光子晶体薄膜可见光-红外光谱设计及其辐射特性分析  

Visible-infrared Spectrum Design and Radiation Characteristics Analysis of Photonic Crystal Films

作　　者：邓子琛 王明亮 刘佳琪 王鲜[1] 龚荣洲[1] DENG Zichen;WANG Mingliang;LIU Jiaqi;WANG Xian;GONG Rongzhou(School of Integrated Circuit,Huazhong University of Science and Technology,Wuhan,430074;National Key Laboratory of Science and Technology on Test Physics&Numerical Mathematical,Beijing,100076)

机构地区：[1]华中科技大学集成电路学院,武汉430074 [2]试验物理与计算数学国家重点实验室,北京100076

出　　处：《导弹与航天运载技术（中英文）》2024年第3期73-78,共6页Missiles and Space Vehicles

摘　　要：为分析光子晶体薄膜可见光、红外光谱与红外辐射关联特性,设计了可见光反射率不同、红外发射率相同的3种Ge/ZnS体系光子晶体薄膜。通过红外辐射特性仿真,讨论了3种薄膜分别处于真空环境和大气环境中太阳光照对薄膜红外辐射特性的影响规律。仿真结果表明,在存在太阳光照的前提下,可见光反射率不同会导致3种薄膜表面温度出现差异;对于红外辐射而言,针对3~5μm波段,高反射表面处于低温状态下会反射太阳辐射,对红外低可探测造成负面影响;针对8~14μm波段,当红外发射率足够低时,3种薄膜的红外辐射出射度较为接近。制备的样品反射光谱、长波红外热像测试结果表现出与仿真的一致性,验证了3种薄膜的红外低可探测效果。研究结果有助于认知光子晶体薄膜的可见光、红外光谱及其红外辐射关联特性,并为兼容雷达波的可见光、红外低可探测材料光谱设计和应用方案提供参考。To analyze the correlation characteristics between visible-infrared spectrum and infrared radiation of photonic crystal films,three kinds of Ge/ZnS photonic crystal films with different visible reflectance and the same infrared emissivity are designed.By simulating the infrared radiation characteristics of photonic crystal structures,the influence of solar illumination and reflection spectrum on the infrared radiation characteristics of the films in vacuum and atmospheric environments is discussed.The simulated results show that the difference of visible reflectance will lead to the discrepancy of surface temperature in the presence of sunlight.For infrared radiation,the high reflection surface will reflect solar radiation at low temperature for 3~5μm waveband,which has a negative impact on infrared camouflage.For 8~14μm waveband,when the infrared emissivity is low enough,the infrared radiation emittance of the photonic crystal structures is close.The fabrication of samples and the measurement of reflection spectrum and infrared thermography are carried out.The test results show the consistency with the simulation,and verify the infrared camouflage performance of three films.The research results are helpful to understand the visible-infrared spectrum and infrared radiation correlation characteristics of photonic crystal films,and provide reference for the spectral design and application scheme of visible-infrared camouflage materials compatible with microwave camouflage.

关 键 词：光子晶体薄膜 可见光反射率 红外发射率 温度 热辐射 

分 类 号：V416.4[航空宇航科学与技术—航空宇航推进理论与工程]