title: Feedback control of an atom laser.
abstract: 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.
authors.affiliation: ARC Centre of Excellence for Quantum-Atom Optics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australia.
authors.forename: R G
authors.initials: RG
authors.lastname: Dall
authors.forename: C J
authors.initials: CJ
authors.lastname: Dedman
authors.forename: A G
authors.initials: AG
authors.lastname: Truscott
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D007834:Lasers; D008962:Models, Theoretical