Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 52: Ultrashort Laser Pulses II
Q 52.3: Vortrag
Donnerstag, 3. März 2016, 15:00–15:15, a310
Ultrafast streaking of photo-electric emission from tungsten nanotips — •Thomas Juffmann1, Brannon Klopfer1, Gunnar Skulason1, Catherine Kealhofer1, Fan Xiao1, Seth Foreman2, and Mark Kasevich1 — 1Stanford University, California 94305, USA — 2University of San Francisco, California 94117, USA
We present a new technique to study the photo-electric effect with femtosecond resolution. Laser-triggered electrons emitted from a tungsten nanotip interact with a cavity enhanced radiofrequency field. The final kinetic energy of the electrons depends on the phase of the RF field at the time of emission. We reach femtosecond resolution and a dynamic range of tens of picoseconds. Our results have implications for ultrafast electron microscopy and diffraction.