Detection of polarization state of a polarized light using azimuthally symmetric dye-doped liquid crystals

Cheng Kai Liu, Ming Chi Liao, Chi Tang Huang, Shao Hao Liao, Ko Ting Cheng

Research output: Contribution to journalArticlepeer-review

Abstract

Detection of polarization state of a polarized light using azimuthally symmetric dye-doped liquid crystals (AS-DdLCs) is demonstrated. The first method is that the image of a polarized light with unknown polarization state after passing through the AS-DdLCs is captured by a charge-coupled device and transformed to a gray-level image, which is then analyzed by the designed program to identify the polarization state of the polarized light. The second method of comparing images using a database to identify the polarization state of an unknown polarized light is proposed. The techniques to increase detection accuracy of the two methods, and the comparison of the two methods are also discussed.

Original languageEnglish
Article number110446
JournalDyes and Pigments
Volume204
DOIs
StatePublished - Aug 2022

Keywords

  • Azimuthally symmetric liquid crystals
  • Dichroic dyes
  • Liquid crystals
  • Polarization
  • Polarization detection

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