Fast focusing of short-pulse lasers by innovative plasma optics toward extreme intensity

Nakatsutsumi, M.; Kon, Akira; Buffechoux, S.; Audebert, P.; Fuchs, Julien; Kodama, R.

doi:10.1364/ol.35.002314

Cited by 73 publications

(41 citation statements)

References 14 publications

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“…Such an optic is attractive not only because of the increase in peak laser intensity achievable but also because it improves pulse intensity contrast in the same way as a PPM. 25 and Nakatsutsumi et al, 26 whereby an F/0.4 FPM was developed and achieved a five-fold reduction in focal spot size compared to the spot formed by a conventional F/2.7 off-axis parabolic (OAP) mirror. The intensity enhancement was indirectly diagnosed by the measurement of the maximum energy of protons accelerated from a thin target foil positioned at the FPM beam focus.…”

Section: à2mentioning

confidence: 99%

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Ellipsoidal plasma mirror focusing of high power laser pulses to ultra-high intensities

Wilson

King²,

Gray³

et al. 2016

Physics of Plasmas

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Section: à2mentioning

confidence: 99%

“…As in the case of the previously trialled FPM, 25,26 an ellipsoidal geometry was chosen to induce the plasma mirror focusing, as depicted in Fig. 1(b).…”

Section: Principles Of Design and Operationmentioning

confidence: 99%

Ellipsoidal plasma mirror focusing of high power laser pulses to ultra-high intensities

Wilson

King²,

Gray³

et al. 2016

Physics of Plasmas

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“…An ellipsoidal geometry was selected for the FPM optic shape (as used in the previous work [22,23]) and is depicted in Figure 1a. The ellipse possesses two foci positions, f 1 and f 2 , located on the major axis, of equal distance from the shape centre, enabling point-to-point (i.e., focus-to-focus) re-imaging.…”

Section: Optic Designmentioning

confidence: 99%

Development of Focusing Plasma Mirrors for Ultraintense Laser-Driven Particle and Radiation Sources

Wilson

King

Gray

et al. 2018

QuBS

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Increasing the peak intensity to which high power laser pulses are focused can open up new regimes of laser-plasma interactions, resulting in the acceleration of ions to higher energies and more efficient generation of energetic photons. Low f-number focusing plasma mirrors, which re-image and demagnify the laser focus, provide an attractive approach to producing higher intensities, without requiring significant changes to the laser system. They are small, enhance the pulse intensity contrast and eliminate the requirement to expose expensive optics directly to target debris. We report on progress made in a programme of work to design, manufacture and optimise ellipsoidal focusing plasma mirrors. Different approaches to manufacturing these innovative optics are described, and the results of characterisation tests are presented. The procedure developed to align the optics is outlined, together with initial results from their use with a petawatt-level laser.

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“…a proposed ZPW focusing modification. Instead of a flat PM, one could use an ellipsoidal plasma mirror (EPM) [44,45] to simultaneously re-direct the laser beam, increase the laser intensity and decrease pointing fluctuations. EPM are characterized by having two foci.…”

Section: Considerations For Ion Beam Generation At Zmentioning

confidence: 99%

Z-petawatt driven ion beam radiography development.

Schollmeier¹,

Geißel²,

Rambo³

et al. 2013

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Laser-driven proton radiography provides electromagnetic field mapping with high spatiotemporal resolution, and has been applied to many laser-driven High Energy Density Physics (HEDP) experiments. Our report addresses key questions about the feasibility of ion radiography at the Z-Accelerator ("Z"), concerning laser configuration, hardware, and radiation background. Charged particle tracking revealed that radiography at Z requires GeV scale protons, which is out of reach for existing and near-future laser systems. However, it might be possible to perform proton deflectometry to detect magnetic flux compression in the fringe field region of a magnetized liner inertial fusion experiment. Experiments with the Z-Petawatt laser to enhance proton yield and energy showed an unexpected scaling with target thickness. Full-scale, 3D radiation-hydrodynamics simulations, coupled to fully explicit and kinetic 2D particle-in-cell simulations running for over 10 ps, explain the scaling by a complex interplay of laser prepulse, preplasma, and ps-scale temporal rising edge of the laser.4

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Fast focusing of short-pulse lasers by innovative plasma optics toward extreme intensity

Cited by 73 publications

References 14 publications

Ellipsoidal plasma mirror focusing of high power laser pulses to ultra-high intensities

Ellipsoidal plasma mirror focusing of high power laser pulses to ultra-high intensities

Development of Focusing Plasma Mirrors for Ultraintense Laser-Driven Particle and Radiation Sources

Z-petawatt driven ion beam radiography development.

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