In a traditional laser interferometer, light from a laser source is split into two beams, one of which is directed to the test surface and the other to a high-quality reference. The light ...
On September 14, 2015, for the first time ever, the Laser-Interferometer Gravitational-Wave Observatory (LIGO) detected a ripple in spacetime. This breakthrough moment—one Albert Einstein once ...
Larger interferometers like the proposed space-based Laser Interferometer Space Antenna (LISA) are better because they have better sensitivity in the lower frequency bands where typical memory ...