Engineering topics
Publications and source records attributed to Gunapala, S..
In this paper, we discuss the development of this very sensitive long waelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array (FPA) and its performance in quantum efficiency, NEAT, uniformity, and operability.
Diffractive optical elements (microlenses) for quantum will infrared photodetectors (QWIPs) were fabricated by two techniques: 1) standard lithography of a binary optical structure and 2) PMMA pattern transfer for an analog diffractive optic structure.
There has been much interest in very long-wavelength quantum well infrared photodetectors and associated intersubband absorption due to their mature technology and the possibility of producing high performance large area two-dimensional imaging arrays.
Long wavelength heterojunction internal photoemission infrared detectors have been successfully demonstrated utilizing the growth of degenerately boron doped layers.
Infrared detectors operating from mid IR wavelengths to very long wavelength IR are of great interest for a variety of ground based and space based applications such as night vision, early warning systems, navigation, flight control systems, weather monitoring, and astronomy.
Explore the source record for details and available documents.