Cryogenic sapphire oscillator with exceptionally high long-term frequency stability

John Hartnett, Clayton Locke, Eugene Ivanov, Michael Tobar, Paul Stanwix

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

The authors report on the development of a sapphire cryogenic microwave resonator oscillator with long-term fractional frequency stability of 2x10(-17)root tau for integration times tau>10(3) s and a negative drift of about 2.2x10(-15)/day. The short-term frequency instability of the oscillator is highly reproducible and also state of the art: 5.6x10(-16) for an integration time of tau approximate to 20 s. (c) 2006 American Institute of Physics.
Original languageEnglish
Pages (from-to)203513 (3)
JournalApplied Physics Letters
Volume89
Issue number20
DOIs
Publication statusPublished - 2006

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