Planar microwave structures for electron guiding

Journal article

Publication Details

Author(s): Hoffrogge J, Hommelhoff P
Journal: New Journal of Physics
Publisher: Institute of Physics: Open Access Journals / Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft
Publication year: 2011
Volume: 13
Pages range: 095012
ISSN: 1367-2630


We present microwave electrode structures suited for guiding electrons propagating in a purely electric, alternating quadrupole field. In a first experiment using a standing wave on an electrically short structure, we previously demonstrated the general concept of electron confinement in microwave fields. Here, we discuss the extension to electrically long structures supporting travelling microwave excitations. This requires a modal decomposition of the voltage patterns on the multiconductor transmission line formed by the electrodes. We show that the use of a general five-wire structure leads to the distortion of the guiding potential upon propagation due to differing modal propagation constants. This can be avoided by implementing a coupled microstrip configuration with elevated signal electrodes. With structures like these, complex geometries connecting different beam manipulation elements can be realized, enabling new forms of electron experiments with guided matter waves.

FAU Authors / FAU Editors

Hommelhoff, Peter Prof. Dr.
Lehrstuhl für Laserphysik

External institutions
Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik

How to cite

Hoffrogge, J., & Hommelhoff, P. (2011). Planar microwave structures for electron guiding. New Journal of Physics, 13, 095012.

Hoffrogge, J., and Peter Hommelhoff. "Planar microwave structures for electron guiding." New Journal of Physics 13 (2011): 095012.


Last updated on 2018-09-08 at 15:53