Polarized beam, matched coincident beam path, interferometric gradiometer apparatus and method

A gravity gradient is measured interferometrically from two polarized light beams having mutually different polarization planes which reflect from opposite surfaces of two freefalling test masses. The two polarized light beams project along matched coincident beam paths and divert from the coinciden...

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Bibliographic Details
Main Authors NIEBAUER TIMOTHY M, KLOPPING FRED J, BILLSON RYAN M
Format Patent
LanguageEnglish
Published 18.08.2015
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:A gravity gradient is measured interferometrically from two polarized light beams having mutually different polarization planes which reflect from opposite surfaces of two freefalling test masses. The two polarized light beams project along matched coincident beam paths and divert from the coincident paths to interact with the freefalling test masses. An enhanced level of common mode rejection of adverse influences arises from traversing the coincident beam paths.
Bibliography:Application Number: US201313797451