Nonlinear photoemission from W and Cu investigated by total-yield correlation measurements
Year: 1997
Authors: Bartoli A., Ferrini G., Fini L., Gabetta G., Parmigiani F., Arecchi F.T.
Autors Affiliation: Dep. of Physics and European Laboratory for Non-Linear Spectroscopy, University of Florence, Italy;
INFM and Dep. of Physics, Polytechnic of Milan, Italy;
Materials Division CISE Tecnologie Innovative SpA, milan, Italy;
Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Abstract: Nonlinear photoelectric emission from Cu and W is investigated by subpicosecond laser pulses. Using a pump and probe technique, total-yield correlation measurements are obtained without space-charge saturation. The effects of the heating of the conduction electrons induced by the laser pulses are shown, considering the peak to background contrast ratio of the experimental correlation trace. The present analysis clarifies the consequences of a transient nonequilibrium temperature difference between electrons and the lattice on the correlation trace, confirming for W the presence of a thermally assisted photoemission mechanism.
Journal/Review: PHYSICAL REVIEW B
Volume: 56 (3) Pages from: 1107 to: 1110
KeyWords: Nonequilibrium Electron; Photoelectric-emission; Femtosecond; Tungsten; Metals; CopperDOI: 10.1103/PhysRevB.56.1107Citations: 13data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-27References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here