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 language||English (US)|
|Title of host publication||Liquid Crystals XX|
|Editors||Iam Choon Khoo|
|State||Published - 2016|
|Event||Liquid Crystals XX - San Diego, United States|
Duration: Aug 28 2016 → Aug 30 2016
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Conference||Liquid Crystals XX|
|Period||8/28/16 → 8/30/16|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2011-0028422).
© 2016 SPIE.
Copyright 2016 Elsevier B.V., All rights reserved.
- Fabry-Perot resonator
- Liquid crystal polymer
- Optical image storage
- Structural color