Efficient photoionization for barium ion trapping using a dipole-allowed resonant two-photon transition

Details Efficient photoionization for barium ion trapping using a dipole-allowed resonant two-photon transition Efficient photoionization for barium ion trapping using a dipole-allowed resonant two-photon transition

2011-10-18

arxiv.org/abs/1110.4040v1

Physics

Atomic Physics

8 pages, 5 figures

Scientific paper

Two efficient and isotope-selective resonant two-photon ionization techniques for loading barium ions into radio-frequency (RF)-traps are demonstrated. The scheme of using a strong dipole-allowed transition at \lambda=553 nm as a first step towards ionization is compared to the established technique of using a weak intercombination line (\lambda=413 nm). An increase of two orders of magnitude in the ionization efficiency is found favoring the transition at 553 nm. This technique can be implemented using commercial all-solid-state laser systems and is expected to be advantageous compared to other narrowband photoionization schemes of barium in cases where highest efficiency and isotope-selectivity are required.

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