Optical-clock local-oscillator stabilization scheme

V Letchumanan, P Gill, A G Sinclair, E Riis

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Stabilization of a laser to an optical-clock transition has been demonstrated using Ramsey's phase-modulation technique. The technique was implemented using a 674 nm laser and a component of the 5 s S-2(1/2) -> 4d D-2(5/2) optical clock transition in a single Sr-88(+) ion. The lock performance observed was consistent with the short-term stability of the local oscillator. Compared with existing frequency-modulation stabilization schemes, this technique offers advantages for use in single-ion optical clocks through its possible increased resolution and the ability to conveniently compensate known systematic shifts. (c) 2006 Optical Society of America.

Original languageEnglish
Pages (from-to)714-717
Number of pages4
JournalJournal of the Optical Society of America B
Issue number4
Publication statusPublished - Apr 2006


  • frequency standards
  • femtosecond laser
  • single
  • ion
  • spectroscopy
  • transition
  • HG-199(+)


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