Ultrashort laser-induced electron photoemission: a method to characterize metallic photocathodes

The photoemission properties of metallic photocathodes are studied by a time-resolved single-photon laser technique in the femtosecond regime. Experimental results obtained for different metals (Au, Cu, W, Al, Fe) are interpreted by a theoretical model, taking into account electron-electron and elec...

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Bibliographic Details
Published inJournal of physics. D, Applied physics Vol. 34; no. 4; pp. 499 - 505
Main Authors Papadogiannis, N A, Moustaizis, S D
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 21.02.2001
Institute of Physics
Subjects
Clean metal, semiconductor, and insulator surfaces
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron and ion emission by liquids and solids; impact phenomena
Exact sciences and technology
Photoemission and photoelectron spectra
Physics
Physical radiation effects
Metals
Thermalization
Electron-phonon interactions
Experimental study
Fermi Dirac distribution
Electron-electron interactions
Photocathodes
Time resolution
Ultrashort pulse
Laser radiation
Models
Photoelectric emission
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Summary:The photoemission properties of metallic photocathodes are studied by a time-resolved single-photon laser technique in the femtosecond regime. Experimental results obtained for different metals (Au, Cu, W, Al, Fe) are interpreted by a theoretical model, taking into account electron-electron and electron-phonon dynamics during the illumination by ultrashort, high-intensity ultraviolet laser pulses. This model points out the physical process of ultrashort photoemission from metals and the correlation of microscopic transient effects with macroscopic steady-state characteristics.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/34/4/310