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Magnet Photo

Prospects and applications of an ultrafast nanometric electron source

Abstract: We focus low power 8-fsec laser pulses on a sharp field emission tip. We infer from experimental observations and numerical calculations that electron emission takes place within 700 attoseonds, i.e. within less than one optical period. Such an ultrafast electron source might find application in time-resolved scanning electron microscopy as well as in future laser accelerators and ultrafast X-ray pulse generation.
Speaker: Peter Hommelhoff - PostDoc Stanford Physics Department
Speaker Bio: Since 2003 Peter Hommelhoff works as a postdoc in Mark Kasevich's lab in Stanford's Physics Department and is currently a Trimble SCPNT fellow. Prior to coming to Stanford he worked as a postdoc in Ted Hansch's lab at the Max Planck Institute for Quantum Optics and Ludwig Maximilian University in Munich. In the same lab in 2002 he obtained his PhD for the first demonstration of Bose-Einstein condensation in a magnetic microtrap ('chip trap') and follow-up experiments. Dr. Hommelhoff holds a Diploma in Physics from the Swiss Federal Institute of Technology (ETH) Zurich.
Poster Link: Poster
Presentation: Presentation on 1/24/2007 (PDF)