Array of liquid crystal polymer-based Fabry-Perot resonators for image selection by polarization

In Ho Lee, Eui Sang Yu, Se Um Kim, Sin Doo Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate an array of the Fabry-Perot (FP) resonators with a liquid crystal polymer (LCP) layer inside each resonant cavity for image selection by polarization of the incident light. In our approach, the LCP molecules in the array of the FP resonators for different images are photo-aligned in different directions. Under unpolarized light, no image is observed. For the incident light polarized parallel to the photo-alignment direction, only the image corresponding to the polarization state among the recorded images is visible due to the difference in the effective refractive index between different image regions in the array of the FP resonators. Our approach based on anisotropic FP resonators will be useful for the realization of highly efficient and low-cost anti-counterfeiting systems and security labels.

Original languageEnglish (US)
Title of host publicationLiquid Crystals XX
EditorsIam Choon Khoo
PublisherSPIE
ISBN (Electronic)9781510602717
DOIs
StatePublished - Jan 1 2016
EventLiquid Crystals XX - San Diego, United States
Duration: Aug 28 2016Aug 30 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9940
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceLiquid Crystals XX
CountryUnited States
CitySan Diego
Period8/28/168/30/16

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Keywords

  • Fabry-Perot resonator
  • Liquid crystal polymer
  • Optical image storage
  • Photo-alignment
  • Structural color

Cite this

Lee, I. H., Yu, E. S., Kim, S. U., & Lee, S. D. (2016). Array of liquid crystal polymer-based Fabry-Perot resonators for image selection by polarization. In I. C. Khoo (Ed.), Liquid Crystals XX [994003] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9940). SPIE. https://doi.org/10.1117/12.2236167