Two-color rubidium fiber frequency standard

C. Perrella (1, 2) , P.S. Light (1, 2) , J.D. Anstie (1, 2) , F. Baynes (2) , Fetah A. Benabid (3) , Andre N. Luiten (1, 2)

1 University of Adelaide
2 UWA - The University of Western Australia
3 XLIM-PHOTONIQUE - PHOTONIQUE

We demonstrate an optical frequency standard based on rubidium vapor loaded within a hollow-core photonic crystal fiber. We use the S1/25→D5/25 two-photon transition, excited with two lasers at 780 and 776 nm. The sum-frequency of these lasers is stabilized to this transition using modulation transfer spectroscopy, demonstrating a fractional frequency stability of 9.8×10−12 at 1 s. The current performance limitations are presented, along with a path to improving the performance by an order of magnitude. This technique will deliver a compact, robust standard with potential applications in commercial and industrial environments.

Domaines: Sciences de l'ingénieur [physics]; Optique / photonique

C. Perrella, P.S. Light, J.D. Anstie, F. Baynes, Fetah A. Benabid, et al.. Two-color rubidium fiber frequency standard. Optics Letters, 2013, 38 (12), pp.2122. ⟨hal-00924666⟩