Time-Delay Interferometry in an Unequal-Arm Interferometer

A method of processing phase measurements in a large, unequal-arm laser Michelson interferometer makes it possible to measure phase effects much smaller than the laser phase noise. This method is related to the method reported in "Cancellation of Laser Noise in an Unequal-Arm Interferometer" (NPO-20611) NASA Tech Briefs, Vol 24, No. 3 (March 2000), page 22a.