摘要
为了解决常用光陷阱结构中腔体开口立体角对吸收比的限制,利用低反射比镜面反射镜(250nm^25μm范围内反射比小于5%),设计了一种斜面微结构腔以及一种四象限超黑光吸收腔。在内壁涂层材料吸收比为0.95的条件下,理论上前者的吸收比可以达到0.999999,后者的吸收比近乎于1,显著的提升了腔体吸收比,实现了宽光谱超黑光吸收腔。
To solve the limitation of absorptance resulted from the solid angle of the opening of the cavity in the commonly used light-trapping structure,a beveled microstructure cavity and a four-quadrant ultra-black light absorption cavity were designed based on the low-reflectance specular mirror( reflectance less than 5% in the range of 250 nm ~ 25μm). Under the condition that the inner wall coating material has an absorptance of 0. 95,the theoretical absorptance of the former cavity can reach 0. 999999,and the absorptance of the latter cavity is close to 1,which significantly improves the cavity absorptance,and achieves the purpose in designing the broad spectrum ultra-black light absorption cavity.
作者
马宇轩
冯国进
MA Yuxuan;FENG Guojin(National Institute of MetrologyjBeijing 100029,China)
出处
《计量技术》
2020年第5期85-88,共4页
Measurement Technique
基金
国家重点研究开发计划(2018YFF0212402).
关键词
超黑光吸收腔
光陷阱
立体角
反射镜
斜面微结构腔
四象限光吸收腔
ultra-black absorption cavity
light-trapping
solid angle
reflector
beveled microstructure cavity
four-quadrant light absorption cavity
作者简介
马宇轩(1995-).中国计量科学研究院在读研究生,研究方向:超黑材料特性计量.邮箱:mayx@nim.ac.cn;通讯作者:冯国进(1981-),中国计量科学研究院副研究员,研究方向:材料光谱光度计量.邮箱fenggujin@e nim.ae.cn。
