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

© 2003 Optical Society of America

Optical frequency metrology with an Rb-stabilized ring-cavity resonator—study of cavity-dispersion errors

Alok K. Singh, Lal Muanzuala, Atanu K. Mohanty, and Vasant Natarajan
J. Opt. Soc. Am. B 29(10) 2734-2740 (2012)

Precise measurements of atomic energy levels: D lines and fine-structure interval in K

Ayan Banerjee, Dipankar Das, and Vasant Natarajan
J. Opt. Soc. Am. B 21(1) 79-82 (2004)

Saturated-absorption spectroscopy: eliminating crossover resonances by use of copropagating beams

Ayan Banerjee and Vasant Natarajan
Opt. Lett. 28(20) 1912-1914 (2003)

Frequency locking of tunable diode lasers to a rubidium-stabilized ring-cavity resonator

Ayan Banerjee, Dipankar Das, Umakant D. Rapol, and Vasant Natarajan
Appl. Opt. 43(12) 2528-2531 (2004)

Precise laser frequency scanning using frequency-synthesized optical frequency sidebands: application to isotope shifts and hyperfine structure of mercury

M. D. Rayman, C. G. Aminoff, and J. L. Hall
J. Opt. Soc. Am. B 6(4) 539-549 (1989)