Remarkable progress can be observed in recent years in the controlled emission, guiding, and detection of coherent, free electrons. Those methods were applied in matter wave interferometers leading to high phase sensitivities and precise sensor technologies for dephasing influences such as mechanical vibrations or electromagnetic frequencies. However, the previous devices have been large laboratory setups. For future sensor applications or tests of the coherence properties of an electron source, small, portable interferometers are required. Here, we demonstrate a compact biprism electron interferometer that can be used for mobile applications. The design was optimized for small dimensions by beam path simulations. The interferometer has a length between the tip and the superposition plane before magnification of only 47 mm and provides electron interference patterns with a contrast up to 42.7%. The detection of two dephasing frequencies at 50 and 150 Hz was demonstrated applying second order correlation and Fourier analysis of the interference data.
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29 May 2017
Research Article|
June 01 2017
A compact electron matter wave interferometer for sensor technology
A. Pooch
;
A. Pooch
Institute of Physics and Center for Collective Quantum Phenomena in LISA+, University of Tübingen
, Auf der Morgenstelle 15, 72076 Tübingen, Germany
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M. Seidling;
M. Seidling
Institute of Physics and Center for Collective Quantum Phenomena in LISA+, University of Tübingen
, Auf der Morgenstelle 15, 72076 Tübingen, Germany
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M. Layer;
M. Layer
Institute of Physics and Center for Collective Quantum Phenomena in LISA+, University of Tübingen
, Auf der Morgenstelle 15, 72076 Tübingen, Germany
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A. Rembold;
A. Rembold
Institute of Physics and Center for Collective Quantum Phenomena in LISA+, University of Tübingen
, Auf der Morgenstelle 15, 72076 Tübingen, Germany
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A. Stibor
A. Stibor
Institute of Physics and Center for Collective Quantum Phenomena in LISA+, University of Tübingen
, Auf der Morgenstelle 15, 72076 Tübingen, Germany
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Appl. Phys. Lett. 110, 223108 (2017)
Article history
Received:
March 28 2017
Accepted:
May 18 2017
Citation
A. Pooch, M. Seidling, M. Layer, A. Rembold, A. Stibor; A compact electron matter wave interferometer for sensor technology. Appl. Phys. Lett. 29 May 2017; 110 (22): 223108. https://doi.org/10.1063/1.4984839
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