Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 72, Issue 1, Pages 30-35Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1329904
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A novel laser-based apparatus is presented utilizing high harmonic radiation for visible pump-EUV probe experiments on ultrafast processes. True femtosecond temporal resolution is achieved by a monochromator making use of dedicated narrowband multilayer mirrors rather than gratings for selection of single harmonic orders in the photon energy range between 66 and 73 eV. First applications of this new light source for electron spectroscopy on gas phase helium and xenon demonstrate the selection of a single high harmonic order with the intensity ratio between the selected and its adjacent harmonic not exceeding 10:1. A pump-probe study of hot electron production on a solid Pt(110) surface yields a cross-correlation corresponding to a temporal system resolution of 100 fs. (C) 2001 American Institute of Physics.
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