木堆积结构三维光子晶体热防护涂层设计优化与仿真  

Optimization Design and Simulation of Woodpile Structure 3D Photonic Crystals Thermal Protection Coating

作　　者：赵选科 徐斌 ZHAO Xuanke;XU Bin(Rocket Force University of Engineering,Xi’an 710025,Shaanxi;Troops No.96744,Hanzhong 723000,Shaanxi)

机构地区：[1]火箭军工程大学,陕西西安710025 [2]96744部队,陕西汉中723000

出　　处：《火箭军工程大学学报》2024年第4期68-77,共10页Journal of Rocket Force University of Engineering

摘　　要：针对高能激光辐照产生的热破坏效应,提出了一种基于SiC的木堆积结构三维光子晶体(3D-Photonic Crystals,3D-PCs)热防护涂层技术方案。运用平面波展开法和RSoft软件工具,系统研究了木堆积结构3D-PCs层带隙特性与其结构参数之间的关系,并针对1300 K温度下的高能激光热防护应用场景进行了优化计算,得到了此应用场景下木堆积结构3D-PCs层的最优参数:晶格常数0.8524μm、层间距离0.298μm、介质柱宽度0.2412μm、光子带隙对应的截止波长分别为2.3705μm和2.0875μm。研究方法及结论经适当条件参数调整,可推广至高超声速气动加热等类似热环境下的热防护涂层设计。To address the thermal damage effects generated by high-energy laser irradiation,a thermal protection scheme for SiC-based Woodpile structure 3D-photonic crystals(3D-PCs)was proposed.With RSoft software,the relationship between the band-gap characteristics and structural parameters of Woodpile structure 3D-PCs layers was systematically studied by the plane wave expansion(PWE)method.Moreover,optimization calculations about high-energy laser thermal protection application scenarios at 1300 K temperature were carried out to obtain the optimal parameters of Woodpile structure 3D-PCs layers:the crystal lattice constant is 0.8524μm,the distance between layers is 0.298μm,the width of the dielectrice cylinder is 0.2412μm,the cutoff wavelengths corresponding to band-gaps are 2.3705μm and 2.0875μm.By adjusting parameters appropriately,the proposed method and its conclusions could be applied to the design of thermal protection coating when the object is under hypersonic aerodynamic-heating and other similar thermal environments.

关 键 词：热防护涂层 三维光子晶体 木堆积结构 平面波展开法 光子带隙 

分 类 号：O734[理学—晶体学]