Optical Control of Young's Type Double-slit Interferometer for Laser-induced Electron Emission from a Nano-tip
Kling, Matthias F.
- Journal Article
Rights / licenseCreative Commons Attribution 4.0 International
Interference experiments with electrons in a vacuum can illuminate both the quantum and the nanoscale nature of the underlying physics. An interference experiment requires two coherent waves, which can be generated by splitting a single coherent wave using a double slit. If the slit-edge separation is larger than the coherence width at the slit, no interference appears. Here we employed variations in surface barrier at the apex of a tungsten nano-tip as slits and achieved an optically controlled double slit, where the separation and opening-and-closing of the two slits can be controlled by respectively adjusting the intensity and polarization of ultrashort laser pulses. Using this technique, we have demonstrated interference between two electron waves emitted from the tip apex, where interference has never been observed prior to this technique because of the large slit-edge separation. Our findings pave the way towards simple time-resolved electron holography on e.g. molecular adsorbates employing just a nano-tip and a screen. Show more
Journal / seriesScientific Reports
Pages / Article No.
PublisherNature Publishing Group
131701 - Spatio-temporal Control of Coherent Electron Emission (SNF)
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