A cryogenic open-cavity sapphire reference oscillator with low spurious mode density

被引:15
作者
Bourgeois, PY
Kersalé, Y
Bazin, N
Chaubet, M
Giordano, V
机构
[1] Inst FEMTO ST, UMR 6174, Dept Lab Phys & Metrol Oscillateurs, F-25044 Besancon, France
[2] Ctr Natl Etud Spatiales, F-31401 Toulouse 9, France
关键词
D O I
10.1109/TUFFC.2004.1350950
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
In this paper, we describe the implementation of a microwave cryogenic sapphire oscillator (CSO) at the Laboratoire de Physique et Metrologie des Oscillateurs. In our realization we solved the problem of the spurious modes by operating the sapphire resonator in an open cavity. The CSO compared to a hydrogen maser demonstrates a frequency stability better than 3 x 10(-14) at short term. Its long-term frequency instability of the order of 3 x 10(-12)/day is limited by a random walk process. A first attempt to use this reference oscillator to characterize other signal sources is presented.
引用
收藏
页码:1232 / 1239
页数:8
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