Doppler-Free Spectroscopy of theS0<mml:none/><mml:mprescripts/><mml:none/>1−P0<mml:none/><mml:mprescripts/><mml:none/>3Optical Clock Transition in Laser-Cooled Fermionic Isotopes of Neutral Mercury

2008/07/22 by M. Petersen, Michael Petersen, Radu Chicireanu +9 · 1 citation
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #physics.atom-ph #quant-ph

paper · pdf · doi:10.1103/physrevlett.101.183004

arxiv created 2008/07/22 · openalex publication_date 2008/10/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We report direct laser spectroscopy of the ¹S₀\mathrm\text\ensuremath-³P₀ transition at 265.6 nm in fermionic isotopes of neutral mercury in a magneto-optical trap. Measurements of the frequency against the LNE-SYRTE primary reference using an optical frequency comb yield 1 128 575 290 808.4\ifmmode±\else\textpm\fi5.6 kHz in ¹⁹⁹Hg and 1 128 569 561 139.6\ifmmode±\else\textpm\fi5.3 kHz in ²⁰¹Hg. The uncertainty, allowed by the observation of the Doppler-free recoil doublet, is 4 orders of magnitude lower than previous indirect determinations. Mercury is a promising candidate for future optical lattice clocks due to its low sensitivity to blackbody radiation.

Citations

• Sr<mml:mprescripts/><mml:none/>87Lattice Clock with Inaccuracy below10−15

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• Searching for new physics through atomic, molecular and optical precision measurements