Polarization holographic grating based on azo-dye-doped polymer-ball-type polymer-dispersed liquid crystals

Andy Ying Guey Fuh, Chia Rong Lee, Ting Shan Mo

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Abstract

A polarization grating (PG) written in an azo-dye-doped film of polymer-ball-type polymer-dispersed liquid crystals was investigated. The writing beams were two mutually orthogonal (s- and p-polarized) polarized beams. The PG resulted from molecular reorientation of the liquid crystals as a result of their interaction with the dye molecules adsorbed on the surface of the polymer balls. Polarization characteristics of the diffracted beams and the grating pattern were studied under a polarizing optical microscope with a crossed analyzer. The results indicate that the PG diffracts the linearly polarized incident light into beams with various polarizations. Accordingly, the grating can be used as an unpolarized or a polarized beam splitter, depending on the polarization of the incident light. A model based on the Jones matrix approach was developed, and it closely fits the experimental results.

Original languageEnglish
Pages (from-to)2590-2594
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Volume19
Issue number11
DOIs
Publication statusPublished - 2002 Nov

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All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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