Spatial positioning measurements up to 150 m using temporal coherence of optical frequency comb Original Research Article
Spatial positioning measurements up to 150 m using temporal coherence of optical frequency comb Original Research Article
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使用光学频率梳的时间相干性进行长达 150 m 的空间定位测量 原始研究文章
DOI：
10.1016/j.precisioneng.2013.01.008
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Hirokazu Matsumoto
中科院分区：
文献类型：
--
作者：
Xiaonan Wang;Satoru Takahashi;Kiyoshi Takamasu;Hirokazu Matsumoto
本文介绍了一种利用光频梳的外差干涉空间定位测量系统，并应用于152.85米的远距离测量。激光源是一个Rb稳定的光频梳，时间相干干涉发生在离散的空间位置，其中两个光梳脉冲串在不同的臂重叠。压电换能器扫描以找到与该位置相对应的干涉条纹包络的峰值。绝对位置的测量是通过将光梳的频率偏移100.1MHz来实现的。实验结果表明，在152.85m范围内，测量重复性不超过1.4μm，在50.951m范围内，测量精度为1.1μm。
A heterodyne interference system using an optical frequency comb has been developed for spatial positioning measurements and applied to long distances up to 152.85m. The laser source is a Rb-stabilized optical-frequency comb, and temporal coherence interference occurs at discrete spatial positions, where two optical comb pulse trains in the different arms overlap. A piezoelectric transducer scans to find the peak of the interference fringe envelope corresponding to the position. The measurement of the absolute position is accomplished by shifting the frequencies of the optical comb by 100.1MHz. The experimental results show that the measurement reproducibility is no more than 1.4μm for distances up to 152.85m and that the accuracy is 1.1μm for a distance of 50.951m.