High harmonic generation with long-wavelength few-cycle laser pulses

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DOIResolve DOI: http://doi.org/10.1088/0953-4075/45/7/074008
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TypeArticle
Journal titleJournal of Physics B : Atomic, Molecular and Optical Physics
ISSN0953-4075
Volume45
Issue7
Article number074008
Pages19; # of pages: 9
AbstractWe report the extension of hollow-core fibre pulse compression to longer wavelengths. High-energy multi-cycle infrared pulses are generated via optical parametric amplification and subsequently broadened in the fibre. 2.5-cycle pulses at the Signal wavelength (1.4 µm) and 1.6-cycle pulses at the Idler wavelength (1.8 µm) in the sub-millijoule regime have been generated. New compression schemes can be applied at 1.8 µm and beyond. In this manner, 1.6-cycle carrier envelope phase stable pulses were generated by linear propagation in the anomalous dispersion regime of bulk glass which surprisingly enables compression below its third-order dispersion limit. Furthermore, a dispersion-free way of controlling the carrier envelope phase is demonstrated. Moreover, we experimentally confirm the increase in high-harmonic cut-off energy with driving laser wavelength and demonstrate the beneficial effect of few-cycle pulses which enable higher saturation intensities on target compared to multi-cycle pulses. It will be an ideal tool for future synthesis of isolated attosecond pulses in the sub-keV regime. With this laser source, we revealed for the first time multi-electron effects in high harmonic generation in xenon.
Publication date
PublisherIOP Publishing
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number21268082
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Record identifierd64b383a-0685-47b4-91a1-79bd6b94d3e6
Record created2013-04-08
Record modified2016-05-09
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