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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 19, Iss. 11 — Nov. 1, 2002
  • pp: 2590–2594

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

Andy Ying-Guey Fuh, Chia-Rong Lee, and Ting-Shan Mo  »View Author Affiliations

JOSA B, Vol. 19, Issue 11, pp. 2590-2594 (2002)

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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.

© 2002 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(090.2900) Holography : Optical storage materials
(160.3710) Materials : Liquid crystals
(160.5470) Materials : Polymers

Andy Ying-Guey Fuh, Chia-Rong Lee, and Ting-Shan Mo, "Polarization holographic grating based on azo-dye-doped polymer-ball-type polymer-dispersed liquid crystals," J. Opt. Soc. Am. B 19, 2590-2594 (2002)

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