基于RCWA的铁微结构光栅红外辐射特性分析

摘要

Micro scale grating has distinctive advantages and broad application prospects in controlling spec⁃tral emissivity of material. Based on rigorous coupled wave analysis (RCWA) and electromagnetic parameters ,the spectral selective property of the emissivity of micro scale grating of steel in infrared band is investigated. Further⁃more, combined with field distribution in grating region, the physical mechanism to form spectral and polarization selective properties is analyzed. The analyzed structure has guidance signification in the applications of infrared emissivity control.%微结构光栅在材料光谱发射率控制方面具有独特的优势和广阔的应用前景。利用严格耦合波分析(RCWA)，结合铁的电磁参数，考察了铁微结构发射率在红外波段的光谱选择性，并结合光栅区场的分布特征，分析了形成光谱和极化选择性的物理机理。所分析结构在红外发射率控制的相关应用中具有指导意义。