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DOE OSTI · 1642325

Towards full surface Brillouin zone mapping by coherent multi-photon photoemission

Li, Andi·James, Namitha Ann·Wang, Tianyi·Wang, Zehua·Petek, Hrvoje·Reutzel, Marcel
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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.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICSPhysicscoherent multi-photon photoemissionphotoemission horizontime- and angle-resolved photoemission

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Li, Andi, James, Namitha Ann, Wang, Tianyi, Wang, Zehua, Petek, Hrvoje, Reutzel, Marcel. 2020-07-22. Towards full surface Brillouin zone mapping by coherent multi-photon photoemission. https://doi.org/10.1088/1367-2630%2Fab98d6

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