Observation of modulational instability in Nd-laser beat-wave experiments

Amiranoff, F.; Laberge, M.; Marquès, J. R.; Moulin, F.; Fabre, E.; Cros, B.; Matthieussent, G.; Benkheiri, P.; Jacquet, Florence; Meyer, J.; Miné, P.; Stenz, C.; Mora, P.

doi:10.1103/physrevlett.68.3710

Cited by 74 publications

(39 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The MP-LWFA approach is closely related to the plasma beat-wave accelerator (PBWA) [1,33], in which two long laser pulses of angular frequencies ω 1 and ω 2 = ω 1 + ω p0 are combined to form a driving pulse modulated at ω p0 . Beat-wave excitation of plasma waves [34][35][36], and their application to accelerating electrons [37,38], have both been demonstrated.…”

mentioning

confidence: 99%

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

et al. 2017

View full text Add to dashboard Cite

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

show abstract

mentioning

confidence: 99%

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The change of the decay rate ͑and the duration͒ of the electron plasma wave when the laser power was varied was observed to be insignificant, even when the number of electrons trapped and accelerated by the electron plasma wave varied from zero to 10 10 . This indicates that there are other damping mechanisms that are important in our experiment in addition to electron beam loading.…”

Section: Discussionmentioning

confidence: 99%

“…[3][4][5] Both have been observed in the damping of the EPW excited by Raman backscattering instability ͑which is a slow-phase-velocity wave͒, [6][7][8] and the latter have been observed in the collinear laser-beat-wave ͑which is a fast-phase-velocity wave͒. 9,10 The damping of a self-modulated laser wakefield was attributed to electron beam loading by Tzeng et al 11 in studies using a particle-in-cell simulation that assumes immobile ions. In this case, the EPW amplitude is not high enough to induce longitudinal ͑one-dimensional͒ wavebreaking.…”

Section: Introductionmentioning

confidence: 99%

Excitation and damping of a self-modulated laser wakefield

et al. 2000

View full text Add to dashboard Cite

, "Excitation and damping of a self-modulated laser wakefield" (2000). Spatially, temporally, and angularly resolved collinear collective Thomson scattering was used to diagnose the excitation and damping of a relativistic-phase-velocity self-modulated laser wakefield. The excitation of the electron plasma wave was observed to be driven by Raman-type instabilities. The damping is believed to originate from both electron beam loading and modulational instability. The collective Thomson scattering of a probe pulse from the ion acoustic waves, resulting from modulational instability, allows us to measure the temporal evolution of the plasma temperature. The latter was found to be consistent with the damping of the electron plasma wave.

show abstract

“…This corresponds to the development of (iii), a driving laser, to realize a practical plasma accelerator. Several beat wave lasers have been developed, such as the CO 2 laser [20][21][22], glass laser [23], and CPA glass laser [24]. They are operated in single-shot mode and are used mainly to reveal the physics of electron laser plasma acceleration.…”

Section: Introductionmentioning

confidence: 99%

Double-line terawatt OPCPA laser system for exciting beat wave oscillations

Mori

Kitagawa

2012

Appl. Phys. B

View full text Add to dashboard Cite

A double-line terawatt beat laser (BEAT) is developed for exciting beat wave oscillations. BEAT consists of two oscillators and an amplification system including optical parametric chirped-pulse amplification (OPCPA) in which two individual pulses with wavelength separations of 10-35 nm are amplified, recompressed, and focused as a single beam. The recompressed pulse trace shows that a 150-fs pulse duration full width at half maximum was modulated at a beating period of 72 fs. This beating period matches a resonant excitation of plasma wave with an electron density of 2.5 9 10 18 cm -3 , resulting in excitation of a beat wave in hydrogen plasma with wave amplitude of 15 GV/m. The multiple beating oscillations can amplify the plasma wave and improve its structure. This scheme would be ideal for stabilizing the plasma wave strength in the plasma cavity and for realizing a practical laser plasma accelerator.

show abstract

Observation of modulational instability in Nd-laser beat-wave experiments

Cited by 74 publications

References 15 publications

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

Excitation and Control of Plasma Wakefields by Multiple Laser Pulses

Excitation and damping of a self-modulated laser wakefield

Double-line terawatt OPCPA laser system for exciting beat wave oscillations

Contact Info

Product

Resources

About