Spatially resolved photoionization of ultracold atoms on an atom chip

Journal Article · Fri Jun 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.063605· OSTI ID:20991195

Kraft, S; Guenther, A; Fortagh, J; Zimmermann, C ^[1]

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1. Physikalisches Institut der Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)

We report on photoionization of ultracold magnetically trapped Rb atoms on an atom chip. The atoms are trapped at 5 {mu}K in a strongly anisotropic trap. Through a hole in the chip with a diameter of 150 {mu}m, two laser beams are focused onto a fraction of the atomic cloud. A first laser beam with a wavelength of 778 nm excites the atoms via a two-photon transition to the 5D level. With a fiber laser at 1080 nm the excited atoms are photoionized. Ionization leads to depletion of the atomic density distribution observed by absorption imaging. The resonant ionization spectrum is reported. The setup used in this experiment is suitable not only to investigate mixtures of Bose-Einstein condensates and ions but also for single-atom detection on an atom chip.

• OSTI ID: 20991195
• Journal Information: Physical Review. A, Vol. 75, Issue 6; Other Information: DOI: 10.1103/PhysRevA.75.063605; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ANISOTROPY
ATOMS
BOSE-EINSTEIN CONDENSATION
DETECTION
DISTRIBUTION
ENERGY-LEVEL TRANSITIONS
IONS
LASER RADIATION
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PHOTONS
POLARIZATION
RADIATION PRESSURE
RUBIDIUM
TEMPERATURE RANGE 0000-0013 K
TRAPPING
TRAPS
WAVELENGTHS