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Absolute frequency measurement of 115In+ clock transition

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10 Author(s)
Wang, Y.H. ; Inst. of Opt., Inf. & Photonics, Erlangen ; Liu, T. ; Dumke, R. ; Stejskal, A.
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We report recent improvement in absolute frequency measurement of the 115In+5s2 1S0-5s5p 3P0 clock transition at 236.5 nm. Using a narrowline laser as a local oscillator, a linewidth of 43 Hz for the transition is resolved. The uncertainty of the transition frequency's centroid is 18 Hz, leading to a fractional uncertainty of 1.4 x 10-14. In the experiment, a single 115In+is trapped in a three-ring Paul-Straubel trap and laser cooled to the trap's vibrational ground states.

Published in:

Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on

Date of Conference:

17-22 June 2007