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arXiv · 2210.06059

A Cryogenic Sapphire Resonator Oscillator with 1e-16 mid-term fractional frequency stability

Christophe Fluhr·Benoit Dubois·Claudio E. Calosso·Francois Vernotte·Enrico Rubiola·Vincent Giordano
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Abstract

We report in this letter the outstanding frequency stability performances of an autonomous cryogenique sapphire oscillator presenting a flicker frequency noise floor below 2e-16 near 1,000 s of integration time and a long term Allan Deviation (ADEV) limited by a random walk process of 1e-18/sqr(tau). The frequency stability qualification at this level called for the implementation of sophisticated instrumentation associated with ultra-stable frequency references and ad hoq averaging and correlation methods.

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Christophe Fluhr, Benoit Dubois, Claudio E. Calosso, Francois Vernotte, Enrico Rubiola, Vincent Giordano. 2022-10-12. A Cryogenic Sapphire Resonator Oscillator with 1e-16 mid-term fractional frequency stability. https://doi.org/10.1063/5.0153711

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