LIGHT SHIFT IN A NEW CAVITY-CELL ASSEMBLY FOR RUBIDIUM ATOMIC FREQUENCY STANDARDS

Abstract

Abstract:

Based on a miniaturized microwave cavity developed by ourselves and the separated filter technique, a new type of cavity-cell assembly for gas cell rubidium frequency standards was made. The light shift characteristics of the assembly were studied, and the conditions for minimum light shift and temperature coefficient were determined. The operating temperature for minimum light shift was found to be 68 ℃ for the new assembly, 5～10 ℃ lower than that for the conventional systems. The light shift coefficient under the optimized conditions was
7.2×10^-12/10%. The light shift effect in the new assembly was independent on the parameters of the absorption cell, thus could be minimized by optimizing only the parameters of the filter cell so that the parameter optimizing process was greatly simplified.

Key words: rubidium atomic frequency standard, microwave cavity, cavity-cell assembly, light shift, temperature coefficient

CLC Number:

O455.1

XIA Bai-Hua, ZHONG Da, AN Shao-Feng, MEI Gang-Hua. LIGHT SHIFT IN A NEW CAVITY-CELL ASSEMBLY FOR RUBIDIUM ATOMIC FREQUENCY STANDARDS[J]. Chinese Journal of Magnetic Resonance, 2004, 21(1): 41-48.

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