| 摘要 |
<p>An interferometer apparatus comprises an optical delay section including a light input, a light output, at least two beam splitters disposed in an optical path between the light input and the light output and arranged to provide at least three optical path lengths to the light traversing the optical delay apparatus. An interferometric method comprises directing a beam of measuring light into an optical cavity such that a first portion of the beam of measuring light interacts with an optical element and such that a second portion of the beam of measuring light bypasses the optical element.</p> |
