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Anomalous high-order harmonic generation

Abstract : We present experimental harmonic spectra showing anomalously high orders generated at low laser intensities (around 2 × 10^13 W cm^−2) in argon, krypton and xenon. These high orders cannot be explained with the usual three step model that predicts the existence of a sharp cut-off after the region of constant efficiency called the plateau: the observed orders are far above the cut-off limit inferred from the laser intensity in the medium. The systematic study of these spectra are presented, and some possible theoretical models are explored.
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Submitted on : Monday, March 7, 2011 - 3:49:25 PM
Last modification on : Thursday, October 6, 2022 - 10:44:54 AM

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C. Valentin, S. Kazamias, D. Douillet, G. Grillon, Thierry Lefrou, et al.. Anomalous high-order harmonic generation. Journal of Physics B: Atomic, Molecular and Optical Physics, IOP Publishing, 2004, 37 (13), pp.2661-2675. ⟨10.1088/0953-4075/37/13/004⟩. ⟨hal-00574266⟩



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