Laser Physics

, Volume 19, Issue 4, pp 736–738 | Cite as

Reaching the resolved tunnel regime for a femtosecond oscillator driven field emission electron source

  • P. HommelhoffEmail author
  • C. Kealhofer
  • M. A. Kasevich
Modern Trends in Laser Physics


We report on electron emission from tungsten tips with the help of 800 nm-8 fs laser pulses from a Ti:sapphire laser oscillator. We have measured autocorrelation traces of the exciting laser pulse in the photoelectron current, which allows a measurement of the non-linearity as a function of DC voltage applied to the tip. These data are well described by a numerical integration of the one-dimensional Schrödinger equation. The simulation shows us that electron emission resolves the electric field structure of the driving laser pulse, a regime which is currently an extremely fruitful area of research with atoms in the gas phase. For an 8 fs laser pulse with the correct carrier-envelope phase setting the emission duration is as short as 800 nm.

PACS numbers

78.47.+p 42.79.Hp 79.70.+q 


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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  1. 1.Varian PhysicsStanford UniversityStanfordUSA

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