Spatial Noise Reduction by Optical Filters in Mercury Cadmium Telluride Hybrid Focal Plane Arrays

Defence Science Journal

Vishnu Gopal¹  S.K. Singh¹ 

[1] Solid state Physics Laboratory, Delhi

关键词: Optical filters;    spatial noise;    temporal noise;    NETD performance;    HgCdTe FPAs;    MWIR anays;    LWIR arrays;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

This paper discusses the role of opticalfilters in the reduction of spatial noise in Hgl-xCdxTe hybrid focalplane arrays (FPAs). It is shown that optical filters of appropriatecut-off wavelength can cause considerable reduction in the spatial noiseof both mid-wavelength infrared (MWIR) and long-wavelength infrared(LWIR) arrays. These filters can result in considerable improvement inthe NETD performance of a MWIR HgCdTe FPA, whereas in LWJR FPAs, thesecan also be used to trade-off the requirement of composition uniformityof the HgCdTe substrate, depending upon the relative magnitude oftemporal and spatial noise components

【 授权许可】

Unknown