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Ultrafast Laser-Induced Electron Emission from Field Emission Tips

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

Abstract

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.

Keywords

Electron Emission Electron Pulse Emission Mechanism Average Laser Power Optical Cycle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Catherine Kealhofer
    • 1
  • 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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