Bandwidth effects in stimulated Brillouin scattering driven by partially incoherent light

Brandao B.; Santos J. E.; Trines R. M. G. M.Bingham R.Silva L. O.

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Bandwidth effects in stimulated Brillouin scattering driven by partially incoherent light

机译：Bandwidth effects in stimulated Brillouin scattering driven by partially incoherent light

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摘要

A generalized Wigner-Moyal statistical theory of radiation is used to obtain a general dispersion relation for stimulated Brillouin Scattering (SBS) driven by a broadband radiation field with arbitrary statistics. The monochromatic limit is recovered from our general result, reproducing the classic monochromatic dispersion relation. The behavior of the growth rate of the instability as a simultaneous function of the bandwidth of the pump wave, the intensity of the incident field and the wave number of the scattered wave is further explored by numerically solving the dispersion relation. Our results show that the growth rate of SBS can be reduced by 1/3 for a bandwidth of 0.3 nm, for typical experimental parameters.

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《Plasma physics and controlled fusion》 |2021年第9期|共13页
作者
Brandao B.; Santos J. E.; Trines R. M. G. M.Bingham R.Silva L. O.;
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作者单位

Univ Lisbon;

Univ Cambridge;

Cent Laser Facil;

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正文语种英语
中图分类等离子体物理学;
关键词
laser-plasma interactions; parametric instabilities; stimulated Brillouin scattering; photon kinetics; WIGNER DISTRIBUTION FUNCTION; INDUCED SPATIAL INCOHERENCE; PARAMETRIC-INSTABILITIES; RAMAN-SCATTERING; LASER-PULSES; PLASMA; FUSION; FILAMENTATION; EXCITATION; REDUCTION;

Bandwidth effects in stimulated Brillouin scattering driven by partially incoherent light

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