REFLECTION TYPE MAGNETO-OPTIC SENSOR HEAD

摘要

A reflection type magnetooptic sensor head having a light inputting/outputting path, polarizer, Faraday rotator, and reflecting film which are aligned in order. The Faraday rotator is made of a plurality of (111) bismuth-substituted iron garnet single crystals, which are selected from (111) bismuth-substituted iron garnet single crystals having a [111] axis at an angle in the range of 1-60 degrees with an axis normal to the film surface and (111) bismuth-substituted iron garnet single crystals having a [111] axis substantially in line with an axis normal to the film surface.