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arXiv · 1103.4310

Mechanism of Laser-induced Field Emission

Hirofumi Yanagisawa·Matthias Hengsberger·Dominik Leuenberger·Martin Klöckner·Christian Hafner·Thomas Greber·Jürg Osterwalder
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Abstract

We have measured electron energy distribution curves (EDCs) of the laser-induced field emission from a tungsten tip. Field emission from photo-excited nonequilibrium electron distributions were clearly observed, while no enhanced field emission due to optical electric fields appeared up to values of 1.3 V/nm. Thus, we experimentally confirm the emission mechanism. Simulated transient EDCs show that electron dynamics plays a significant role in the laser-induced field emission. The results should be useful to find optimal parameters for defining the temporal and spectral characteristics of electron pulses for many applications based on pulsed field emission.

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Hirofumi Yanagisawa, Matthias Hengsberger, Dominik Leuenberger, Martin Klöckner, Christian Hafner, Thomas Greber, Jürg Osterwalder. 2011-03-22. Mechanism of Laser-induced Field Emission. https://doi.org/10.1103/physrevlett.107.087601

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