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Phys. Rev. Lett. 96, 033003 (2006) [4 pages]

Systematic Study of the 87Sr Clock Transition in an Optical Lattice

Andrew D. Ludlow, Martin M. Boyd, Tanya Zelevinsky, Seth M. Foreman, Sebastian Blatt, Mark Notcutt, Tetsuya Ido, and Jun Ye
JILA and Department of Physics, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA
Received 5 August 2005; revised 12 January 2006; published 26 January 2006

With ultracold 87Sr confined in a magic wavelength optical lattice, we present the most precise study (2.8 Hz statistical uncertainty) to date of the 1S0-3P0 optical clock transition with a detailed analysis of systematic shifts (19 Hz uncertainty) in the absolute frequency measurement of 429 228 004 229 869 Hz. The high resolution permits an investigation of the optical lattice motional sideband structure. The local oscillator for this optical atomic clock is a stable diode laser with its hertz-level linewidth characterized by an octave-spanning femtosecond frequency comb.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.96.033003
DOI: 10.1103/PhysRevLett.96.033003
PACS: 32.80.Qk; 42.62.Eh; 42.62.Fi
  • 32.80.Qk
    Coherent control of atomic interactions with photons
  • 42.62.Eh
    Metrological applications of lasers; optical frequency synthesizers for precision spectroscopy
  • 42.62.Fi
    Laser spectroscopy
  • YEAR: 2006
KEYWORDS: strontium, atomic clocks, laser cooling, frequency measurement, atom-photon collisions, spectral line breadth, spectral line shift

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