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Pump-probe differencing technique for cavity-enhanced, noise-canceling saturation laser spectroscopy

机译:用于腔增强,消除噪声的饱和激光光谱的泵浦探针差分技术

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摘要

We present an experimental technique that permits mechanical-noise-free, cavity-enhanced frequency measurements of an atomic transition and its hyperfine structure. We employ the 532-nm frequency-doubled output from a Nd:YAG laser and an iodine vapor cell. The cell is placed in a folded ring cavity (FRC) with counterpropagating pump and probe beams. The FRC is locked with the Pound-Drever-Hall technique. Mechanical noise is rejected by differencing the pump and probe signals. In addition, this differenced error signal provides a sensitive measure of differential nonlinearity within the FRC.
机译:我们提出了一种实验技术,允许对原子跃迁及其超精细结构进行无机械噪声,腔增强的频率测量。我们使用Nd:YAG激光器和碘蒸气电池的532 nm倍频输出。样品池放置在带有反向传播的泵浦光束和探测光束的折叠环形腔(FRC)中。 FRC通过Pound-Drever-Hall技术锁定。通过区别泵和探头信号可以消除机械噪声。此外,该差分误差信号提供了FRC内差分非线性的灵敏测量。

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