Impact of spatial inhomogeneities on on-axis pulse reconstruction in femtosecond filaments. (10th April 2015)

• Record Type: Journal Article
• Authors: Brée, Carsten; Kretschmar, Martin; Nagy, Tamas; Kurz, Heiko G; Morgner, Uwe; Kovačev, Milutin
• Is Part Of: Journal of physics. Volume 48:Number 9(2015:May 01)
• Publication Date: 2015-04-10
• Subjects: pulse self-compression -- few-cycle pulses -- pulse characterization; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/0953-4075/48/9/094002
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We demonstrate a strong influence of the spatial beam profile on the vacuum-propagated on-axis pulse shapes for a femtosecond filament in argon. The effects can be minimized by transmitting the filament into the far-field by a laser drilled pinhole setup. Using this method, we can monitor the pulse compression dynamics along the entire longitudinal extension of the filament, including the ionization-induced plasma channel.