Immersion-type KTP sensor for angular displacement measurement

被引：6

作者：

Twu, Ruey-Ching ^{[1
]}

Yan, Nina-Yang ^{[1
]}

机构：

[1] Southern Taiwan Univ Sci & Technol, Dept Electroopt Engn, 1 Nan Tai St, Tainan 71005, Taiwan

来源：

OPTICS AND LASER TECHNOLOGY | 2019年 / 120卷

关键词：

Optical angle sensor; Birefringent materials; Homodyne interferometer; SMALL-ANGLE MEASUREMENT; PHASE INTERROGATION;

D O I：

10.1016/j.optlastec.2019.105690

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An immersion-type potassium titanyl phosphate (KTP) optical angle sensor (OAS) was proposed for angular displacement measurement in a homodyne interferometer. The KTP plate was attached on a precise rotational stage and then immersed in a glass square cell filled with liquid. A reliability comparison of the immersion glycerin and grapeseed oil was studied under different angle ranges and environmental conditions. Compared with glycerin, grapeseed oil was found to have better stability in providing enough reliability for practical usage in a general environment. At a dynamic angle range of 10 degrees, the best linearity of 0.9998 and a resolution of 2.12 x 10(-4)degrees was achievable.

引用

页数：6

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