Computer Science – Performance
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.340..515m&link_type=abstract
In ESA, Frequency and Time Forum p 515-519 (SEE N93-24978 09-70)
Computer Science
Performance
1
Frequency Shift, Frequency Standards, Inhomogeneity, Microwave Resonance, Resonators, Rubidium, C Band, Experimentation, Miniaturization, Quantum Mechanics
Scientific paper
The role of the line inhomogeneity in determining the overall performances of a compact rubidium frequency standard is analyzed. The possibility of zero power shift operation is discussed and the effects of the main physical parameters of the standards on this particular operation mode is investigated experimentally. The power shift varies as function of the cell temperature, but only very little with the light intensity. Light attenuation and filtering appears as the main cause. Different C field gradients show variations in the power shift which was predominantly positive in all cases. It was possible to find a C field configuration, and a working point, in which, in addition to zero temperature coefficient, and zero light shift, the power shift is reduced to less than 3 times 10 to the minus 12th power/micro W. This performance was possible at very low operating RF power, less than 0.5 microW, due to an improved microwave structure.
Mileti Gaetano
Rueedi I.
Schweda H.
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