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Updated: Jun 20, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Generation of high-order harmonics with ultra-short pulses from filamentation
Daniel S Steingrube1, Emilia Schulz, Thomas Binhammer
1Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, D-30167 Hannover, Germany. steingrube@iqo.uni-hannover.de
Abstract:
7-fs-pulses with 0.3 mJ are obtained after filamentation in argon and compression by double-chirped-mirrors. These pulses are used to generate high-order harmonics in a semi-infinite gas cell in different noble gases. Spectral broadening of high-order harmonics in xenon and argon is observed. In neon, an extended continuous cut-off region down to 10 nm (124 eV) is observed which is to the best of our knowledge the highest cut-off energy obtained by filamented pulses. Our result suggests the feasibility of single attosecond-pulse-generation at both high photon flux and high cut-off energy.
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