Title :
Modulation transfer function of infrared focal plane arrays
Author :
Gunapala, S.D. ; Ting, D.Z. ; Soibel, A. ; Rafol, S.B. ; Khoshakhlagh, A. ; Mumolo, J.M. ; Liu, J.K. ; Keo, S.A. ; Hill, C.J.
Author_Institution :
Center for Infrared Sensors, California Inst. of Technol., Pasadena, CA, USA
Abstract :
The modulation transfer function (MTF) of an imaging system quantifies the ability of the system to resolve or transfer spatial frequencies.It is important to remember that the MTF of a system is a property of the entire system, therefore, all of the system components such as the FPA, lens assembly, cabling, frame-grabber, cooler, A/D converter, etc. contribute to the final MTF performance of the system. A megapixel mid-wave and long-wave IR quantum well infrared photodetector (QWIP) focal plane arrays (FPAs) and a 320x256 pixel antimonides superlattice based Complementary Barrier IR Detector (CBIRD) FPA were fabricated. The MTF of the respective devices were measured and reported.
Keywords :
focal planes; infrared detectors; optical fabrication; optical transfer function; photodetectors; quantum well devices; semiconductor superlattices; CBIRD; FPA; MTF; QWIP; antimonides superlattice; complementary barrier IR detector FPA; infrared focal plane arrays; long-wave IR quantum well infrared photodetector; midwave IR quantum well infrared photodetector; modulation transfer function; spatial frequencies; Electrooptic modulators; Imaging; Optical arrays; Superlattices; Temperature measurement; Transfer functions;
Conference_Titel :
Photonics Conference (IPC), 2013 IEEE
Conference_Location :
Bellevue, WA
Print_ISBN :
978-1-4577-1506-8
DOI :
10.1109/IPCon.2013.6656437
