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Plasma mirror and temperature evolution for short pulse KrF lasers

2010; Taylor & Francis; Volume: 165; Issue: 6-10 Linguagem: Inglês

10.1080/10420151003715457

1042-0150

I Földeş, Dániel Csáti, Ferenc Lajos Szűcs, S. Szatmári,

Solid State Laser Technologies

Abstract The plasma mirror effect is demonstrated by the KrF laser for the first time. It is shown that plasma reflectivity starts to increase at the plasma threshold of 1012 W/cm2 and it saturates at 1014 W/cm2 with ∼ 35% reflectivity. Vacuum ultraviolet spectroscopy of laser plasmas on low-Z material shows that the optimum reflectivity conditions are reached at plasma temperatures of 20–25 eV. Keywords: short pulse laserlaser plasmaplasma mirrorKrF laser Acknowledgements This work, supported by the European Communities under the contract of the Association between EURATOM and the Hungarian Academy of Sciences, was carried out within the framework of the European Fusion Development Agreement. The views and opinions expressed herein do not necessarily reflect those of the European Commission. It was also supported by the Hungarian OTKA foundation no. 60531 and by the IAEA CRP on Pathways to Inertial Fusion – An Integrated Approach, Research Contract no. HUN 13759. It was also a part of a COST activity, MP0601.