Electronic parametric instabilities of an ultrarelativistic laser pulse in a plasma

Gleixner, Ferdinand; Kumar, Naveen

doi:10.1103/physreve.101.033201

Cited by 10 publications

(1 citation statement)

References 35 publications

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“…The nonlinear propagation of intense electromagnetic (EM) waves in plasmas is typically associated with a wide variety of interesting nonlinear phenomena, such as the generation of wakefields (Roy et al, 2019), parametric instabilities (Quesnel et al, 1997;Barr et al, 1999;Gleixner and Kumar, 2020), harmonic generation (Mori et al, 1993;Shen et al, 1995), self-focusing of wave envelopes (Esarey et al, 1997), generation of intense electric and magnetic fields (Borghesi et al, 2002b;Wagner et al, 2004), and localization of EM waves as solitons (Farina and Bulanov, 2001;Sundar et al, 2011;Roy et al, 2019). One particular class of waves that caught attention in the context of laser-plasma interactions in relativistic regimes is the EM solitons.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic solitons and their stability in relativistic degenerate dense plasmas with two electron species

Roy

Misra

2022

Front. Astron. Space Sci.

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The evolution of electromagnetic (EM) solitons due to nonlinear coupling of circularly polarized intense laser pulses with low-frequency electron-acoustic perturbations is studied in relativistic degenerate dense astrophysical plasmas with two groups of electrons: a sparse population of classical relativistic electrons and a dense population of relativistic degenerate electron gas. Different forms of localized stationary solutions are obtained and their properties are analyzed. Using the Vakhitov-Kolokolov stability criterion, the conditions for the existence and stability of a moving EM soliton are also studied. It is noted that the stable and unstable regions shift around the plane of soliton eigenfrequency and the soliton velocity due to the effects of relativistic degeneracy, the fraction of classical to degenerate electrons and the EM wave frequency. Furthermore, while the standing solitons exhibit stable profiles for a longer time, the moving solitons, however, can be stable or unstable depending on the degree of electron degeneracy, the soliton eigenfrequency and the soliton velocity. The latter with an enhanced value can eventually lead to a soliton collapse. The results should be useful for understanding the formation of solitons in the coupling of highly intense laser pulses with slow response of degenerate dense plasmas in the next generation laser-plasma interaction experiments as well as the novel features of x-ray and γ-ray pulses that originate from compact astrophysical objects.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic solitons and their stability in relativistic degenerate dense plasmas with two electron species

Roy

Misra

2022

Front. Astron. Space Sci.

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Coupled circularly polarized electromagnetic soliton states in magnetized plasmas

Veldes,

Lazarides,

Frantzeskakis

et al. 2024

Nonlinear Dyn

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The interaction between two co-propagating electromagnetic pulses in a magnetized plasma is considered, from first principles, relying on a fluid-Maxwell model. Two circularly polarized wavepackets by same group velocities are considered, characterized by opposite circular polarization, to be identified as left-hand- or right hand circularly polarized (i.e. LCP or RCP, respectively). A multiscale perturbative technique is adopted, leading to a pair of coupled nonlinear Schrödinger-type (NLS) equations for the modulated amplitudes of the respective vector potentials associated with the two pulses. Systematic analysis reveals the existence, in certain frequency bands, of three different types of vector soliton modes: an LCP-bright/RCP-bright coupled soliton pair state, an LCP-bright/RCP-dark soliton pair, and an LCP-dark/RCP-bright soliton pair. The value of the magnetic field plays a critical role since it determines the type of vector solitons that may occur in certain frequency bands and, on the other hand, it affects the width of those frequency bands that are characterized by a specific type of vector soliton (type). The magnetic field (strength) thus arises as an order parameter, affecting the existence conditions of each type of solution (in the form of an envelope soliton pair). An exhaustive parametric investigation is presented in terms of frequency bands and in a wide range of magnetic field (strength) values, leading to results that may be applicable in beam-plasma interaction scenarios as well as in space plasmas and in the ionosphere.

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Multi wave, kink, breather, interaction solutions and modulation instability to a conformable third order nonlinear Schrödinger equation

Yaşar

2023

Opt Quant Electron

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Electronic parametric instabilities of an ultrarelativistic laser pulse in a plasma

Cited by 10 publications

References 35 publications

Electromagnetic solitons and their stability in relativistic degenerate dense plasmas with two electron species

Electromagnetic solitons and their stability in relativistic degenerate dense plasmas with two electron species

Coupled circularly polarized electromagnetic soliton states in magnetized plasmas

Multi wave, kink, breather, interaction solutions and modulation instability to a conformable third order nonlinear Schrödinger equation

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