NOT KNOWN FACTUAL STATEMENTS ABOUT MAGNETO-OPTICAL CRYSTAL

各向异性透明晶体如方解石、石英等的折射率，是其固有的特性，称为永久双折射。If the electric field has the course on the optical axis, a single obtains the amazing index ne. This is possible only if the propagation path (much more specifically, the path from the k vector) is perpendicular for the optical axis. For