Gravitational wave detecting device

Abstract

The present invention is gravitational wave detector, and belongs to the field of optical measurement technology. The gravitational wave signal is amplified by means of resonant effect and prolonging optical path, to raise the gravitational wave detecting sensitivity. The present invention has two independent resonant rods suspended with string horizontally with the axial lines perpendicular to each other; two optical fibers, each of which is folded into 1,000-1,000,000 sections and axially wound around or set inside the resonant rod, with the optical fibers on two resonant rods being connected via optical devices to constitute one closed loop. The resonant rods with the optical fibers serve as the resonant mass to amplify the gravitational wave signal by Q times by means of the resonant effect; and the folded fiber increases the optical path greatly to strengthen the gravitational wave detecting capacity, resulting in greatly raised detection sensitivity.

Description

technical field [0001] The invention belongs to the technical field of light measurement. Background technique [0002] Gravitational waves are a phenomenon predicted by the general theory of relativity to propagate fluctuations in the curvature of space-time. Since the source of gravitational waves is very far away from the solar system, the gravitational waves projected to the earth are generally extremely weak. The direct detection of gravitational waves is very difficult experimentally: the weak object to be measured places high requirements on the sensitivity of the detection instrument. So far there is no direct evidence of gravitational waves being observed. Two types of detectors have been built to detect gravitational waves, resonant mass detectors and laser interferometer detectors. [0003] Resonant mass detectors use the resonance between resonant mass and gravitational waves to detect gravitational waves, literature M.Bassan Resonant gravitational wave detect...

AI Technical Summary

Problems solved by technology

The disadvantage is: due to the resonance effect, it only has the best detection sensitivity for the resonance frequency. At the same time, the resonance effect makes the length of the resonant rod limited, and the length of the resonant rod can only be half of the wavelength of the sound wave.

The disadvantage is that it has no resonant mass as a carrier, so it does not use the resonance effect to amplify the gravitational wave signal. In addition, the back and forth folding of the optical path requires a high power of the laser light source, and the large size of the whole device also affects the stability of the system.

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