Physical Review a
We present a joint theoretical and experimental characterization of the coherent population trapping (CPT) resonance excited on the D(1) line of (87)Rb atoms by bichromatic linearly polarized laser light. We observe high-contrast transmission resonances (up to approximate to 25%), which makes this excitation scheme promising forminiature all-optical atomic clock applications. We also demonstrate cancellation of the first-order light shift by proper choice of the frequencies and relative intensities of the two laser-field components. Our theoretical predictions are in good agreement with the experimental results.
Zibrov, S. A., Novikova, I., Phillips, D. F., Walsworth, R. L., Zibrov, A. S., Velichansky, V. L., ... & Yudin, V. I. (2010). Coherent-population-trapping resonances with linearly polarized light for all-optical miniature atomic clocks. Physical Review A, 81(1), 013833.