By Topic

Frequency metrology on single trapped ions in the weak binding limit: The 3s-3p fine structure doublet in Mg+

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Batteiger, V. ; Max-Planck-Inst. fur Quantenopt., Garching, Germany ; Herrmann, M. ; Knunz, S. ; Saathoff, G.
more authors

Absolute frequency measurements on single trapped ions reached tremendous accuracies by probing narrow transitions in tightly confined ions (resolved sideband regime). A variety of interesting transitions may hardly be studied in this regime, because their transition linewidths well exceed common (secular) trap frequencies. Accurate spectroscopy in the so-called weak binding limit is challenging, since an interrogating laser induces detuning dependent heating and cooling which distorts the line profile. We present both theory and experimental demonstration of a spectroscopic method which essentially removes these limitations and allows us to observe a well understood line shape with high signal-to-noise ratio. We measured the 24Mg and 26Mg component of the 3s-3p fine structure doublet in Mg+. Both lines played an decisive role in the Many Multiplet studies of quasar absorption spectra suggesting a smaller fine-structure constant in early epochs of the universe and where requested for isotopically resolved re-calibration. Our measurement provides absolute transition frequencies, isotope shifts and fine structure splittings that exceed the accuracy of previous literature values by more than two orders of magnitude.

Published in:

Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on

Date of Conference:

14-19 June 2009