Nonlinear photoemission from a silver single crystal is investigated by femtosecond laser pulses in a perturbative regime. A clear observation of above-threshold photoemission in solids is reported for the first time. The ratio between the three-photon above-threshold and the two-photon Fermi edges is found to be 10-4. This value constitutes the only available benchmark for theories aimed at understanding the mechanism responsible for above-threshold photoemission in solids.

Experimental evidence of above-threshold photoemission in solids

FAUSTI, DANIELE;PARMIGIANI, FULVIO
2005-01-01

Abstract

Nonlinear photoemission from a silver single crystal is investigated by femtosecond laser pulses in a perturbative regime. A clear observation of above-threshold photoemission in solids is reported for the first time. The ratio between the three-photon above-threshold and the two-photon Fermi edges is found to be 10-4. This value constitutes the only available benchmark for theories aimed at understanding the mechanism responsible for above-threshold photoemission in solids.
2005
http://prl.aps.org/abstract/PRL/v94/i3/e037601
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/1698756
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