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

Abstract

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.

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

References in corpus (1)

• High-accuracy wavemeter based on a stabilized diode laser

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• Rubidium Isotope Shift Measurement using Noisy Lasers
• Optical frequency metrology with a Rb-stabilized ring-cavity resonator -- Study of cavity-dispersion errors
• Accessing the $5{\mathrm{S}}_{1/2}\to 5{\mathrm{D}}_{5/2}$ two-photon transition in Rb using a diode laser system