Modulation transfer function of QWIP and superlattice focal plane arrays

• Published in: Infrared physics & technology Vol. 59; pp. 64 - 71
• Main Authors: Gunapala, S.D., Rafol, S.B., Ting, D.Z., Soibel, A., Liu, J.K., Khoshakhlagh, A., Keo, S.A., Mumolo, J.M., Nguyen, J.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-07-2013
• Subjects: Focal Plane Arrays; Modulation Transfer Function; QWIPs; Superlattices; QWIPs; Focal Plane Arrays; Superlattices; Modulation Transfer Function
• ISSN: 1350-4495; 1879-0275
• DOI: 10.1016/j.infrared.2012.12.016

► Demonstrated 18.6 mK NEDT with LWIR superlattice focal plane array. ► Demonstrated nine band multi-wavelength QWIP focal plane array. ► Measured the modulation transfer function of QWIP and Superlattice detector arrays.
Modulation transfer function (MTF) is the ability of an imaging system to faithfully image a given object. The MTF of an imaging system quantifies the ability of the system to resolve or transfer spatial frequencies. In this paper we will discuss the detail MTF measurements of a 1024×1024pixel multi-band quantum well infrared photodetector and 320×256pixel long-wavelength InAs/GaSb superlattice infrared focal plane arrays.