We report the first real-time feedback control of an atom laser. The unique feature of metastable helium atoms, the production of ions in the atom laser outcoupling process, is exploited to actively control the spatial location inside the Bose-Einstein condensate where outcoupling occurs. Unlike alkali atom lasers, this provides almost instantaneous feedback which reduces frequency, amplitude and spatial mode fluctuations in the atom laser beam.

Optics ExpressSep 4, 20081 citation

Quantum-Atom Optics Downunder (QAO)

Transverse fringes and pattern formation in an atom laser profile

R. G. Dall, L. J. Byron, K. G. H. Baldwin, Andrew G. Truscott, G. R. Dennis, Mattias Johnsson, J. J. Hope

Published Jan 1, 2007• 0 citations

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Abstract

DOI: 10.1364/qao.2007.qwb4

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{\mathrm{H}}^{*}(2s),

either by measuring the atom flux through a fixed slit or by scanning the beam profile through a movable hole. The results are in good agreement with the theoretical predictions.