Study of lin||lin CPT for application in vapour cell atomic clocks
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We evaluate the use of Coherent Population Trapping (CPT) excited with parallely polarized laser fields in vapour cell atomic clocks. We study the resonance shape, the discriminator slope and signal-to-noise ratio as a function of relevant parameters such as the laser frequency detuning and the applied magnetic field. We show that a stability of $6 \cdot 10^{-12}$ $τ^{-1/2}$ may be reached in a compact system using a modulated VCSEL.
9 pages, 5 figures, submitted
9 pages, 5 figures, submitted