Resonance-enhanced isotope-selective photoionization of YbI for ion trap loading

Johanning, M.; Braun, A.; Eiteneuer, D.; Paape, C.; Balzer, Chr.; Neuhauser, W.; Wunderlich, Christof

doi:10.1007/s00340-011-4502-7

Cited by 21 publications

(24 citation statements)

References 44 publications

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“…These close transitions result in overlapping of the fluorescence spots and cannot be resolved by the spot method. The isotope-shift data presented in Table I for the Yb 1 S 0 ↔ 1 P 1 transitions are in very good agreement with previously published work [27,[29][30][31].…”

Section: Fluorescence Spot Techniquesupporting

confidence: 80%

“…To ionize an Yb atom a 399-nm photon is required to drive the 1 S 0 ↔ 1 P 1 transition where a further 369-nm photon excites an electron past the continuum [22,27]. In the ion-trapping experiment the atomic oven and the 399-nm laser made an angle of 63…”

Section: Doppler-shifted Frequency Measurementsmentioning

confidence: 99%

“…Knowledge of the 1 S 0 ↔ 1 P 1 transition line in atomic Yb and of the corresponding frequency shifts for the stable isotopes is very important in these experiments as it allows for laser cooling and isotope selective photoionisation [20,22,[25][26][27]. Various methods have been used to investigate these transitions and the corresponding isotope shifts [28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

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Doppler-free Yb spectroscopy with the fluorescence spot technique

2010

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We demonstrate a simple technique to measure the resonant frequency of the 398.9-nm 1 S 0 ↔ 1 P 1 transition for the different Yb isotopes. The technique, which works by observing and aligning fluorescence spots, has enabled us to measure transition frequencies and isotope shifts with an accuracy of 60 MHz. We provide wavelength measurements for the transition that differ from previously published work. Our technique also allows for the determination of Doppler-shifted transition frequencies for photoionization experiments when the atomic beam and the laser beam are not perpendicular and furthermore allows us to determine the average velocity of the atoms along the direction of the atomic beam.

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Section: Fluorescence Spot Techniquesupporting

confidence: 80%

Section: Doppler-shifted Frequency Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Doppler-free Yb spectroscopy with the fluorescence spot technique

2010

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“…We create collimated beams of neutral ytterbium atoms by ohmic heating of a small sample of granular ytterbium in a miniature tube-shaped steel oven (for design, modeling, and operation, see [45,48]). Two identical ovens, mounted to the oven holder (see Fig.…”

Section: Loading and Trappingmentioning

confidence: 99%

Thick-film technology for ultra high vacuum interfaces of micro-structured traps

et al. 2012

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We adopt thick-film technology to produce ultra high vacuum compatible interfaces for electrical signals. These interfaces permit voltages of hundreds of volts and currents of several amperes and allow for very compact vacuum setups, useful in quantum optics in general, and in particular for quantum information science using miniaturized traps for ions (Kielpinski et al. in Nature 417:709, 2002) or neutral atoms (Folman et al. circuits can also be useful as pure in-vacuum devices. We demonstrate a specific interface which provides 11 current feedthroughs, more than 70 dc feedthroughs and a feedthrough for radio frequencies. We achieve a pressure in the low 10 −11 mbar range and demonstrate the full functionality of the interface by trapping chains of cold ytterbium ions, which requires the presence of all of the above mentioned signals. In order to supply precise time-dependent voltages to the ion trap, a versatile multi-channel device has been developed.

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“…Additional beneficial effects, like strongly reduced static charging of dielectrics [9], lower motional heating rates of the ions after loading due to the suppression of patch potentials [10] and easier loading of surface-electrode traps with a substantially reduced trap depth [11] is of great advantage in the laboratories. Loading of Paul traps by narrowband cw photoionization [12] has been achieved by several groups on a growing number of atomic species (Ba [13,14], Mg [15], Ca [9,16,17], Yb [18], Sr [19,20], In [21] etc.). Several of these schemes have been applied to photoionization loading techniques that substitute the resistively heated atomic oven as source of neutral atoms.…”

mentioning

confidence: 99%

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

2012

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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 the strong dipole-allowed transition 6s 2 1 S 0 → 6s6p 1 P 1 at λ = 553 nm as a first step towards ionization is compared to the established technique of using a weak intercombination line (6s 2 1 S 0 → 5d6p 3 D 1 , λ = 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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Resonance-enhanced isotope-selective photoionization of YbI for ion trap loading

Cited by 21 publications

References 44 publications

Doppler-free Yb spectroscopy with the fluorescence spot technique

Doppler-free Yb spectroscopy with the fluorescence spot technique

Thick-film technology for ultra high vacuum interfaces of micro-structured traps

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

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