Precision Frequency Measurement of Visible Intercombination Lines of Strontium

10 December 2003

journal article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 91 (24) , 243002
https://doi.org/10.1103/physrevlett.91.243002

Abstract

We report the direct frequency measurement of the visible 5s(2) 1S0-5s5p 3P1 intercombination line of strontium that is considered a possible candidate for a future optical-frequency standard. The frequency of a cavity-stabilized laser is locked to the saturated fluorescence in a thermal Sr atomic beam and is measured with an optical-frequency comb generator referenced to the SI second through a global positioning system signal. The 88Sr transition is measured to be at 434 829 121 311 (10) kHz. We measure also the 88Sr-86Sr isotope shift to be 163 817.4 (0.2) kHz.

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This publication has 21 references indexed in Scilit:

Single-Stage Sub-Doppler Cooling of Alkaline Earth Atoms
Physical Review Letters, 2003
Recoil-Limited Laser Cooling of ${}^{87}{S r}$ Atoms near the Fermi Temperature
Physical Review Letters, 2003
Ultracold Collision Properties of Metastable Alkaline-Earth Atoms
Physical Review Letters, 2003
Optical frequency metrology
Nature, 2002
Feasibility of Cooling and Trapping Metastable Alkaline-Earth Atoms
Physical Review Letters, 2001
Absolute Frequency Measurements of the ${Hg}^{+}$ and Ca Optical Clock Transitions with a Femtosecond Laser
Physical Review Letters, 2001
Direct Link between Microwave and Optical Frequencies with a 300 THz Femtosecond Laser Comb
Physical Review Letters, 2000
Magneto-Optical Trapping and Cooling of Strontium Atoms down to the Photon Recoil Temperature
Physical Review Letters, 1999
Cold collisions of ${Sr}^{*} - Sr$ in a magneto-optical trap
Physical Review A, 1999
Spectroscopy of the 689 nm intercombination line of strontium using an extended-cavity InGaP/InGaAIP diode laser
Applied Physics B Laser and Optics, 1992