A lunar laser interferometer for the detection of gravitational waves near 1 Hz
Abstract
In order to implement the detection of gravitational wave (GW)in 1 mHz–10 Hz frequency band,we design a lunar Michelson-type laser interferometerthat requires only the multiple reflections of the mirror surface. The operational complex Fabry-Perot cavity techniques, which are usually required to effectivelyincreases the length of two arms of the interferometer, is thus unnecessary.Considering two main noise resources, i.e., the laser power fluctuation and mirror radiation pressure noise, the achievable detection sensitivity of the designed lunarlaser interferometer gravitational waves detector system,with the arm length being 100 km, can be estimated as∼ 10^-21/ sqrt<roman>Hz</roman>for ωg∼ 1 Hz. Analogously, the corresponding detectionsensitivity of the rippled amplitude in spacetime is ∼ 10^-15rm m
