Acta Optica Sinica, Volume. 38, Issue 9, 0922001(2018)
High Reflector Designed with One-Dimensional Photonic Crystal in 3-5 μm Infrared Region Based on Hetero-Structure
In this paper, a high reflector based on one-dimensional photonic crystal of hetero-structure in infrared region(3-5 μm) is investigated. The reflection characteristics of light wave in one-dimensional periodic photonic crystals are systematically analyzed. The reflectivity and the optimal forbidden band width of the λ/4 dielectric film system are verified by transfer matrix theory calculation and simulation. On this basis, Si and Y2O3 are selected to construct the one-dimensional photonic crystal of double hetero-structure with 24 layers. The simulation result shows that the reflectivity in infrared region (3-5 μm) is between 97.418% and 99.999%. In order to reduce the number of the film layers, using metal silver as an substrate, we design the dielectric layer structure of Si and Y2O3 with 9 layers of one-dimensional metal enhanced photonic crystal. The simulation result shows that the reflectivity is between 98.943% and 99.979% in the infrared band of 3-5 μm.
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Kangwen Li, Xiangcheng Li, Ping'an Chen, Yongzhi Cheng, Boquan Zhu. High Reflector Designed with One-Dimensional Photonic Crystal in 3-5 μm Infrared Region Based on Hetero-Structure[J]. Acta Optica Sinica, 2018, 38(9): 0922001
Category: Optical Design and Fabrication
Received: Mar. 23, 2018
Accepted: Apr. 16, 2018
Published Online: May. 9, 2019
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