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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Long-term operation and performance of cryogenic sapphire oscillators
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Long-term operation and performance of cryogenic sapphire oscillators

机译：低温蓝宝石振荡器的长期运行和性能

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摘要

Cryogenic sapphire oscillators (CSO) developed at the University of Western Australia (UWA) have now been in operation around the world continuously for many years. Such oscillators, due to their excellent spectral purity are essential for interrogating atomic frequency standards at the limit of quantum projection noise; otherwise aliasing effects will dominate the frequency stability due to the periodic sampling between successive interrogations of the atomic transition. Other applications, which have attracted attention in recent years, include tests on fundamental principles of physics, such as tests of Lorentz invariance. This paper reports on the long-term operation and performance of such oscillators. We compare the long-term drift of some different CSOs. The drift rates turn out to be linear over many years and in the same direction. However, the magnitude seems to vary by more than one order of magnitude between the oscillators, ranging from 1014 per day to a few parts in 1013 per day
机译：西澳大利亚大学（UWA）开发的低温蓝宝石振荡器（CSO）现已在世界各地连续运行了很多年。这种振荡器由于其出色的频谱纯度，对于在量子投影噪声极限下询问原子频率标准至关重要。否则，由于连续两次询问原子跃迁之间的周期性采样，混叠效应将主导频率稳定性。近年来引起关注的其他应用包括对物理基本原理的测试，例如洛伦兹不变性测试。本文报告了这种振荡器的长期运行和性能。我们比较了一些不同公民社会组织的长期漂移。事实证明，多年来，漂移率是线性的，并且方向相同。但是，震荡器之间的幅值似乎相差一个数量级以上，范围从每天1014到每天1013的几分之一

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