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

fYear

2013

fDate

8-12 Sept. 2013

Firstpage

600

Lastpage

601

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Conference (IPC), 2013 IEEE

Conference_Location

Bellevue, WA

Print_ISBN

978-1-4577-1506-8

Type

conf

DOI

10.1109/IPCon.2013.6656437

Filename

6656437