| 摘要 |
PURPOSE:To reduce the cost of photomagnetic recording/reproducing device by using an analyzer using a polarized beam splitter having a <=10<-3> quenching ratio in place of an analyzer containing a Glan-Thompson prism made of an expensive calicite, etc. CONSTITUTION:An analyzer 10 having a <=10<-3> quenching ratio is applicable. The quenching ratios 10<-4>-10<-5> are obtained with a Glan-Thompson prisom, etc. applied generally to an analyzer; while a <=10<-3> quenching ratio is obtained with a polarizing beam splitter produced by a multi-layer coating process. Thus such a polarized beam splitter is available to an analyzer. |
