Characterization of focal field formed by a large numerical aperture paraboloidal mirror and generation of ultra-high intensity (1022 W/cm2)

Bahk, S.-W.; Rousseau, P.; Planchon, Thomas A.; Chvykov, V.; Kalintchenko, G.; Maksimchuk, A.; Mourou, G.; Yanovsky, V.

doi:10.1007/s00340-005-1803-8

Cited by 65 publications

(26 citation statements)

References 15 publications

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“…>0.5 GeV, ten times higher than the highest published energy to date for laser-accelerated carbons with TNSA. This is achieved with a laser power of ∼150 TW at an intensity of ∼2 × 10 20 W cm −2 , well below the peak of current technology at 1.1 PW [28] and 2 × 10 22 W cm −2 [29], respectively. The peak particle energy achieved is already suitable for many applications, including IFI [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Laser-driven ion acceleration from relativistically transparent nanotargets

et al. 2013

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Here we present experimental results on laser-driven ion acceleration from relativistically transparent, overdense plasmas in the break-out afterburner (BOA) regime. Experiments were preformed at the Trident ultra-high contrast laser facility at Los Alamos National Laboratory, and at the Texas Petawatt laser facility, located in the University of Texas at Austin. It is shown that when the target becomes relativistically transparent to the laser, an epoch of dramatic acceleration of ions occurs that lasts until the electron density in the expanding target reduces to the critical density in the non-relativistic limit. For given laser parameters, the optimal target thickness yielding the highest maximum ion energy is one in which this time window for ion acceleration overlaps with the intensity peak of the laser pulse. A simple analytic model of relativistically induced transparency is presented for plasma expansion at the

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Section: Introductionmentioning

confidence: 99%

Laser-driven ion acceleration from relativistically transparent nanotargets

et al. 2013

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“…A particularly useful approximation employed to describe on-axis phenomena within the central Rayleigh range of the Gaussian beam, is the so-called "paraxial approximation". With the advent of new experimental techniques and the quest for ever higher intensities, focusing of intense laser beams is becoming increasingly important [7,17]. Higher focusing naturally increases the diffraction angle and brings into question the validity of the paraxial approximation [13,18,19], especially at sub-wavelength beam waist [15].…”

Section: Introductionmentioning

confidence: 99%

On beam models and their paraxial approximation

Waters

King

2017

Laser Phys.

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We derive focused laser pulse solutions to the electromagnetic wave equation in vacuum. After reproducing beam and pulse expressions for the well-known paraxial Gaussian and axicon cases, we apply the method to analyse a laser beam with Lorentzian transverse momentum distribution. Whilst a paraxial approach has some success close to the focal axis and within a Rayleigh range of the focal spot, we find that it incorrectly predicts the transverse fall-off typical of a Lorentzian. Our vector-potential approach is particularly relevant to calculation of quantum electrodynamical processes in weak laser pulse backgrounds.

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“…The focused intensity can reach 10 22 W/cm 2 [60]. To keep the laser matter interaction in the femtosecond regime, the pulse has to exhibit a high temporal contrast.…”

Section: Temporal Contrast Of Intense Pulsementioning

confidence: 99%