Optical Guiding in Meter-Scale Plasma Waveguides

Miao, Bo; Feder, Linus; Shrock, J. E.; Goffin, A.; Milchberg, H. M.

doi:10.1103/physrevlett.125.074801

Cited by 56 publications

(33 citation statements)

References 36 publications

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“…The calculations showed that when this is satisfied, the propagation losses are approximately 7 mJ cm −1 , from which we deduce that an input pulse energy of 700 mJ is required for the conditioning pulse. Hence, a total laser energy of 1.2 J would be required, which is small compared to the energy required for the driving laser in a meter-scale LWFA, and almost an order of magnitude smaller than CHOFI channels generated by a high-order Bessel conditioning pulse [32].…”

Section: Discussionmentioning

confidence: 99%

“…More recently, Morozov et al [31] explored effects similar to those reported here in their investigation of ionization-assisted guiding in plasma channels formed in 3.5-mm-long gas jets with an initial atomic density of order 1×10 19 cm −3 . An alternative approach in which the neutral gas collar is ionized by a coaxial high-order Bessel beam has also recently been described [32].…”

Section: Introductionmentioning

confidence: 99%

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Meter-scale conditioned hydrodynamic optical-field-ionized plasma channels

et al. 2020

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We demonstrate through experiments and numerical simulations that low-density, low-loss, meter-scale plasma channels can be generated by employing a conditioning laser pulse to ionize the neutral gas collar surrounding a hydrodynamic optical-field-ionized (HOFI) plasma channel. We use particle-in-cell simulations to show that the leading edge of the conditioning pulse ionizes the neutral gas collar to generate a deep, low-loss plasma channel which guides the bulk of the conditioning pulse itself as well as any subsequently injected pulses. In proof-of-principle experiments, we generate conditioned HOFI (CHOFI) waveguides with axial electron densities of n e0 ≈ 1×10 17 cm −3 and a matched spot size of 26 μm. The power attenuation length of these CHOFI channels was calculated to be L att = (21 ± 3) m, more than two orders of magnitude longer than achieved by HOFI channels. Hydrodynamic and particle-in-cell simulations demonstrate that meter-scale CHOFI waveguides with attenuation lengths exceeding 1 m could be generated with a total laser pulse energy of only 1.2 J per meter of channel. The properties of CHOFI channels are ideally suited to many applications in high-intensity light-matter interactions, including multi-GeV plasma accelerator stages operating at high pulse repetition rates.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Meter-scale conditioned hydrodynamic optical-field-ionized plasma channels

et al. 2020

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“…While longitudinal control of the density profile seems the major challenge for improving PW-laser-based acceleration, advances in various guiding methods and technologies will provide additional improvement of the acceleration process. Besides the challenge of producing stable long-distance channels [50], curved channel technology will provide a useful method to control the directionality of electron beams and laser pulses [51]. In addition, recent theoretical and numerical studies proposed to overcome the dephasing length of LWFA, so-called phase-locked [52] or dephasingless [53] LWFA, by adapting the superluminal velocity of focal spot movement [54], which can be a way to maximize electron energy for given laser power.…”

Section: Perspective Of Lwfa With Pw Lasersmentioning

confidence: 99%

Multi-GeV Laser Wakefield Electron Acceleration with PW Lasers

et al. 2021

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Laser wakefield electron acceleration (LWFA) is an emerging technology for the next generation of electron accelerators. As intense laser technology has rapidly developed, LWFA has overcome its limitations and has proven its possibilities to facilitate compact high-energy electron beams. Since high-power lasers reach peak power beyond petawatts (PW), LWFA has a new chance to explore the multi-GeV energy regime. In this article, we review the recent development of multi-GeV electron acceleration with PW lasers and discuss the limitations and perspectives of the LWFA with high-power lasers.

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“…Email: JvanTilborg@lbl.gov laser alignment. For example, transverse position jitter at focus of the order of 10 µm is problematic when shortscale plasma density features are present, when colliding or overlapping with multiple micrometer-sized laser foci [13][14][15][16] , or when guiding intense laser pulses in plasmas [17,18] . Similarly, the pointing angle of the laser axis affects the coupling of the laser-plasma-produced secondary radiation (electron beams, X-rays, etc.)…”

Section: Introductionmentioning

confidence: 99%

High-power non-perturbative laser delivery diagnostics at the final focus of 100-TW-class laser pulses

Isono

Tilborg

Barber

et al. 2021

High Pow Laser Sci Eng

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Controlling the delivery of multi-terawatt and petawatt laser pulses to final focus, both in position and angle, is critical to many laser applications such as optical guiding, laser–plasma acceleration, and laser-produced secondary radiation. We present an online, non-destructive laser diagnostic, capable of measuring the transverse position and pointing angle at focus. The diagnostic is based on a unique double-surface-coated wedged-mirror design for the final steering optic in the laser line, producing a witness beam highly correlated with the main beam. By propagating low-power kilohertz pulses to focus, we observed spectra of focus position and pointing angle fluctuations dominated by frequencies below 70 Hz. The setup was also used to characterize the excellent position and pointing angle correlation of the 1 Hz high-power laser pulses to this low-power kilohertz pulse train, opening a promising path to fast non-perturbative feedback concepts even on few-hertz-class high-power laser systems.

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Optical Guiding in Meter-Scale Plasma Waveguides

Cited by 56 publications

References 36 publications

Meter-scale conditioned hydrodynamic optical-field-ionized plasma channels

Meter-scale conditioned hydrodynamic optical-field-ionized plasma channels

Multi-GeV Laser Wakefield Electron Acceleration with PW Lasers

High-power non-perturbative laser delivery diagnostics at the final focus of 100-TW-class laser pulses

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