红外技术2024，Vol.46Issue(3)：256-260,5.
广角衍射光学元件的优化设计
Optimal Design of Wide Angle Diffractive Optical Element
摘要
Abstract
The influence of the incident angle on the diffraction efficiency and microstructure height of the diffractive optical element(DOE)was analyzed to further study the influence of the incident angle and period width on the polychromatic integral diffraction efficiency(PIDE).Based on the extended scalar diffraction theory(ESDT),a mathematical model of the relationship among the microstructure height,incident angle,and period width of the DOE was established.An optimal design method for structural parameters,such as the design wavelength and microstructure height,was proposed based on maximizing the comprehensive PIDE(CPIDE)within a certain range of incident angles.A DOE operating within the infrared waveband was considered as an example.The results indicate that when the relative period width is 20 and the incidence angle range is 0° to 40°,the CPIDE of the DOE is 94.15％,and the microstructure height is 1.3396 μm.This design method can realize the optimal design of a wide-angle DOE.关键词
衍射光学元件/衍射效率/微结构高度/入射角度Key words
diffractive optical element/diffraction efficiency/microstructure height/incident angle分类
物理学引用本文复制引用
杨亮亮,刘成林,赵勇兵,沈法华,赵琪,刘建利..广角衍射光学元件的优化设计[J].红外技术,2024,46(3):256-260,5.基金项目
国家自然科学基金(61904158) （61904158）
江苏省智能光电器件与测控工程研究中心开放基金(306054014) （306054014）
江苏省重点研发计划-社会发展项目(BE2021685)江苏省自然科学基金面上项目(BK20201475). （BE2021685）
