Absorption-based polarization gratings

Tao Zhan, Jianghao Xiong, Guanjun Tan, Shin Tson Wu*

*Corresponding author for this work

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Abstract

We demonstrate an absorption-based polarization grating made of dichroic dye-doped polymerizable liquid crystal. These gratings manifest a polarization-sensitive diffraction efficiency over the absorption band of the employed dye material, based on our theoretical analysis and experimental evidence. The spectral range can be easily tailored by varying the dye material. Since these gratings generate first-order diffracted beams with orthogonal circular polarizations, they can be utilized as key components in polarimetry systems. Meanwhile, due to their absorptive nature, these polarization gratings can function as LED-compatible polarization masks for photopatterning while fabricating various liquid crystal devices.

Original languageEnglish
Pages (from-to)13907-13912
Number of pages6
JournalOptics Express
Volume28
Issue number9
DOIs
Publication statusPublished - 27 Apr 2020
Externally publishedYes

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Zhan, T., Xiong, J., Tan, G., & Wu, S. T. (2020). Absorption-based polarization gratings. Optics Express, 28(9), 13907-13912. https://doi.org/10.1364/OE.392550