title: Pulse compression of phase-matched high harmonic pulses from a time-delay compensated monochromator.
abstract: Single 32.6 eV high harmonic pulses from a time-delay compensated monochromator were compressed down to 11 ± 3 fs by completely compensating for the pulse-front tilt. The photon flux was intensified up to 5.7×10(9) photons/s on target by implementing high harmonic generation under a phase matching condition in a hollow fiber used for increasing the interaction length. The output photon flux on target from the monochromator was comparable to that from a small synchrotron facility, while the pulse duration was more than three orders of magnitude shorter. This high harmonic beam line fulfills two requirements for time-resolved spectroscopy in extreme ultraviolet region, namely, ultrashort pulses and high photon flux.
authors.affiliation: Department of Applied Physics, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan.
authors.forename: Hironori
authors.initials: H
authors.lastname: Igarashi
authors.forename: Ayumu
authors.initials: A
authors.lastname: Makida
authors.forename: Motohiko
authors.initials: M
authors.lastname: Ito
authors.forename: Taro
authors.initials: T
authors.lastname: Sekikawa