Collimated Field Emission Beams from Metal Double-Gate Nanotip Arrays Optically Excited via Surface Plasmon Resonance

The generation of collimated electron beams from metal double-gate nanotip arrays excited by near infrared laser pulses is studied. Using electromagnetic and particle tracking simulations, we showed that electron pulses with small rms transverse velocities are efficiently produced from nanotip array...

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Bibliographic Details
Published in:Applied physics express 2013-11, Vol.6 (11), p.114301-114301-4
Main Authors: Helfenstein, Patrick, Mustonen, Anna, Feurer, Thomas, Tsujino, Soichiro
Format: Article
Language:English
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Summary:The generation of collimated electron beams from metal double-gate nanotip arrays excited by near infrared laser pulses is studied. Using electromagnetic and particle tracking simulations, we showed that electron pulses with small rms transverse velocities are efficiently produced from nanotip arrays by laser-induced field emission with the laser wavelength tuned to surface plasmon polariton resonance of the stacked double-gate structure. The result indicates the possibility of realizing a metal nanotip array cathode that outperforms state-of-the-art photocathodes.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.6.114301