Observation of transverse interference fringes on an atom laser beam

R. G. Dall; L. J. Byron; A. G. Truscott; G. R. Dennis; M. T. Johnsson; M. Jeppesen; J. J. Hope

doi:10.1364/OE.15.017673

Observation of transverse interference fringes on an atom laser beam

R. G. Dall^*, L. J. Byron, A. G. Truscott, G. R. Dennis, M. T. Johnsson, M. Jeppesen, J. J. Hope

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Using the unique detection properties offered by metastable helium atoms we have produced high resolution images of the transverse spatial profiles of an atom laser beam. We observe fringes on the beam, resulting from quantum mechanical interference between atoms that start from rest at different transverse locations within the outcoupling surface and end up at a later time with different velocities at the same transverse position. Numerical simulations in the low output-coupling limit give good quantitative agreement with our experimental data.

Original language	English
Pages (from-to)	17673-17680
Number of pages	8
Journal	Optics Express
Volume	15
Issue number	26
DOIs	https://doi.org/10.1364/OE.15.017673
Publication status	Published - 24 Dec 2007

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AU - Dall, R. G.

AU - Byron, L. J.

AU - Truscott, A. G.

AU - Dennis, G. R.

AU - Johnsson, M. T.

AU - Jeppesen, M.

AU - Hope, J. J.

PY - 2007/12/24

Y1 - 2007/12/24

N2 - Using the unique detection properties offered by metastable helium atoms we have produced high resolution images of the transverse spatial profiles of an atom laser beam. We observe fringes on the beam, resulting from quantum mechanical interference between atoms that start from rest at different transverse locations within the outcoupling surface and end up at a later time with different velocities at the same transverse position. Numerical simulations in the low output-coupling limit give good quantitative agreement with our experimental data.

AB - Using the unique detection properties offered by metastable helium atoms we have produced high resolution images of the transverse spatial profiles of an atom laser beam. We observe fringes on the beam, resulting from quantum mechanical interference between atoms that start from rest at different transverse locations within the outcoupling surface and end up at a later time with different velocities at the same transverse position. Numerical simulations in the low output-coupling limit give good quantitative agreement with our experimental data.

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Observation of transverse interference fringes on an atom laser beam

Abstract

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