Spectral line shape variations in time-resolved photoemission from a solid.
Phys Rev Lett
; 99(24): 247601, 2007 Dec 14.
Article
em En
| MEDLINE
| ID: mdl-18233488
ABSTRACT
Laser assisted photoemission by a subfemtosecond ultraviolet pulse is studied by solving the time-dependent Schrödinger equation for a one-dimensional model crystal. Without the laser field, the shape and the energy location of the spectrum are determined by the energy dependence of the photoemission cross section. In the presence of the laser field, the time growth of the population of the final state is predicted to cause extremely sharp variations of spectral width as a function of release time. This can help enhance time resolution of the measurements. A simple phenomenological model to describe the line shape is proposed.
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MEDLINE
Tipo de estudo:
Prognostic_studies
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Qualitative_research
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Alemanha