Frequency Stability of Maser Oscillators Operated with Enhanced Cavity Q

This paper presents an experimental study of the short term frequency stability of masers equipped with an external feedback loop to increase the cavity quality factor. The frequency stability of a hydrogen and a rubidium maser are measured and compared with theoretical evaluation. It is observed th...

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Hauptverfasser: Tetu, Michel, Tremblay, Pierre, Lesage, Paul, Petit, Pierre, Audoin, Claude
Format: Report
Sprache:eng
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Zusammenfassung:This paper presents an experimental study of the short term frequency stability of masers equipped with an external feedback loop to increase the cavity quality factor. The frequency stability of a hydrogen and a rubidium maser are measured and compared with theoretical evaluation. It is observed that the frequency stability passes through an optimum when the cavity Q is varied. Long term fluctuations are discussed and the optimum mid-term frequency stability achievable by small size active and passive H-masers is considered. Presented at the Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting (13th), held in Washington, DC on 1-3 December 1981 and published in proceedings of the same, p667-684. Prepared in cooperation with Universite de Paris-Sud, Orsay, France.