Laser-induced ultrafast electron emission from a field emission tip

By Brett Barwick, Chris Corder, J. Strohaber, Nate Chandler-Smith, C. Uiterwaal, H. Batelaan. 2007

156 citations recorded by the source corpus.

We show that a field emission tip electron source that is triggered with a femtosecond laser pulse can generate electron pulses shorter than the laser pulse duration (100 fs). The emission process is sensitive to a power law of the laser intensity, which supports an emission mechanism based on multiphoton absorption followed by over-the-barrier emission. Observed continuous transitions between power laws of different orders are indicative of field emission processes. We show that the source can also be operated so that thermionic emission processes become significant. Understanding these different emission processes is relevant for the production of sub-cycle electron pulses.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Computational Mechanics

View Paper: https://www.semanticscholar.org/paper/489d62879c2a5d4a40e25615ae45fab52bb642ab

Citations in the corpus

• Femtosecond electron diffraction: heralding the era of atomically resolved dynamics (2011, unknown): “source [26–29, 207] with fs-laser photoemission [208–213]”