Precise frequency measurements of atomic transitions using a Rb-stabilized resonator

Details Precise frequency measurements of atomic transitions using a Rb-stabilized resonator Precise frequency measurements of atomic transitions using a Rb-stabilized resonator

2003-07-18

arxiv.org/abs/physics/0307094v1

Optics Letters, vol. 28 (17), pp. 1579-1581 (2003)

Physics

Atomic Physics

3 pages, 3 figures. To appear in Optics Letters, September 1, 2003 issue

Scientific paper

10.1364/OL.28.001579

We demonstrate a technique for frequency measurements of atomic transitions with a precision of 30 kHz. The frequency is measured using a ring-cavity resonator whose length is calibrated against a reference laser locked to the $D_2$ line of $^{87}$Rb, the frequency of which is known to 10 kHz. We have used this to measure the hyperfine structure in the $5P_{3/2}$ state of $^{85}$Rb. We obtain precise values for the hyperfine constants $A=25.041(6)$ MHz and $B=26.013(25)$ MHz, and a value of 77.992(20) MHz for the isotope shift in the $D_2$ line.

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