A digital phasemeter for precision length measurements

Malcolm B Gray,Terry G Mcrae,Magnus T L Hsu,Jan Herrmann,Daniel A Shaddock

Lasers and Electro-Optics（2012）

Cited 23|Views8

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Abstract

We report on a digital phasemeter for application in precision length measurement using laser interferometry. Our interferometer demonstrates a length sensitivity of 0.5 pm/√Hz above 5 Hz, and a cyclic error of better than 50 pm.

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Key words

length measurement,light interferometry,measurement by laser beam,measurement errors,cyclic error,digital phasemeter,laser interferometry,length sensitivity,precision length measurements,interferometry,optical interferometry,optical filters,sensitivity

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