Generation of high-order harmonics with ultra-short pulses from filamentation.
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.
Steingrube
Daniel S
DS
Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, D-30167 Hannover, Germany. steingrube@iqo.uni-hannover.de
Schulz
Emilia
E
Binhammer
Thomas
T
Vockerodt
Tobias
T
Morgner
Uwe
U
Kovacev
Milutin
M