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Abstract

The background blackbody radiation causes the shift of the hyperfine energy level and affects the accuracy of the optical frequency standard. The polarizabilities of the hyperfine energy levels 5d106s2S1/2 (F=0) and 5d96s2 2D5/2 (F=2) of 199Hg+ are evaluated and the relative frequency shift at room temperature due to blackboby radiation is calculated to be -5.410-17. Finally the effect of blackbody radiation on single 199Hg+ optical frequency standard is discussed at an ultralow temperature.

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Funds:Project supported by the National Natural Science Foundation of China (Grant No. 10904174) and Hunan Provincial Natural Science Foundation of China (Grant No. 11JJ2004).

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Vol. 61, Issue 10 - 2012-05-20

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