Share Email Print

Optical Engineering • Open Access

Birefringence measurement by four-step phase-shifting method on triple-polarizer plane polariscope

Paper Abstract

A new four-step phase-shifting method for birefringence measurement based on the plane polariscope is proposed. The plane polariscope to carry this phase-shifting method is characterized by triple polarizers. One fixed polarizer is used as a linearly polarized state generator; the other two rotatable linear polarizers act as phase shifters. The measurement ranges are (0, π ) for phase retardation and (−π/4 , +π/4 ) for azimuth angle. Numerical simulation is carried out, and two mica wave plates are tested and evaluated. Compared with other commonly used methods on Senarmont or circular polariscopes, this method has the simplest optical setup and also is free from the errors of quarter wave plates. It has less wavelength dependence and temperature dependence and is expected to be more cost-effective and environmentally robust.

Paper Details

Date Published: 27 March 2013
PDF: 4 pages
Opt. Eng. 52(4) 040501 doi: 10.1117/1.OE.52.4.040501
Published in: Optical Engineering Volume 52, Issue 4
Show Author Affiliations
Xusheng Zhang, Beijing Institute of Technology (China)
Chuan He, Beijing Institute of Technology (China)
Haoyu Wang, Beijing Institute of Technology (China)

© SPIE. Terms of Use
Back to Top