物理学报Issue(20)：263-269,7.DOI:10.7498/aps.62.204208
二维光栅与周期性缝隙阵列组合薄膜结构的杂散光抑制
Suppression of the stray light of 2-dimensional gratings combined with an array of periodic slit
摘要
Abstract
An array of periodic slits, combined with classic grid two-dimensional gratings, can acquire a dual band-pass characteristic in radar and optical wave band. The concentrated distribution of stray light energy will severely restrict the applications of classic composite film structure in high precision detection and imaging. To solve this problem, a novel composite film structure is developed in this paper, which is composed of slit elements and annular gratings. A scalar diffractive model is built based on Fraunhofer diffractive theory through contrasting the diffractive properties of two kinds of composite film structures. The theoretical simulations and experimental results both prove that the annular composite film structure can suppress the stray light effectively, for its higher transmittance, lower ratio and more uniform distribution of stray light, and enhance the reliability of composite film structure in the practical optical applications.关键词
二维光栅/组合薄膜结构/衍射光强/杂散光Key words
2-dimensional grating/composite film structure/intensity of diffractive light/stray light引用本文复制引用
于淼,高劲松,张建,徐念喜..二维光栅与周期性缝隙阵列组合薄膜结构的杂散光抑制[J].物理学报,2013,(20):263-269,7.基金项目
长春光机所创新三期工程项目(批准号:093Y32J090)资助的课题.*Project supported by the Third Innovation Project of Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences (Grant No.093Y32J090) （批准号:093Y32J090）
