We report the absolute frequency measurements of rubidium 5S–7S two-photon transitions with a cw laser digitally locked to an atomic transition and referenced to an optical frequency comb. The narrow, two-photon transition, 5S–7S (760 nm), insensitive to first-order in a magnetic field, is a promising candidate for frequency reference. The performed tests yielded more accurate transition frequencies than previously reported.
© 2013 Optical Society of America
Instrumentation, Measurement, and Metrology
Original Manuscript: August 27, 2013
Revised Manuscript: October 3, 2013
Manuscript Accepted: October 3, 2013
Published: November 5, 2013
Piotr Morzyński, Piotr Wcisło, Piotr Ablewski, Rafał Gartman, Wojciech Gawlik, Piotr Masłowski, Bartłomiej Nagórny, Filip Ozimek, Czesław Radzewicz, Marcin Witkowski, Roman Ciuryło, and Michał Zawada, "Absolute frequency measurement of rubidium 5S–7S two-photon transitions," Opt. Lett. 38, 4581-4584 (2013)