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Polarization-dependent reflective colors incorporating meta-gratings with an asymmetric profile
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Paper Abstract

A reflective color filter based on the standing-wave resonance is proposed, incorporating an asymmetric cross-shaped aluminum grating on top, a sandwiched silicon nitride layer and an aluminum mirror at bottom. By varying the length of grating arms or the polarization of incident lights, reflective colors as cyan, magenta and yellow can be obtained conveniently. Specially, reflections show good angular tolerance up to 60° for transverse electric polarization, while they demonstrate high sensitivity to incident angles of transverse magnetic polarization. Furthermore, the black color can be realized in reflection by encoding four gratings into one pixel at the optical diffraction limit. The color filter proposed here has great potential in applications as reflective LCD, full color printing and anti-counterfeiting.

Paper Details

Date Published: 25 October 2018
PDF: 6 pages
Proc. SPIE 10824, Plasmonics III, 1082418 (25 October 2018); doi: 10.1117/12.2505021
Show Author Affiliations
Shangliang Wu, Soochow Univ (China)
Yan Ye, Soochow Univ. (China)
Linsen Chen, Soochow Univ. (China)

Published in SPIE Proceedings Vol. 10824:
Plasmonics III
Hongxing Xu; Satoshi Kawata; David J. Bergman, Editor(s)

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