期刊
APPLIED PHYSICS B-LASERS AND OPTICS
卷 71, 期 2, 页码 207-210出版社
SPRINGER-VERLAG
DOI: 10.1007/s003400000296
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We have demonstrated that resonance-enhanced two-photon ionization of atomic beams provides an effective tool for isotope selective loading of ions into a linear Paul trap. Using a tunable, narrow-bandwidth, continuous wave (cw) laser system for the ionization process, we have succeeded in producing Mg+ and Ca+ ions at rates controlled by the atomic beam flux, the laser intensity, and the laser frequency detuning from resonance. We have observed that with a proper choice of control parameters, it is rather easy to load a specific number of ions into a string. This observation has direct applications in quantum optics and quantum computation experiments. Furthermore, resonant photoionization loading facilitates the formation of large isotope-pure Coulomb crystals.
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