Abstract
Herein, a novel design concept of a surface graphical photonic crystal (SGPC) has been proposed as an effective strategy to achieve angle-insensitive visible-infrared compatible camouflage. The SGPC, designed as a quasi-periodic Ge/ZnS photonic crystal following an arithmetic sequence in the physical thickness for each period, possesses a functionalized ZnS surface consisting of lithography-fabricated mosaic patterns with various etching depths. Our experiment data demonstrate the excellent infrared camouflage capability of the SGPC with a high average reflectance of 92.7% (surface emissivity ) in 8–14 μm, and related simulations further reveal the satisfying angle-insensitive reflection characteristic with a maximum effective relative photonic bandgap in . Besides, the irregular mosaic patterns with various etching depths constitute a colorful digital camouflage on the surface of the SGPC, realizing an outstanding optical camouflage capacity without distinct angle dependency (dominant wavelength shift ).
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Y. C. Lin, C. H. Tsou, and W. J. Hsueh
Opt. Lett. 43(17) 4120-4123 (2018)
Mukesh Kumar Shukla and Ritwick Das
Opt. Lett. 43(3) 362-365 (2018)
Lei Wang, Shangyu Zhang, Jian Dong, Lanxin Ma, Chong Zheng, Wenjie Zhang, and Linhua Liu
Opt. Mater. Express 13(10) 2746-2758 (2023)