title: Vacuum ultraviolet pulses of 11 fs from fifth-harmonic generation of a Ti:sapphire laser.
abstract: We demonstrate that in a short Ar cell, generation of the fifth harmonic from 12 fs pulses at 810 nm directly results in ultrashort vacuum UV pulses at 162 nm. They have a spectral width of approximately 5 nm and a duration of 11+/-1 fs (1.4 times the transform limit), as measured by cross correlation with the fundamental pulses. Their energy (estimated to 4 nJ) turned out to be sufficient for use as a pump in time-resolved experiments.
authors.affiliation: Max-Planck-Institut für Quantenoptik, D-85748, Garching, Germany. kyriaki.kosma@mpq.mpg.de
authors.forename: Kyriaki
authors.initials: K
authors.lastname: Kosma
authors.forename: Sergei A
authors.initials: SA
authors.lastname: Trushin
authors.forename: Wolfram E
authors.initials: WE
authors.lastname: Schmid
authors.forename: Werner
authors.initials: W
authors.lastname: Fuss