The Texas Petawatt Laser

Martinez, M.; Gaul, E.; Ditmire, T.; Douglas, Skyler; Gorski, D.; Henderson, W.; Blakeney, Joel; Hammond, Doug; Gerity, Michael; Caird, J. A.; Erlandson, A.; Iovanovic, Igor; Ebbers, C.A.; Molander, Bill

doi:10.1117/12.638939

Cited by 14 publications

(11 citation statements)

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“…Experiments with ultra-thin targets have been performed before but in a completely different regime both in terms of laser and plasma parameters [41]. Here we describe two experimental campaigns: the first was performed at the Trident ultra-high contrast laser facility at LANL, and the second at the Texas Petawatt (TPW) laser facility [42], located in the University of Texas at Austin. On the TPW experiments we used a double plasma mirror (PM) setup [43] to improve the contrast on-target, a method that we also used on our earlier experiments on Trident [44].…”

Section: Experimental Setup and Resultsmentioning

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: Experimental Setup and Resultsmentioning

confidence: 99%

Laser-driven ion acceleration from relativistically transparent nanotargets

et al. 2013

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“…In a process known as target-normal sheath acceleration (TNSA), light ion contaminants were accelerated from the back of the solid targets [12,16]. These ions impinged on the Cu and were stopped in the front plate [17,25], as shown in the resulting activation signal. The ion energy distribution was measured using magnetic spectrometers (see supplementary note [21] for details) and found to reach 25 MeV for protons [26,27].…”

Section: Pacsmentioning

confidence: 99%

“…We performed our experiment on the Texas Petawatt laser facility at the University of Texas at Austin [17]. The setup is depicted in Fig.…”

Section: Pacsmentioning

confidence: 99%

Ultrashort Pulsed Neutron Source

et al. 2014

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“…It is based on the Chirped Pulse Amplification (CPA) technique [4] and uses a synthetic aperture compression scheme detailed previously [5]. PETAL, such as any other high energy Petawatt project (Omega-EP [6], NIF-ARC [7], PICO2000 [8], VULCAN [9], FIREX [10] or the Texas Petawatt Laser [11], uses a series of spatial filters in its amplifier section to extend, image-relay and clean the laser beam of unwanted spatial frequency modulations. These spatial filters, formed with a pair of lenses, introduce longitudinal chromatism and thus temporal delay.…”

Section: Introductionmentioning

confidence: 99%

“…If this effect can be neglected for nanosecond regime lasers, it becomes a crucial issue for short pulses [12] and has consequently to be corrected. Many solutions, from classical achromats to diffractive optics [11][12][13], exist to compensate this longitudinal chromatism. The PETAL corrector, called CROCO (ChROmatism COrrector), takes benefit of the inverse chromatism of a diffractive optic with respect to a transparent material [14].…”

Section: Introductionmentioning

confidence: 99%

Delay interferometric single shot measurement of a petawatt-class laser longitudinal chromatism corrector

Rouyer¹,

Blanchot²,

Néauport³

et al. 2007

Opt. Express

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In this paper we present a self-referenced interferometric single-shot measurement technique that we use to evaluate the longitudinal chromatism compensation made by a diffractive lens corrector. A diffractive lens with a delay of 1 ps is qualified for a 60 mm beam aperture. This corrector was implemented on the Alisé Nd:glass power chain. We qualify the corrector and the Alisé power chain chromatism, demonstrating the potential of this measuring principle as well as the interest of diffractive lenses to correct longitudinal chromatism of petawatt-class lasers.

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The Texas Petawatt Laser

Cited by 14 publications

References 0 publications

Laser-driven ion acceleration from relativistically transparent nanotargets

Laser-driven ion acceleration from relativistically transparent nanotargets

Ultrashort Pulsed Neutron Source

Delay interferometric single shot measurement of a petawatt-class laser longitudinal chromatism corrector

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