Laser Physics

, Volume 19, Issue 4, pp 736–738

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

Modern Trends in Laser Physics

DOI: 10.1134/S1054660X09040288

Cite this article as:
Hommelhoff, P., Kealhofer, C. & Kasevich, M.A. Laser Phys. (2009) 19: 736. doi:10.1134/S1054660X09040288


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 

Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  1. 1.Varian PhysicsStanford UniversityStanfordUSA

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