Basic principles of ultra-stable lasers and Pound-Drever-Hall ( PDH ) method are introduced. Additionally, methods of reducing noises, such as noises from vibration, temperature perturbation, air turbulence and etc. are discussed. The applications of ultra-stable lasers, especially the application of ultra-stable lasers to achieve the ultra-stable microwave source are described. Finally, an ultra-stable laser system with parameters for an ultra-stable microwave source is presented.%介绍了实现超稳激光和Pound-Drever-Hall (PDH)稳频系统的基本原理,并就削减振动、温度、空气扰动等方面噪声的主要方法进行了讨论.此外,概述了超稳激光的主要应用,介绍了通过超稳激光实现超稳微波源的应用,并提出为实现超稳微波源而自行设计的超稳激光方案和系统设计参数.
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