Active laser ranging with frequency transfer using frequency comb

Active laser ranging with frequency transfer using frequency comb
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使用频率梳进行频率传输的主动激光测距

DOI:
10.1063/1.4948593
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发表时间:
2016-05
影响因子:
4
通讯作者:
Li Yan
Li Yan
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang Hongyuan;Wei Haoyun;Yang Honglei;Li Yan

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为了提高距离分辨率和整个系统的通用时间标准,提出了一种基于梳状的主动激光测距方案。在测量距离的两端使用三个不同重复频率的频率梳作为光源。脉冲位置通过异步光学采样和第二类二次谐波产生来确定。结果表明,该系统的最大残差为379.6 nm,标准偏差为92.9 nm,2 0 0 0年平均频率为2 3.6 m。此外,在频率转换方面,采用与原子钟同步的原子钟和可调信号发生器作为两端的时间标准来评价系统引入的频偏。该系统实现了1 × 10−16对1 S的剩余分数偏差,从而实现了两端两个时钟之间的精确频率转移。
A comb-based active laser ranging scheme is proposed for enhanced distance resolution and a common time standard for the entire system. Three frequency combs with different repetition rates are used as light sources at the two ends where the distance is measured. Pulse positions are determined through asynchronous optical sampling and type II second harmonic generation. Results show that the system achieves a maximum residual of 379.6 nm and a standard deviation of 92.9 nm with 2000 averages over 23.6 m. Moreover, as for the frequency transfer, an atom clock and an adjustable signal generator, synchronized to the atom clock, are used as time standards for the two ends to appraise the frequency deviation introduced by the proposed system. The system achieves a residual fractional deviation of 1.3 × 10−16 for 1 s, allowing precise frequency transfer between the two clocks at the two ends.
DOI: 10.1364/ao.52.002042
发表时间: 2013-04
期刊: Applied optics
影响因子: 1.9
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