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4 October 2011 Advances in laser driven soft x-ray lasers at LOA
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We report spatial and spectral characterization an optical-field-ionized high-order harmonic-seeded soft-x-ray laser. We show that it can be controlled between a regular Gaussian shape and a Bessel profile exhibiting several rings via the IR laser pump intensity. The temporal coherence and spectral linewidth of both the seeded and unseeded soft-x-ray lasers were experimentally measured using a varying path difference interferometer. It showed that the high-order harmonic is subject to a strong spectral narrowing during its propagation in the plasma amplifier without rebroadening at saturation. Also, we present a new method to generate ultra-short x-ray laser pulses by using the laser-driven betatron source to photo-pump inner-shell transitions.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Sebban, F. Tissandier, J. Gautier, M. Kozlova, J. P. Goddet, O. Guilbaud, P. Zeitoun, M. Ribière, S. Jacquemot, G. Lambert, G. Maynard, B. Robillard, A. Klisnick, T. Mocek, and J. Nejdl "Advances in laser driven soft x-ray lasers at LOA", Proc. SPIE 8140, X-ray Lasers and Coherent X-ray Sources: Development and Applications IX, 814005 (4 October 2011);


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