Oxford Centre for High Energy Density Science (OxCHEDS)

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Combined visible and near-infrared OPA for wavelength scaling experiments in strong-field physics

(2017)

Authors:

David T Lloyd, Kevin O'Keeffe, Adam S Wyatt, Patrick N Anderson, Daniel Treacher, Simon M Hooker
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Measurements of plasma spectra from hot dense elements and mixtures at conditions relevant to the solar radiative zone.

ATOMIC PROCESSES IN PLASMAS (APIP 2016) 1811 (2017)

Authors:

DJ Hoarty, E Hill, P Beiersdorfer, P Allan, CRD Brown, MP Hill, LMR Hobbs, SF James, J Morton, N Sircombe, L Upcraft, JWO Harris, R Shepherd, E Marley, E Magee, J Emig, J Nilsen, SJ Rose
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Combined visible and near-infrared OPA for wavelength scaling experiments in strong-field physics

Proceedings of SPIE SPIE 10088:Nonlinear Frequency Generation and Conversion: Materials and Devices XVI (2017)

Authors:

David Lloyd, K O'Keeffe, A Wyatt, Patrick Anderson, Daniel Treacher, Simon Hooker

Abstract:

We report the operation of an optical parametric amplifier (OPA) capable of producing gigawatt peak-power laser pulses with tunable wavelength in either the visible or near-infrared spectrum. The OPA has two distinct operation modes (i) generation of > 350 μJ, sub 100 fs pulses, tunable between 1250 - 1550 nm; (ii) generation of > 170 μJ, sub 150 fs pulses tunable between 490 - 530 nm. We have recorded high-order harmonic spectra over a wide range of driving wavelengths. This flexible source of femtosecond pulses presents a useful tool for exploring the wavelength-dependence of strong-field phenomena, in both the multi-photon and tunnel ionization regimes.
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Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma

(2017)

Authors:

P Tzeferacos, A Rigby, A Bott, AR Bell, R Bingham, A Casner, F Cattaneo, EM Churazov, J Emig, F Fiuza, CB Forest, J Foster, C Graziani, J Katz, M Koenig, C-K Li, J Meinecke, R Petrasso, H-S Park, BA Remington, JS Ross, D Ryu, D Ryutov, TG White, B Reville, F Miniati, AA Schekochihin, DQ Lamb, DH Froula, G Gregori
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Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo

(2017)

Authors:

P Tzeferacos, A Rigby, A Bott, AR Bell, R Bingham, A Casner, F Cattaneo, EM Churazov, J Emig, N Flocke, F Fiuza, CB Forest, J Foster, C Graziani, J Katz, M Koenig, C-K Li, J Meinecke, R Petrasso, H-S Park, BA Remington, JS Ross, D Ryu, D Ryutov, K Weide, TG White, B Reville, F Miniati, AA Schekochihin, DH Froula, G Gregori, DQ Lamb
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