A novel absorption resonance for all-optical atomic clocks

Abstract

We report an experimental study of an all-optical three-photon-absorption resonance (known as a "N-resonance") and discuss its potential application as an alternative to atomic clocks based on coherent population trapping (CPT). We present measurements of the N-resonance contrast, width and light-shift for the D1 line of 87Rb with varying buffer gases, and find good agreement with an analytical model of this novel resonance. The results suggest that N-resonances are promising for atomic clock applications.

4 pages, 6 figures

References in corpus (1)

• Theory of dark resonances for alkali vapors in a buffer-gas cell

Cited by in corpus (7)

• Coherent population trapping resonances with linearly polarized light for all-optical miniature atomic clocks
• Detection of ultra-high resonance contrast in vapor cell atomic clocks
• Cancellation of light-shifts in an N-resonance clock
• Comparison of 87Rb N-resonances for D1 and D2 transitions
• Sub-natural $N$-type Resonance in Cesium Atomic Vapor: splitting in magnetic fields
• Lineshape Asymmetry for joint CPT and three photon N resonances
• Observation of polarization quantum noise of laser radiation in Rb vapor cell