Hg+ trapped ion standard with the superconducting cavitymaser oscillator |
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| Authors: | Prestage J.D. Tjoelker R.L. Wang R.T. Dick G.J. Maleki L. |
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| Affiliation: | Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA; |
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| Abstract: | The frequency stability of an atomic standard based on 199 Hg+ ions confined in a hybrid RF/DC linear trap is described. The 40.5-GHz clock transition has been measured to be 17 mHz wide, representing a quality factor greater than 2×1012. A 160-mHz line is used to steer the output of a 5-MHz crystal oscillator to obtain a stability of 2×10-15 for 24000-s averaging times. In a separate measurement, a 37-mHz line is used to steer the output of the superconducting cavity maser oscillator to reach 1×10-15 stability at 10000 s |
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