红外周期性吸波结构的设计

车志新; 田昌会; 陈晓莉; 王斌科; 韩文亮

红外技术, 2018, 40 (4): 327, 网络出版: 2018-06-09

红外周期性吸波结构的设计

Design of an Infrared Periodic Absorbent Structure

论文大纲

车志新 ^1,2,*田昌会 ¹陈晓莉 ¹王斌科 ¹韩文亮 ²

作者单位

¹ 空军工程大学理学院，陕西西安 710051

² 中国人民解放军93108 部队，黑龙江齐齐哈尔 114001

周期性结构红外吸收光谱红外探测器双峰吸收 periodic structure infrared absorption spectrum infrared detector double-peak absorption

摘要

为设计红外周期性吸波结构，本文分析了周期性吸波结构的谐振单元尺寸、介质层厚度和介电常数对吸波效果的影响，研究周期性吸波结构的吸收规律，设计了一种由两种不同尺寸圆形贴片构成的周期性结构，仿真结果表明该结构在SO₂ 气体探测器的两个特征吸收波长4.0 μm 和7.35 μm 处吸收率分别达到99.67%和99.97%，并且该结构对极化方向不敏感，吸波效果良好。

Abstract

In order to design an infrared periodic absorbent structure, this paper explored the absorption regularity of a periodic absorbent structure. This was achieved through analyzing the effect of the geometric parameters of resonant units and thickness and permittivity of dielectric layers on absorption properties. A periodic absorbent structure composed of circular patches with different radii was designed. Simulation results reveal that the structure was insensitive to polarization and that absorption levels reached 99.67% and 99.97% at thicknesses of 4.0 μm and 7.35 μm respectively. The absorption levels were found to correspond to two distinct characteristic wavelengths when analyzed through a SO₂ detector.

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车志新, 田昌会, 陈晓莉, 王斌科, 韩文亮. 红外周期性吸波结构的设计[J]. 红外技术, 2018, 40(4): 327. CHE Zhixin, TIAN Changhui, CHEN Xiaoli, WANG Binke, HAN Wenliang. Design of an Infrared Periodic Absorbent Structure[J]. Infrared Technology, 2018, 40(4): 327.

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