A simple, low cost and robust method for measurement of the zero-crossing temperature of an ultralow expansion cavity
A simple, low cost and robust method for measurement of the zero-crossing temperature of an ultralow expansion cavity
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一种简单、低成本且稳健的超低膨胀腔过零温度测量方法
DOI：
10.1088/1361-6463/ab36f5
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Jia Suotang
中科院分区：
文献类型：
--
作者：
Wang Chenhao;Ji Zhonghua;Gong Ting;Su Dianqiang;Zhao Yanting;Xiao Liantuan;Jia Suotang
We present a simple, low cost and robust method to measure zero-crossing temperature (ZCT) of an ultralow expansion (ULE) cavity. Low cost fiber electro-optic modulator (EOM) and free space EOM as a frequency bridge and a frequency ruler respectively are used to precisely measure the frequency of cavity mode relative to atom transition which acts as an absolute reference frequency. Neither an expensive optical frequency comb and another ULE cavity-based stabilized laser for reference frequency, nor Pound–Drever–Hall locking system for coupling laser is required, but still allows easily using data acquisition card to record abundant data of cavity mode frequency in short term. Using our presented method, the ZCT fitting error can reach 0.01 C and the total uncertainty can reach 0.22 C, meaning that our presented method is accuracy and reliable.
