Demonstration of a plasma mirror based on a laminar flow water film

Panasenko, Dmitriy; Shu, Anthony; Gonsalves, A. J.; Nakamura, Kei; Matlis, Nicholas H.; Tóth, Csaba; Leemans, Wim

doi:10.1063/1.3460627

Cited by 26 publications

(28 citation statements)

References 16 publications

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“…These numbers are experimentally reasonable. Panasenko et al 37 report reflectivities of %70% from short-pulse laser interactions with a water film target at 10 16 W cm À2 , and the trend in their Fig. 3 suggests that the reflectivity would peak above 70% at some intensity above 10 16 W cm À2 .…”

Section: Fig 4 Left Panelmentioning

confidence: 99%

Backward-propagating MeV electrons in ultra-intense laser interactions: Standing wave acceleration and coupling to the reflected laser pulse

et al. 2015

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Laser-accelerated electron beams have been created at a kHz repetition rate from the reflection of intense (∼ 10 18 W/cm 2 ), ∼40 fs laser pulses focused on a continuous water-jet in an experiment at the Air Force Research Laboratory. This paper investigates Particle-in-Cell (PIC) simulations of the laser-target interaction to identify the physical mechanisms of electron acceleration in this experiment. We find that the standing-wave pattern created by the overlap of the incident and reflected laser is particularly important because this standing wave can "inject" electrons into the reflected laser pulse where the electrons are further accelerated. We identify two regimes of standing wave acceleration: a highly relativistic case (a0 ≥ 1), and a moderately relativistic case (a0 ∼ 0.5) which operates over a larger fraction of the laser period. In previous studies, other groups have investigated the highly relativistic case for its usefulness in launching electrons in the forward direction. We extend this by investigating electron acceleration in the specular (back reflection) direction and over a wide range of intensities (10 17 − 10 19 W cm −2 ).

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Section: Fig 4 Left Panelmentioning

confidence: 99%

Backward-propagating MeV electrons in ultra-intense laser interactions: Standing wave acceleration and coupling to the reflected laser pulse

et al. 2015

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“…p Þ 1=2 / 1=ðn 5=4 Þ. Novel optical techniques, such as the use of plasma mirrors [23], are actively being researched.…”

Section: B Collider Power Requirementsmentioning

confidence: 99%

Beamstrahlung considerations in laser-plasma-accelerator-based linear colliders

Schroeder

Esarey

Leemans

2012

Phys. Rev. ST Accel. Beams

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Beam-beam interaction constraints modify the basic plasma density scalings for a linear collider based on laser-plasma accelerators. In the quantum beamstrahlung regime, it is shown that operating at low plasma density increases beamstrahlung effects, owing to the higher bunch charge and longer bunch length. At high plasma density, the bunch charge is limited by beam loading, and the required power is proportional to the square root of the plasma density. At low plasma density, the bunch charge is limited by beamstrahlung, which, for fixed luminosity, requires operation at higher laser repetition rate and, hence, higher power requirements, or the use of multibunch trains. If round beams are used in a multibunch train format with fixed beam loading, and the collider is constrained by beamstrahlung, then the required collider power is independent of plasma density.

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“…Plasma-based optical elements, being already ionized, have the advantage of higher damage thresholds, allowing their use at higher intensities than solid-state elements. Furthermore, plasma optics can be inexpensively and rapidly replaced, for instance, at the rep-rate of a gas jet or capillary [1,2], or flow rate of a water jet [3].…”

Section: Introductionmentioning

confidence: 99%

Plasma lenses for ultrashort multi-petawatt laser pulses

et al. 2015

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An ideal plasma lens can provide the focusing power of a small f-number, solid-state focusing optic at a fraction of the diameter. An ideal plasma lens, however, relies on a steady-state, linear laser pulse-plasma interaction. Ultrashort multi-petawatt (MPW) pulses possess broad bandwidths and extreme intensities, and, as a result, their interaction with the plasma lens is neither steady state nor linear. Here we examine nonlinear and time-dependent modifications to plasma lens focusing, and show that these result in chromatic and phase aberrations and amplitude distortion. We find that a plasma lens can provide enhanced focusing for 30 fs pulses with peak power up to ~1 PW. The performance degrades through the MPW regime, until finally a focusing penalty is incurred at ~10 PW.

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Demonstration of a plasma mirror based on a laminar flow water film

Cited by 26 publications

References 16 publications

Backward-propagating MeV electrons in ultra-intense laser interactions: Standing wave acceleration and coupling to the reflected laser pulse

Backward-propagating MeV electrons in ultra-intense laser interactions: Standing wave acceleration and coupling to the reflected laser pulse

Beamstrahlung considerations in laser-plasma-accelerator-based linear colliders

Plasma lenses for ultrashort multi-petawatt laser pulses

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