A Femtosecond Nanometer Free Electron Source

Abstract

We report a source of free electron pulses based on a field emission tip irradiated by a low-power femtosecond laser. The electron pulses are shorter than 70 fs and originate from a tip with an emission area diameter down to 2 nm. Depending on the operating regime we observe either photofield emission or optical field emission with up to 200 electrons per pulse at a repetition rate of 1 GHz. This pulsed electron emitter, triggered by a femtosecond oscillator, could serve as an efficient source for time-resolved electron interferometry, for time-resolved nanometric imaging and for synchrotrons.

Cited by in corpus (87)

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• Ultrafast time resolved photo-electric emission
• Self-trapping of slow electrons in the energy domain
• Strongly correlated multi-electron bunches from interaction with quantum light
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• Theoretical Atto-nano Physics
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• Ultrafast 4D scanning transmission electron microscopy for imaging of localized optical fields
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• Electron matter wave interferences at high vacuum pressures
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• Loopholes in the interpretation of experiments on the Aharonov-Bohm effect
• Partial Quantum Coherence, Ultrashort Electron Pulse Statistics, and a Plasmon-Enhanced Nanotip Emitter Based on Metallized Optical Fibers
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