Title :
Unprecedented long-term frequency stability with a microwave resonator oscillator
Author :
Grop, S.G. ; Schafer, W.S. ; Bourgeois, P. ; Kersale, Y.K. ; Oxborrow, M. ; Rubiola, Enrico ; Giordano, V.
Author_Institution :
Time & Freq. Dept., Univ. de Franche-Comte, Besancon, France
fDate :
8/1/2011 12:00:00 AM
Abstract :
This article reports on the long-term frequency stability characterization of a new type of cryogenic sapphire oscillator using an autonomous pulse-tube cryocooler as its cold source. This new design enables a relative frequency stability of better than 4.5 × 10-15 over one day of integration. To the best of our knowledge, this represents the best long-term frequency stability ever obtained with a signal source based on a macroscopic resonator.
Keywords :
cryogenics; frequency stability; microwave oscillators; microwave resonators; microwave tubes; sapphire; autonomous pulse-tube cryocooler; cryogenic sapphire oscillator; frequency stability; macroscopic resonator; microwave resonator oscillator; Frequency synthesizers; Laser stability; Oscillators; Resonant frequency; Thermal stability; Time frequency analysis;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2011.1998
