期刊
APPLIED PHYSICS B-LASERS AND OPTICS
卷 105, 期 2, 页码 219-223出版社
SPRINGER
DOI: 10.1007/s00340-011-4463-x
关键词
-
资金
- MEXT [21104006]
- JSPS
- Grants-in-Aid for Scientific Research [21102006, 21104006] Funding Source: KAKEN
We have detected excess micromotion of trapped ions by modulating the trapping voltage. This radio-frequency (rf) modulation induces parametric resonance and excites secular motion of the trapped ions when they possess excess motion. This technique has been applied to laser-cooled ions in a linear rf trap and it provides optimum values for compensating the trapping field. We found that the technique has sensitivity equal to or greater than the conventional method for detecting excess micromotion. Because any laser propagation direction can be used, this method is expected to be applied to surface-electrode traps.
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