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

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

Content Provider	Semantic Scholar
Author	Schmidt, Bruno Eugen Shiner, Andrew D. Giguére, Mathieu Lassonde, Philippe Trallero-Herrero, Carlos Kieffer, J. C. Corkum, P. B. Villeneuve, David M. Légaré, François
Copyright Year	2012
Abstract	We 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 ?m) and 1.6-cycle pulses at the Idler wavelength (1.8 ?m) in the sub-millijoule regime have been generated. New compression schemes can be applied at 1.8 ?m 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.
Starting Page	074008
Ending Page	074008
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1088/0953-4075/45/7/074008
Volume Number	45
Alternate Webpage(s)	http://www.attoscience.ca/pdf/Schmidt_JPB_2012.pdf
Alternate Webpage(s)	https://doi.org/10.1088/0953-4075%2F45%2F7%2F074008
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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