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High-contrast dark resonances in s+ -s- optical field



S. Kargapoltsev, John Kitching, Leo W. Hollberg, A. V. Taichenachev, V L. Velichanski, V. I. Yudin


For application to atomics clocks, it is important to have large amplitude and small width of the CPT resonance. In this paper, we show that the contrast and amplitude of the dark resonance can be significantly increased in a miniature buffer gas cell by the use of a sigma +-sigma d- field configuration and excitation of Dl line of alkali-metal atoms. First experiments carried out with Cs vapor confmn the theoretical predictions and show that the contrast of the resonance in the CPT-based chip-scale atomic clock can be greatly increased with only minor design modifications of the device.
Laser Physics Letters


atomic clock, chip-scale, coherent population trapping, compact, frequency reference, MEMS, micromachining


Kargapoltsev, S. , Kitching, J. , Hollberg, L. , Taichenachev, A. , Velichanski, V. and Yudin, V. (2004), High-contrast dark resonances in s+ -s- optical field, Laser Physics Letters, [online], (Accessed June 21, 2024)


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Created September 30, 2004, Updated October 12, 2021