Space laser interferometer gravitational wave detector design based on TRIZ and method thereof

• Main Authors: WU SHOUYU, WU JIAPENG, ZHANG YUHONG
• Format: Patent
• Language: English
• Published: 14.01.2015
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The invention discloses a space laser interferometer gravitational wave detector and a technology development path. The space laser interferometer gravitational wave detector is designed according to TRIZ and the optical interferometry principle. According to the structure and the work principle of the space laser interferometer gravitational wave detector, three detectors consist an equilateral triangle constellation, the length of the edge of the equilateral triangle constellation ranges from 103 kilometers to 109 kilometers, the center of the constellation moves on the earth orbit and falls behind the earth by 20 degrees, and the included angle between the plane of the constellation and the ecliptic plane is 60 degrees. Each spacecraft is provided with two completely identical optical tables, optical devices and electronic devices, wherein the optical devices comprise a laser source, an optical beam splitter, a photodetector, an optical lens group and the like and form an interferometer, the electronic devices conduct digital signal processing. Interference is generated between each optical table of each spacecraft and the optical tables of the adjacent spacecraft. If a gravitational wave sweeps test mass, the micro change of the position of the test mass will causes the change of an interference signal, namely the change of a laser phase, and then whether an observed gravitational wave exists or not can be derived according to the change of the phase.