Attosecond pulse walk-off in high-order harmonic generation

Summary, in English

We study the influence of the generation conditions on the group delay of attosecond pulses in high-order harmonic generation in gases. The group delay relative to the fundamental field is found to decrease with increasing gas pressure in the generation cell, reflecting a temporal walk-off due to the dispersive properties of the nonlinear medium. This effect is well reproduced using an on-axis phase-matching model of high-order harmonic generation in an absorbing gas. (C) 2014 Optical Society of America

• Författare: David Kroon; Diego Guenot; Marija Kotur; E. Balogh; Esben Witting Larsen; Christoph Heyl; Miguel Miranda; Mathieu Gisselbrecht; Johan Mauritsson; Per Johnsson; K. Varju; Anne L'Huillier; Cord Arnold
• Avdelning/ar: Atomfysik; Synkrotronljusfysik
• Publiceringsår: 2014
• Språk: Engelska
• Sidor: 2218-2221
• Publikation/Tidskrift/Serie: Optics Letters
• Volym: 39
• Issue: 7
• Länkar: http://dx.doi.org/10.1364/OL.39.002218
• Dokumenttyp: Artikel i tidskrift
• Förlag: Optical Society of America
• Ämne: Atom and Molecular Physics and Optics
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0146-9592