Cancellation of light-shifts in an N-resonance clock

Abstract

We demonstrate that first-order light-shifts can be cancelled for an all-optical, three-photon-absorption resonance ("N-resonance") on the D1 transition of Rb87. This light-shift cancellation enables improved frequency stability for an N-resonance clock. For example, using a table-top apparatus designed for N-resonance spectroscopy, we measured a short-term fractional frequency stability (Allan deviation) 1.5e-11 tau^(-1/2) for observation times 1s< tau < 50s. Further improvements in frequency stability should be possible with an apparatus designed as a dedicated N-resonance clock.

arXiv comment4 pages, 4 figures

References in corpus (1)

• A novel absorption resonance for all-optical atomic clocks

Cited by in corpus (6)

• Coherent population trapping resonances with linearly polarized light for all-optical miniature atomic clocks
• Performance of a prototype atomic clock based on lin||lin coherent population trapping resonances in Rb atomic vapor
• Comparison of 87Rb N-resonances for D1 and D2 transitions
• N -resonances in a buffered micrometric Rb cell: splitting in a strong magnetic field
• Sub-natural $N$-type Resonance in Cesium Atomic Vapor: splitting in magnetic fields
• Lineshape Asymmetry for joint CPT and three photon N resonances