| 摘要 |
<p>Optical analytical method based on analysis of interference pattern produced by light bundles that have passed through test medium. <??>Optical analytical method comprises first dividing a light beam (L) with a beam splitter into several light bundles (L1-L3), so that a phase velocity of at least one bundle is affected, by the medium, during passage through a medium. The light bundles are then superimposed in the region of a detector. The new feature is local frequency analysis of the characteristic, line-shaped interference pattern produced by the superimposition. <??>An Independent claim is also included for an optical detection apparatus for the process.</p> |
