Ultrafast Laser-Induced Electron Emission from Field Emission Tips

  • Catherine KealhoferEmail author
  • Seth M. Foreman
  • Peter Hommelhoff
  • Mark A. Kasevich
Conference paper
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 92)


We describe a laser-triggered electron source based on a field emission tip. Numerical results indicate that the electron emission times can be sub-femtosecond. We are exploring applications of this source to ultrafast SEM, and have begun characterization of emission mechanisms in an alternate tip material, hafnium carbide. Here we observe a higher efficiency in laser emission and, at high power, non-additive scaling as the number of incident laser pulses per second is doubled.


Electron Emission Electron Pulse Emission Mechanism Average Laser Power Optical Cycle 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Catherine Kealhofer
    • 1
    Email author
  • Seth M. Foreman
    • 1
  • Peter Hommelhoff
    • 2
  • Mark A. Kasevich
    • 1
  1. 1.Physics DepartmentStanford UniversityStanfordUSA
  2. 2.Max Planck Institute of Quantum OpticsGarchingGermany

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