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首页> 外文期刊>Measurement Science & Technology >A homodyne Michelson interferometer with sub-picometer resolution
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A homodyne Michelson interferometer with sub-picometer resolution

机译：具有亚皮秒分辨率的零差迈克尔逊干涉仪

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摘要

A homodyne interferometer which exploits a multiple reflection arrangement between two quasi parallel mirrors to deliver a multiplication factor is presented. The relative displacement of the two mirrors causes a more than 100-fold increment of the optical path, which is measured by the optoelectronic circuitry. This leads to a proportional reduction of the errors associated with the subdivision of the optical fringes, with the effect of fringe nonlinearities, and with the opto-electronic noise. In particular the reduction of the electronic noise limit to the level of 20 fm Hz~(-1/2) has been demonstrated. The exact formula of the gain has been calculated and confirmed experimentally.
机译：提出了一种零差干涉仪，其利用两个准平行镜之间的多重反射布置来提供倍增因子。两个反射镜的相对位移导致光路增加了100倍以上，这是由光电电路测得的。这导致与光学条纹的细分，条纹非线性的影响以及光电噪声相关的误差按比例减小。特别地，已经证明了将电子噪声极限减小到20fm Hz〜（-1/2）的水平。增益的精确公式已通过实验计算并确认。

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