We demonstrate laser interferometry based on phase difference between the two arms of an interferometer. The experiments are done with a Cs atomic vapor cell at room temperature and use atomic coherence. The interference can be tuned from constructive to destructive by tuning the relative phase between the two arms. It is similar to the Michelson interferometer, but differs in the important aspect of allowing interference when the polarizations in the two arms are orthogonal. This would be a novel method for interfering two independent lasers, which can even allow interfering two independent lasers of completely different wavelengths.

中文翻译：

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基于原子相干性的激光干涉测量

我们展示了基于干涉仪两个臂之间相位差的激光干涉测量。实验是在室温下使用 Cs 原子蒸气室完成的，并使用原子相干性。通过调整两个臂之间的相对相位，可以将干扰从建设性调整为破坏性。它类似于迈克尔逊干涉仪，但在两个臂中的偏振正交时允许干涉的重要方面有所不同。这将是一种干涉两个独立激光器的新方法，它甚至可以允许干涉两个完全不同波长的独立激光器。