Development of an Angular Displacement Measurement by Birefringence Heterodyne Interferometry

Content Provider	Scilit
Author	Chen, Lin-Yu Lee, Ju-Yi Chang, Hung-Sheng Yang, Yang
Copyright Year	2015
Description	The birefringence heterodyne interferometry for the angular measurement is presented. The advantage of the instrument is the large measurement range and high resolution. When p- and s-polarized beams pass through a birefringence crystal, the phase difference between these two polarized beams is sensitive to the incident angle. We can determine the angular variation with the heterodyne interferometer which can precisely detect the phase difference between these two polarized beams. Moreover, a new optical path is designed to enhance the sensitivity by means of a prism which combines the light to the birefringence crystal. There are two measurement modes in our system, a linear and a circular polarized mode. The experimental results show that the resolution of the linear polarized mode is $1.2°×10^{−4}$ and the resolution of the circular polarized mode is $3°×10^{−5}$.
Related Links	https://www.tandfonline.com/doi/pdf/10.1080/23080477.2015.11670490?needAccess=true
Ending Page	192
Page Count	5
Starting Page	188
e-ISSN	23080477
DOI	10.1080/23080477.2015.11670490
Journal	Smart Science
Issue Number	4
Volume Number	3
Language	English
Publisher	Informa UK Limited
Publisher Date	2015-01-11
Access Restriction	Open
Subject Keyword	Telecommunications Birefringence Heterodyne Interferometry Angle Measurement
Content Type	Text
Resource Type	Article