A nanoscale vacuum-tube diode triggered by few-cycle laser pulses

Takuya Higuchi, Lothar Maisenbacher, Andreas Liehl, P. Dombi, Peter Hommelhoff

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We propose and demonstrate a nanoscale vacuum-tube diode triggered by few-cycle near-infrared laser pulses. It represents an ultrafast electronic device based on light fields, exploiting near-field optical enhancement at surfaces of two metal nanotips. The sharper of the two tips displays a stronger field-enhancement, resulting in larger photoemission yields at its surface. One laser pulse with a peak intensity of 4.7 × 1011W/cm2 triggers photoemission of ∼16 electrons from the sharper cathode tip, while emission from the blunter anode tip is suppressed by 19 dB to ∼0.2 electrons per pulse. Thus, the laser-triggered current between two tips exhibit a rectifying behavior, in analogy to classical vacuum-tube diodes. According to the kinetic energy of the emitted electrons and the distance between the tips, the total operation time of this laser-triggered nanoscale diode is estimated to be below 1 ps.

Original languageEnglish
Article number051109
JournalApplied Physics Letters
Volume106
Issue number5
DOIs
Publication statusPublished - Feb 2 2015

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vacuum tubes
diodes
cycles
pulses
lasers
photoelectric emission
electrons
augmentation
infrared lasers
near fields
anodes
actuators
cathodes
kinetic energy
electronics
metals

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Higuchi, T., Maisenbacher, L., Liehl, A., Dombi, P., & Hommelhoff, P. (2015). A nanoscale vacuum-tube diode triggered by few-cycle laser pulses. Applied Physics Letters, 106(5), [051109]. https://doi.org/10.1063/1.4907607

A nanoscale vacuum-tube diode triggered by few-cycle laser pulses. / Higuchi, Takuya; Maisenbacher, Lothar; Liehl, Andreas; Dombi, P.; Hommelhoff, Peter.

In: Applied Physics Letters, Vol. 106, No. 5, 051109, 02.02.2015.

Research output: Contribution to journalArticle

Higuchi, T, Maisenbacher, L, Liehl, A, Dombi, P & Hommelhoff, P 2015, 'A nanoscale vacuum-tube diode triggered by few-cycle laser pulses', Applied Physics Letters, vol. 106, no. 5, 051109. https://doi.org/10.1063/1.4907607
Higuchi, Takuya ; Maisenbacher, Lothar ; Liehl, Andreas ; Dombi, P. ; Hommelhoff, Peter. / A nanoscale vacuum-tube diode triggered by few-cycle laser pulses. In: Applied Physics Letters. 2015 ; Vol. 106, No. 5.
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