Probing of plasmonic fields in space and time using slowelectron holograph

TYPESpecial Seminar - Solid State Institute, Technion
Speaker:Salma Abo Toame
Affiliation:Dept. of Physics and the Solid State Institute, Technionn
Time:12:30 - 13:30
Location:Solid State Auditorium(Entrance)
Remark:M.Sc. Student of Assistant Professor Michael Krueger

Low-energy electron holography (LEEH) is a technique at which coherent beams of electrons of low energy
(< 500eV) are being produced by a point-like source, and irradiate a nearby sample. A holographic pointprojection image of the sample with a magnification of up to 10
6 is formed, which can be recorded on a
distant screen. Low-energy electrons are more sensitive to plasmonic fields than ones of high energy, such
as in transmission-electron-microscopy. Here we developed a simulation in order to investigate the time
and space behavior of emitted electron pulses from the moment they were emitted until reaching the screen
and forming a holographic image after going through an interaction with a plasmonic nanostructure. We
will also report on the progress in the experimental realization of our LEEH microscope. We believe this
study will not only have the potential to reveal new effects in plasmonics, but also to enable us to manipulate
electron wavepackets in space and in time using plasmonic fields.

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