Ultrafast electron microscopy (UEM) facilitates microscopic imaging, diffraction, and spectroscopy at picosecond timescales. Electron probe bunches are generated through photoemission by a femtosecond UV laser pulse while a synchronized laser pulse excites a change of state in a sample of choice. I will show the design of the recently constructed UEM at KTH and some results from first model systems using both diffraction and imaging.
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