [S. Hüller et al., Phys. Scr. T63, 151 (1996)] in two and three spatial dimensions. Both the plasma hydrodynamic evolution and the stimulated Brillouin scattering (SBS) aspects are studied in the case of strongly damped ion sound waves. The hydrodynamic effects consist in ponderomotively driven density perturbations located between the beams which may, in turn, influence strongly the light propagation through the plasma. The two beams are found to merge whenever the distance between them is smaller than or of the order of their diameter. Concerning the SBS aspect, it is found that due to interference effects between the beams, the spatial amplification of the backscattered light is asymmetric with respect to the laser axis. SBS can also enforce the hydrodynamic effects and the beam merging.

Original language	English
Pages (from-to)	2670-2680
Number of pages	11
Journal	Physics of Plasmas
Volume	4
Issue number	7
DOIs	https://doi.org/10.1063/1.872352
Publication status	Published - 1 Jan 1997

Access to Document

10.1063/1.872352

Cite this

@article{99d1536844eb4dd8a1e8461b9a831df0,

title = "Interaction of two neighboring laser beams taking into account the effects of plasma hydrodynamics",

abstract = "The interaction between two neighboring laser beams focused in a hot underdense homogeneous plasma is investigated using the non-paraxial wave coupling code KOLIBRI [S. H{\"u}ller et al., Phys. Scr. T63, 151 (1996)] in two and three spatial dimensions. Both the plasma hydrodynamic evolution and the stimulated Brillouin scattering (SBS) aspects are studied in the case of strongly damped ion sound waves. The hydrodynamic effects consist in ponderomotively driven density perturbations located between the beams which may, in turn, influence strongly the light propagation through the plasma. The two beams are found to merge whenever the distance between them is smaller than or of the order of their diameter. Concerning the SBS aspect, it is found that due to interference effects between the beams, the spatial amplification of the backscattered light is asymmetric with respect to the laser axis. SBS can also enforce the hydrodynamic effects and the beam merging.",

author = "S. H{\"u}ller and Ph Mounaix and Tikhonchuk, \{V. T.\} and D. Pesme",

year = "1997",

month = jan,

day = "1",

doi = "10.1063/1.872352",

language = "English",

volume = "4",

pages = "2670--2680",

journal = "Physics of Plasmas",

issn = "1070-664X",

number = "7",

}

TY - JOUR

T1 - Interaction of two neighboring laser beams taking into account the effects of plasma hydrodynamics

AU - Hüller, S.

AU - Mounaix, Ph

AU - Tikhonchuk, V. T.

AU - Pesme, D.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The interaction between two neighboring laser beams focused in a hot underdense homogeneous plasma is investigated using the non-paraxial wave coupling code KOLIBRI [S. Hüller et al., Phys. Scr. T63, 151 (1996)] in two and three spatial dimensions. Both the plasma hydrodynamic evolution and the stimulated Brillouin scattering (SBS) aspects are studied in the case of strongly damped ion sound waves. The hydrodynamic effects consist in ponderomotively driven density perturbations located between the beams which may, in turn, influence strongly the light propagation through the plasma. The two beams are found to merge whenever the distance between them is smaller than or of the order of their diameter. Concerning the SBS aspect, it is found that due to interference effects between the beams, the spatial amplification of the backscattered light is asymmetric with respect to the laser axis. SBS can also enforce the hydrodynamic effects and the beam merging.

AB - The interaction between two neighboring laser beams focused in a hot underdense homogeneous plasma is investigated using the non-paraxial wave coupling code KOLIBRI [S. Hüller et al., Phys. Scr. T63, 151 (1996)] in two and three spatial dimensions. Both the plasma hydrodynamic evolution and the stimulated Brillouin scattering (SBS) aspects are studied in the case of strongly damped ion sound waves. The hydrodynamic effects consist in ponderomotively driven density perturbations located between the beams which may, in turn, influence strongly the light propagation through the plasma. The two beams are found to merge whenever the distance between them is smaller than or of the order of their diameter. Concerning the SBS aspect, it is found that due to interference effects between the beams, the spatial amplification of the backscattered light is asymmetric with respect to the laser axis. SBS can also enforce the hydrodynamic effects and the beam merging.

U2 - 10.1063/1.872352

DO - 10.1063/1.872352

M3 - Article

AN - SCOPUS:0031189175

SN - 1070-664X

VL - 4

SP - 2670

EP - 2680

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 7

ER -

Interaction of two neighboring laser beams taking into account the effects of plasma hydrodynamics

Abstract

Access to Document

Fingerprint

Cite this