Strong plasma wave excitation by a ‘‘chirped’’ laser beat wave

Deutsch, Moshe; Meerson, Baruch; Golub, J. E.

doi:10.1063/1.859992

Cited by 49 publications

(46 citation statements)

References 18 publications

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“…It was extensively studied in the context of relativistic particle acceleration: in the 40-ies by McMillan [5], Veksler [6] and Bohm and Foldy [7,8], and more recently [9][10][11][12]. Additional applications include a quasiclassical scheme of excitation of atoms [13] and molecules [14], excitation of nonlinear waves [15,16], solitons [17,18], vortices [19,20] and other collective modes [21] in fluids and plasmas, an autoresonant mechanism of transition to chaos in Hamiltonian systems [22,23], etc.…”

Section: Introductionmentioning

confidence: 99%

Parametric autoresonance

Khain

Meerson

2001

Phys. Rev. E

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We investigate parametric autoresonance: a persisting phase locking which occurs when the driving frequency of a parametrically excited nonlinear oscillator slowly varies with time. In this regime, the resonant excitation is continuous and unarrested by the oscillator nonlinearity. The system has three characteristic time scales, the fastest one corresponding to the natural frequency of the oscillator. We perform averaging over the fastest time scale and analyze the reduced set of equations analytically and numerically. Analytical results are obtained by exploiting the scale separation between the two remaining time scales which enables one to use the adiabatic invariant of the perturbed nonlinear motion.

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Section: Introductionmentioning

confidence: 99%

Parametric autoresonance

Khain

Meerson

2001

Phys. Rev. E

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“…The MP-LWFA concept has been investigated theoretically [40][41][42][43][44][45][46][47][48] but has not previously been demonstrated experimentally. The idea of using a long pulse with temporally non-uniform modulation to overcome the Rosenbluth-Liu limit was proposed, within the context of PBWA, by Deutsch et al [49], who suggested using a pair of frequency-chirped laser pulses.…”

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confidence: 99%

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

et al. 2017

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We demonstrate experimentally the resonant excitation of plasma waves by trains of laser pulses. We also take an important first step to achieving an energy recovery plasma accelerator by showing that unused wakefield energy can be removed by an out-of-resonance trailing laser pulse. The measured laser wakefields are found to be in excellent agreement with analytical and numerical models of wakefield excitation in the linear regime. Our results indicate a promising direction for achieving highly controlled, GeV-scale laser-plasma accelerators operating at multi-kilohertz repetition rates. This article was published in Physical Review Letters 119, 044802 on 27 July 2017. DOI: 10.1103/PhysRevLett.119.044802 Copyright 2017 American Physical Society

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“…Rosenbluth and Liu [5] demonstrated that this dependency results in the relativistic saturation of the plasma wave amplitude. A number of authors have proposed ways of circumventing the Rosenbluth-Liu limit by detuning [6,7] or chirping [8] the beatwave frequency of long drivers.…”

Section: Introductionmentioning

confidence: 99%

Relativistic Bi-Stability in a Plasma Beatwave Accelerator

Shvets¹

2004

AIP Conference Proceedings

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Abstract. Beatwave excitation of plasma waves is analyzed in the regime where relativistic corrections to the plasma frequency are important. It is shown that a long beatwave pulse can excite strong plasma waves in its wake even when the beatwave frequency is detuned from the electron plasma frequency. The wake is caused by the dynamic bi-stability of the nonlinear plasma wave if the beatwave amplitude exceeds the analytically calculated threshold. Two possible beatwave drivers are considered: intensity-modulated laser pulse and density-modulated electron beam. It is found that, due to the relativistic bi-stability, so portions of the driver may experience photon blue-shifting (for the laser driver) or electron acceleration (for the beam driver). In the latter case a combined accelerator/injector is envisioned.

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Strong plasma wave excitation by a ‘‘chirped’’ laser beat wave

Cited by 49 publications

References 18 publications

Parametric autoresonance

Parametric autoresonance

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

Relativistic Bi-Stability in a Plasma Beatwave Accelerator

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