PhysRevA.74.063421.pdf (701.17 kB)
Efficient Photoionization-Loading of Trapped Cadmium Ions with Ultrafast Pulses
journal contribution
posted on 2023-06-08, 00:44 authored by L Deslauriers, M Acton, B B Blinov, K-A Brickman, P C Haljan, Winfried HensingerWinfried Hensinger, D Hucul, S Katnik, R N Kohn Jr, P J Lee, M J Madsen, P Maunz, S Olmschenk, D L Moehring, D Stick, J Sterk, M Yeo, K C Younge, C MonroeAtomic cadmium ions are loaded into radiofrequency ion traps by photoionization of atoms in a cadmium vapor with ultrafast laser pulses. The photoionization is driven through an intermediate atomic resonance with a frequency-quadrupled mode-locked Ti:sapphire laser that produces pulses of either 100-fs or 1-ps duration at a central wavelength of 229 nm. The large bandwidth of the pulses photoionizes all velocity classes of the Cd vapor, resulting in a high loading efficiency compared to previous ion trap loading techniques. Measured loading rates are compared with a simple theoretical model, and we conclude that this technique can potentially ionize every atom traversing the laser beam within the trapping volume. This may allow the operation of ion traps with lower levels of background pressures and less trap electrode surface contamination. The technique and laser system reported here should be applicable to loading most laser-cooled ion species.
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Publication status
- Published
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- Published version
Journal
Physical Review AISSN
1050-2947Publisher
American Physical SocietyExternal DOI
Issue
6Volume
74Page range
063421Pages
10.0Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-10Usage metrics
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