Design of One-Dimensional Photonic Crystal Film Structure with High Reflection in Ultra-Wide Range of Mid-/Far-Infrared Band

被引：0
|
作者：
Tang D. [1 ]
Li X. [1 ]
Chen P. [1 ]
Zhu Y. [1 ]
Zhu B. [1 ]
机构：
[1] The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2022年 / 50卷 / 05期
关键词：
Computational simulation; Energy band curve; Infrared high reflective film structure; Photonic crystal;
D O I：
10.14062/j.issn.0454-5648.20210376
中图分类号：
学科分类号：
摘要：
The infrared films with ultra-high reflection is the key and basic materials for the realization of low loss optical device, infrared stealth, etc.. According to the transmission matrix principle of multilayer optical films, the reflectance and transmittance expressions of one-dimensional photonic crystals were obtained, and the energy band structure of one-dimensional photonic crystals was analyzed. Using the principle of transmission matrix, we designed a 28-layer λ/4 one-dimensional photonic crystal structure with Ge and SiO2 as dielectric materials. Also, the first and second band gaps of the photonic crystal calculated by the finite element method to be 2.01×1013~4.11×1013 Hz and 8.13×1013~1.02×1014 Hz, respectively. The optimized λ/4 one-dimensional photonic crystal structure has as low as 14 layers, thus achieving high reflections of 3~5μm and 8~14μm. © 2022, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：1310 / 1315
页数：5
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