Two-photon rubidium clock detecting 776~nm fluorescence

Abstract

The optical atomic clock based on the $5S_{1/2}\to 5D_{5/2}$ two-photon transition in rubidium is a candidate for a next generation, manufacturable, portable clock that fits in a small size, weight, and power (SWaP) envelope. Here, we report the first two-photon rubidium clock stabilized by detecting 776~nm fluorescence. We also demonstrate the use of a multi-pixel photon counter as a low voltage substitute to a photomultiplier tube in the feedback loop to the clock laser.

9 pages, 4 figures

References in corpus (7)

• Test of the Gravitational Redshift with Galileo Satellites in an Eccentric Orbit
• Relativistic many-body calculations of electric-dipole matrix elements, lifetimes and polarizabilities in rubidium
• High-performance, compact optical standard
• Lifetime measurements of the 5d states of rubidium
• Miniaturized optical frequency standard for next-generation portable optical clocks
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Cited by in corpus (1)

• Chip-integrated extended-cavity mode-locked laser in the visible