Author:
Li Andi,James Namitha Ann,Wang Tianyi,Wang Zehua,Petek Hrvoje,Reutzel Marcel
Abstract
Abstract
We report a novel approach for coherent multi-photon photoemission in the entire Brillouin zone with infrared light that is readily implemented in a laboratory setting. We excite a solid state material, Ag(110), with intense femtosecond laser pulses to excite higher-order multi-photon photoemission; angle-resolved electron spectroscopic acquisition records photoemission at large in-plane momenta involving optical transitions from the occupied to unoccupied bands of the sample that otherwise might remain hidden by the photoemission horizon. We propose this as a complementary ultrafast method to time- and angle-resolved two-color, e.g. infrared pump and extreme ultraviolet probe, photoemission spectroscopy, with the advantage of being able to measure and control the coherent electron dynamics.
Funder
U.S. Department of Energy
Alexander von Humboldt-Stiftung
Subject
General Physics and Astronomy
Cited by
12 articles.
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