Abstract
We have determined the wave number of the optical two-photon clock transition 6s[3/2]2–6s′[1/2]0 in xenon by interferometrically comparing the wavelengths of the 6s[3/2]2–6p′[1/2]1 (λ = 450 nm) and 6s′[1/2]0–6p′[1/2]1 (λ = 764 nm) transitions with an iodine-stabilized 633-nm He–Ne laser. These measurements determine the frequency of the two-photon transition [4564.610902(13) cm−1 for 132Xe] to better than 1 MHz and provide precise values for the isotope shifts and the hyperfine structures of these transitions.
© 1995 Optical Society of America
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