优化的振动不敏感球形参考腔  

An Improved Vibration-Insensitive Spherical Optical Cavity

作　　者：任立庆[1] 许冠军[2,3] 王兆华[1] 刘孝丽 李凡 邓仲勋[1] 李小龙[1] 李增生[1] 刘涛[2,3] 

机构地区：[1]榆林学院,能源与工程学院,陕西榆林 [2]中国科学院国家授时中心,陕西西安 [3]中国科学院时间频率基准重点实验室,陕西西安

出　　处：《现代物理》2018年第2期35-41,共7页Modern Physics

基　　金：陕西省科学技术研究发展计划项目(批准号:2014K05-11)资助。

摘　　要：利用有限元分析方法提出了四点对称支撑的具有较低振动敏感度的球形参考腔模型。有限元分析表明,通过改变参考腔的支撑位置和支撑面积振动敏感度是可调的,而且可以获得振动敏感度的零交叉点。当考虑加工精度和误差时,切割参考腔振动敏感度的零交叉点仍然可得。这种参考腔模型对于实验室环境中腔稳激光的研究具有重要的参考价值。In this study, we present a four-point horizontally supported spherical reference cavity of relatively low vibration sensitivity by using finite element analysis (FEA). We show that the vibration sensitivity is tunable by changing the support positions and contact areas. We also show that a zero crossing of the vibration sensitivity can be achieved for the proposed optical cavity. More important is that the zero crossing is still achievable once the cavity has been machined, taking into account tolerances in manufacturing and errors in the FEA simulations. The proposed cavity can also be designed as a two-dimensional squeezed portable cavity, which might find potential application for a non-laboratory cavity-stabilized laser.

关 键 词：参考腔 振动敏感度 光钟 

分 类 号：G6[文化科学—教育学]