Imaging of high harmonic radiation emitted during the interaction of a 20 TW laser with a solid target

D.M. Chambers, S.G. Preston, Matthew Zepf, M. CastroCelin, M.H. Key, J.S. Wark, A.E. Dangor, A. Dyson, D. Neely, P.A. Norreys

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7 Citations (Scopus)

Abstract

We present images of the source of extreme ultraviolet (XUV) harmonic emission at a wavelength of 220 Angstrom from the interaction of a 20 TW, 1.053 mu m Nd:glass laser beam focused to intensities up to 4x10(18) W cm(-2) onto a solid target. From these measurements we determine an upper limit to the source size and brightness of the harmonic emission to show its efficacy as a novel source of short-pulse, coherent XUV radiation. We also demonstrate the empirical scaling of the harmonic generation efficiency with irradiance up to 10(19) W mu m(2) cm(-2), and extrapolate to estimate the possible source brightness at higher irradiances. These source brightnesses are compared to those available from an x-ray laser system. (C) 1997 American Institute of Physics.
Original languageEnglish
Pages (from-to)2055-2058
Number of pages4
JournalJournal of Applied Physics
Volume81
Publication statusPublished - 1997

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