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

doi:10.1117/12.2236167

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

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

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 language	English (US)
Title of host publication	Liquid Crystals XX
Editors	Iam Choon Khoo
Publisher	SPIE
ISBN (Electronic)	9781510602717
DOIs	https://doi.org/10.1117/12.2236167
State	Published - 2016
Event	Liquid Crystals XX - San Diego, United States Duration: Aug 28 2016 → Aug 30 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9940
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Liquid Crystals XX
Country/Territory	United States
City	San Diego
Period	8/28/16 → 8/30/16

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2011-0028422).

Publisher Copyright:
© 2016 SPIE.

Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.

Keywords

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

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10.1117/12.2236167

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Array of liquid crystal polymer-based Fabry-Perot resonators for image selection by polarization. / Lee, In Ho; Yu, Eui Sang; Kim, Se Um et al.
Liquid Crystals XX. ed. / Iam Choon Khoo. SPIE, 2016. 994003 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9940).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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title = "Array of liquid crystal polymer-based Fabry-Perot resonators for image selection by polarization",

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.",

keywords = "Fabry-Perot resonator, Liquid crystal polymer, Optical image storage, Photo-alignment, Structural color",

author = "Lee, {In Ho} and Yu, {Eui Sang} and Kim, {Se Um} and Lee, {Sin Doo}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2011-0028422). Publisher Copyright: {\textcopyright} 2016 SPIE. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.; Liquid Crystals XX ; Conference date: 28-08-2016 Through 30-08-2016",

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AU - Lee, In Ho

AU - Yu, Eui Sang

AU - Kim, Se Um

AU - Lee, Sin Doo

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2011-0028422). Publisher Copyright: © 2016 SPIE. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Fabry-Perot resonator

KW - Liquid crystal polymer

KW - Optical image storage

KW - Photo-alignment

KW - Structural color

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T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Liquid Crystals XX

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PB - SPIE

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Y2 - 28 August 2016 through 30 August 2016

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

Abstract

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