Vacuum ultraviolet pulses of 11 fs from fifth-harmonic generation of a Ti:sapphire laser.
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.
Kosma
Kyriaki
K
Max-Planck-Institut für Quantenoptik, D-85748, Garching, Germany. kyriaki.kosma@mpq.mpg.de
Trushin
Sergei A
SA
Schmid
Wolfram E
WE
Fuss
Werner
W