Ultrafast Microscopy: Imaging Light with Photoelectrons on the Nano-Femto Scale
Автор: Pittsburgh Quantum Institute
Загружено: 2017-09-15
Просмотров: 1451
Ultrafast Microscopy: Imaging Ligh with Photoelectrons on the Nano-Femto Scale
Yanan Dai (University of Pittsburgh)
Experimental methods for ultrafast microscopy are advancing rapidly. Promising methods combine ultrafast laser excitation with electron-based imaging or rely on super-resolution optical techniques to enable probing of matter on the nano–femto scale. Among several actively developed methods, ultrafast time-resolved photoemission electron microscopy provides several advantages, among which the foremost are that time resolution is limited only by the laser source and it is immediately capable of probing of coherent phenomena in solid-state materials and surfaces. Here we present recent progress in interference imaging of plasmonic phenomena in metal nanostructures enabled by combining a broadly tunable femtosecond laser excitation source with a low-energy electron microscope.
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