Accuracy of an Atomic Microwave Power Standard

Details Accuracy of an Atomic Microwave Power Standard Accuracy of an Atomic Microwave Power Standard

2005-03-14

arxiv.org/abs/physics/0503111v3

IEEE Trans. Instrum. Meas., Vol. 54, No. 2, April 2005, pp.692-5

Physics

Atomic Physics

5 figures

Scientific paper

We have built an atomic microwave power standard based on the electromagnetic interaction with laser-cooled atoms. The atoms traversed a waveguide transmission line, and under the effect of the radiation, the internal state populations underwent a Rabi flopping oscillation. Measurement of the oscillation frequency allowed the determination of the incident microwave power. As many of 60 oscillations were observed over a dynamic range of 20 dB and the standard deviation of the measurements was about 0.02%. The measured frequency was compared to a calculated one and an agreement of 1.3% with an uncertainty of 5% (rectangular) was found.

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