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First HED experiment at XFEL

Professor Justin Wark

Professor of Physics

Sub department

  • Atomic and Laser Physics

Research groups

  • Oxford Centre for High Energy Density Science (OxCHEDS)
Justin.Wark@physics.ox.ac.uk
Telephone: 01865 (2)72251
Clarendon Laboratory, room 029.9
  • About
  • Publications

Characterisation of a saturated single frequency Ne-like Ge XUV laser on the J=0->1 transition at 19.6 nm

INST PHYS CONF SER (1996) 56-58

Authors:

J Zhang, PJ Warwick, E Wolfrum, MH Key, C Danson, A Demir, S Healy, D Kalantar, NS Kim, CLS Lewis, J Lin, A MacPhee, D Neely, J Nilsen, GJ Pert, R Smith, GJ Tallents, JS Wark

Abstract:

We report on measurements of a saturated single frequency Ne-like Ge XUV laser on the J = 0->1 transition at 19.6 nm from a refraction compensating double target driven by 150 J of energy from 75 ps Nd-laser pulses. The 19.6 nm line completely dominated the laser output. The output energy was measured to be 0.9 mJ, corresponding to a conversion efficiency of 6x10(-6).
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Coherence and bandwidth measurements of harmonics generated from solid surfaces irradiated by intense picosecond laser pulses

PHYSICAL REVIEW A 54:2 (1996) 1597-1603

Authors:

J Zhang, M Zepf, PA Norreys, AE Dangor, M Bakarezos, CN Danson, A Dyson, AP Fews, P Gibbon, MH Key, P Lee, P Loukakos, S Moustaizis, D Neely, FN Walsh, JS Wark
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Development and application of ultra-bright laser and harmonic XUV sources

INST PHYS CONF SER (1996) 9-16

Authors:

MH Key, TW Barbee, JW Blyth, K Burnett, GF Cairns, AE Dangor, T Ditmire, A Djaoui, LB DaSilva, A Demir, A Dyson, AP Fews, EE Fill, P Gibbon, P Lee, S Healy, M Holden, DH Kalantar, NS Kim, CLS Lewis, Y Li, J Lin, P Loukakos, AG McPhee, I Mercer, S Moustaizis, M Nakai, D Neely, P Norreys, AA Offenberger, GJ Pert, SG Preston, BA Remmington, A Sanpera, D Schlogl, CG Smith, R Smith, J Steingruber, GJ Tallents, F Walsh, JS Wark, J Warwick, E Wolfrum, M Zepf, J Zhang

Abstract:

Experimental work with high intensity lasers at the Rutherford Appleton Laboratory has led to the production of both XUV laser and XUV harmonic sources with extreme brightness. In particular an efficient XUV laser source has been developed based on collisionally excited neon -like Ge XXIII(J=0-1) at 19.6 nm using the high power glass laser Vulcan generating 75 ps pulses. With Vulcan operating in sub -ps CPA mode, extremely powerful and short wavelength XUV high harmonic sources have been obtained by irradiation of solid targets and recombinant laser action with high gain has been demonstrated with fibre targets. An ultra-bright Krypton-fluoride laser system, Sprite(recently upgraded to a new configuration Titania) has produced the shortest harmonic wavelength (6.7 nm) and has been used to assess the possibilities of optical field ionised recombinant laser action with gas jet targets. The Ge XUV laser has been successfully applied in fusion research for radiographic measurements of the effect of laser speckle on the hydrodynamic stability of laser accelerated thin foils. The present status of the work, the comparative performance of the XUV laser and harmonic sources and near-term future directions are reviewed.
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Development of XUV lasers at the RAL central laser facility

OPTICAL AND QUANTUM ELECTRONICS 28:3 (1996) 201-208

Authors:

MH Key, WJ Blyth, AE Dangor, P Dhez, A Djoui, L Dwivedi, M Holden, PB Holden, P Jaegle, CLS Lewis, AG McPhee, A Modena, M Nakai, D Neely, PA Norreys, AA Offenberger, GJ Pert, JA Ploues, SG Preston, SA Ramsden, SJ Rose, B Russ, CG Smith, A Sureau, GJ Tallents, F Walsh, JS Wark, YL You, J Zhang
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Efficient extreme UV harmonics generated from picosecond laser pulse interactions with solid targets

PHYSICAL REVIEW LETTERS 76:11 (1996) 1832-1835

Authors:

PA Norreys, M Zepf, S Moustaizis, AP Fews, J Zhang, P Lee, M Bakarezos, CN Danson, A Dyson, P Gibbon, P Loukakos, D Neely, FN Walsh, JS Wark, AE Dangor
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