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Proceedings Paper

Adaptive temporal and spatial shaping of coherent soft x-rays
Author(s): Carsten Winterfeldt; Thomas Pfeifer; Dominik Walter; Ron Kemmer; Alexander Paulus; Robert Spitzenpfeil; Gustav Gerber; Christian Spielmann
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Paper Abstract

Using adaptive temporal pulse shaping of the driving 800 nm laser pulses, we demonstrate for the first time the complete control over the XUV spectrum of high-order harmonics, generated in a gas-filled hollow fiber. We achieve both the enhancement and the suppression of single or several selected harmonic orders. These arbitrarily shaped soft-x-ray spectra will allow for important modifications of the resulting harmonic pulses in the temporal domain. Experiments are in progress to determine the time structure of the shaped harmonics using a cross-correlation technique. This constitutes first steps towards direct attosecond pulse shaping in the soft-x-ray domain. Moreover, we show that harmonic generation in a hollow-core fiber can be enhanced by coupling into a single fiber mode using a feedback-controlled adaptive two-dimensional spatial light modulator. Temporal and spatial tailoring of harmonics opens the way towards optimal control in the soft-x-ray domain.

Paper Details

Date Published: 25 April 2006
PDF: 12 pages
Proc. SPIE 6187, Photon Management II, 61870F (25 April 2006); doi: 10.1117/12.671780
Show Author Affiliations
Carsten Winterfeldt, Univ. Würzburg (Germany)
Thomas Pfeifer, Univ. Würzburg (Germany)
Dominik Walter, Univ. Würzburg (Germany)
Ron Kemmer, Univ. Würzburg (Germany)
Alexander Paulus, Univ. Würzburg (Germany)
Robert Spitzenpfeil, Univ. Würzburg (Germany)
Gustav Gerber, Univ. Würzburg (Germany)
Christian Spielmann, Univ. Würzburg (Germany)

Published in SPIE Proceedings Vol. 6187:
Photon Management II
John T. Sheridan; Frank Wyrowski, Editor(s)

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