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Arguably one of the simplest device realizations of the classic - particle-in-a-box - problem of basic quantum mechanics is the Quantum Well Infrared Photodetector (QWIP).
Mid-wave infrared (MWIR) and long-wave infrared (LWIR) multicolor focal plane array (FPA) cameras are essential for many DoD and NASA applications including Earth and planetary remote sensing. In this paper we summarize our recent development of large format multicolor QWIP FPA that cover MWIR and LWIR bands.
The GaAs/AlGaAs based Quantum Well Infrared Photodetectors (QWIPs) afford greater flexibility than the usual extrinsically doped semiconductor IR detectors because the wavelength of the peak response and cutoff can be continuously tailored over an wavelength between 6-20 mu m.
The Jet Propulsion Laboratory is developing a 512x640-format, dual broadband, Quantum Well Infrared Photodetector (QWIP) focal plane array (FPA for an imaging interferometer.
An optimized long-wavelength very long-wavelength two-color Quantum Well Infrared Photodetector (QWIP) device structure has been designed.
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The Spatially Modulated Prism Interferometer (SMPI) is a new type of imaging interferometer that has double the efficiency of conventional interferometers and only a fraction of the mass and volume.
In this presentation, we will discuss the development of this large format broadband infrared FPA based on a GaAs/AlGaAs materials system and its performance in quantum efficiency, uniformity, and operability.
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Intrinsic infrared detectors in the long-wavelength range (6 - 20 ??are based on interband transition which promotes an electron across the band gap (E(sub g)) from the valence band to the conduction band.
A mid-wavelength 1024x1024 pixel quantum well infrared photodetector (QW) focal plane array has been demonstrated with excellent imagery. Noise equivalent differential temperature (NETD) of 19 mK was achieved at 95K operating temperature with f/2.5 optics at 300K background. This focal plane array has shown background limited performance (BLIP) at 90K operating temperature with the same optics and background conditions. In this paper, we will discuss its performance in quantum efficiency, NETD, uniformity, and operability.
NASA, commercial, medical, and defense applications such as Earth observation systems, astronomy, weather monitoring, thermal mapping, thermography, missile tracking, and night vision aids, etc. require high performance large format long wavelength infrared (LWIR) detector arrays in the range of 8-16 µm.
Many commercial and government applications need high performance, large format, long-wavelength infrared (LWIR) detector arrays in the range of 6-20 mu.
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Explore the source record for details and available documents.
The Jet Propulsion Laboratory is developing a 512x640 format, dual broadband, Quantum Well Infrared Photodetector focal plane array for an imaing interferometer.