Self-Mixing Interferometer Based on Frequency Analysis Method for Accurate Refractive Index Measurement

被引：14

作者：

Zhang, Yongbing ^{[1
]}

Wei, Yingbin ^{[1
]}

Chen, Chenxi ^{[1
]}

Huang, Wencai ^{[1
]}

Wang, Xiulin ^{[2
]}

Xu, Huizhen ^{[2
]}

机构：

[1] Xiamen Univ, Dept Elect Engn, Xiamen 361005, Peoples R China

[2] Jimei Univ, Dept Phys, Xiamen 361021, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2016年 / 8卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Self-mixing interference (SMI); refractive index; frequency; SOLID-STATE LASER; FEEDBACK; INTERFERENCE; LINEWIDTH;

D O I：

10.1109/JPHOT.2016.2520822

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new method based on self-mixing interference (SMI) for refractive index measurement by means of simply frequency analysis is proposed. The optical phase shift is implemented by translating a transparent object through a motorized stage with a setting velocity. Then, the refractive index is determined by the frequency of SMI fringes. A relative repeatability of refractive index estimated in 1.0 x 10(-4) is achieved experimentally. This method has found that there exists an optimal velocity to achieve minimum error of refractive index measurement.

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