液晶偏光変調器を用いた旋光計測装置の開発

摘要

A measurement of the optical rotation is the means to evaluate the optical characteristics of the saccharide and amino acid for a long time. Some principles of optical rotation measurement techniques are proposed by a rotating polarizer method, a Farady cell method and an optical heterodyne method. However, these measurement methods have a disadvantage of a large sized caused by these operational parts, and these systems are complicate. The purpose of this research is to develop the azimuthal polarimeter that consists of liquid crystal polarized modulator. A nematic liquid crystal behaves as a variable retarder by controlling the applied voltage. The liquid crystal polarized modulator made of two types of nematic liquid crystal is powerful tool with some superior characteristics, miniature, high speed drive, and low consumption electricity. Three quartz control plates and saccharose were used as samples for the evaluation of the proposal method, and the result correspond with theoretical values.