红外与毫米波学报2018，Vol.37Issue(3)：290-295,6.DOI:10.11972/j.issn.1001-9014.2018.03.007
可见近红外波段碲镉汞材料光学常数测定与宽谱增透设计
Determination of optical constants of HgCdTe, and the broadband AR coating design
摘要
Abstract
After removing the Hg1-x Cdx Te infrared focal plane device substrate, the response bandwidth can be extended to the visible light band, which can significantly reduce the size and weight of the sys-tem in the application of hyperspectral imaging, and miniaturize the photoelectric detection system. Miniaturization has important practical value.The determination of the optical constants of HgCdTe materials in the visible near-infrared region is of great significance for the performance of HgCdTe de-vices in this response band.The ellipsometric spectra of different compositions of HgCdTe materials were measured and their optical constants in the band from 400 to 1600 nm were fitted.The obtained optical constants were verified by using the reflectance spectra.Using these measured values, and using ZnS and YF3 as the high and low refractive index anti-reflective coating materials respectively, HgCdTe focal plane devices responding to different widths of back-incident near-infrared light have been de-signed.Spectroscopic AR coatings have an average transmission rate in the range of the response band of more than 90％.关键词
碲镉汞/可见近红外波段/光学常数/增透膜Key words
Hg1-x Cdx Te/visible to near-infrared/optical constant/antireflection coatings分类
数理科学引用本文复制引用
樊华,张文杰,马小凤,廖清君,胡晓宁..可见近红外波段碲镉汞材料光学常数测定与宽谱增透设计[J].红外与毫米波学报,2018,37(3):290-295,6.基金项目
中国科学院GF创新基金(CXJJ-16S011) Supported by GF innovation foundation of Chinese Academy of Sciences(CXJJ-16S011) （CXJJ-16S011）
