Laser-pumped double-resonance clock using a micro-fabricated cell

In view of a novel miniature atomic clock with low power consumption, we investigate on the potential for a laser-pumped double-resonance atomic clock based on a micro-fabricated Rb vapor cell. We obtain a clock short-term stability of 2×10^-11 τ^-1/2 and the stability stays below 1×10^-11 up to τ = 10⁴s, which demonstrates the feasibility of the approach.