GRAVITATIONAL WAVE DETECTOR Russian patent published in 2013 - IPC G01V7/00 

FIELD: physics.

SUBSTANCE: invention relates to laser interferometer gravitational wave (GW) detectors and can be used to detect low-frequency periodic GW signals from double relativistic astrophysical objects. According to the invention, the GW detector has an active element with working medium, three totally reflecting mirrors, two semitransparent separating mirrors and a photodetector with a signal processing unit, which is the output of the GW detector. These components form two travelling wave optical resonators. The invention is characterised by that the optical resonators include polarisers and the second resonator includes additional three totally reflecting mirrors. The distance between components of the resonators is such that optical lengths of the resonators are equal, while providing mutually orthogonal polarisation of radiation thereof, and the angle between optical radiation incident on and reflected from the second semitransparent separating mirror is less than 45 degrees. The GW detector reacts to gravitational radiation only with a horizontal polarisation vector, parallel to three additional totally reflecting mirrors.

EFFECT: direction-finding of an astrophysical relativistic source of low frequency gravitational radiation can be provided.

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