Full-field and full-range sequential measurement of the slow axis angle and phase retardation of linear birefringent materials

Tsung Chih Yu, Shan Hsu, Thu Hien Pham Thi, Yu Lung Lo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A method is proposed for obtaining full-range sequential measurements of the slow axis angle and phase retardation of linear birefringent materials (LBMs) using a full-field heterodyne interferometer with a charge-coupled device (CCD) camera and an image processing algorithm based on a three-frame integrating-bucket method. The dynamic ranges of the principal axis and phase retardation measurements extend from 0° to 180° and from 0° to 360°, respectively. The proposed method not only enables fullrange measurements of the slow axis angle to be obtained, but also allows a decision to be made as to whether the principal axis labeled by the manufacturer is the slow axis or the fast axis. The standard deviations of the slow axis angle and phase retardation measurements are found to be 0: 14° and 0: 27°, respectively. In addition, it is shown that the noises induced by environmental disturbances are reduced by elimination of the dc component of the output light intensity in the image processing algorithm. We also investigate the sensitivity of the measured error caused by the orientation of LBM.

Original languageEnglish
Pages (from-to)4568-4576
Number of pages9
JournalApplied optics
Volume48
Issue number23
DOIs
Publication statusPublished - 2009 Aug 10

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Full-field and full-range sequential measurement of the slow axis angle and phase retardation of linear birefringent materials'. Together they form a unique fingerprint.

  • Cite this