Megapixel Longwave Infrared SLS FPAs for High Spatial Resolution Earth Observing Missions, Phase I

Metadata Updated: November 12, 2020

Earth observing missions like NASA's LANDSAT Data Continuity Mission - Thermal Infrared Sensor (LDCM-TIRS) require greater spatial resolution of the earth than the ~ 100m provided by the current instrument. Improving resolution to the desired ~ 30m requires increasing the number of pixels on target from the current 640x3 to ~ 2048x3. The TIRS instrument contains 640x512 longwave infrared quantum well infrared photodetector focal plane arrays (LWIR QWIP FPAs) jointly developed by NASA/GSFC and QmagiQ. We propose to achieve the higher pixel resolution while simultaneously improving quantum efficiency and operating temperature by using antimony-based strained layer superlattice (SLS) detectors. A key challenge is dealing with the effects of reducing pixel pitch from 25 microns down to ~ 10 microns, viz. optical fill-factor, optical crosstalk, processing difficulties, pixel operability, etc. As a stepping stone in Phase I, we propose to develop and deliver SLS FPAs with 1280x1024 format on 12 micron pitch that will address these challenges and quantify the effectiveness of our solutions. In Phase II, we will increase FPA format to 2048x2048 and push cutoff wavelength to the longest possible value while still hitting desired quantum efficiency and operating temperature targets in consultation with NASA/GSFC. Several FPAs will be delivered to NASA for evaluation.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

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Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher Space Technology Mission Directorate
Unique Identifier Unknown
Identifier TECHPORT_89972
Data First Published 2016-12-01
Data Last Modified 2020-01-29
Public Access Level public
Bureau Code 026:00
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Harvest Object Id b2293c89-bbb5-464b-aee2-bfe82cad5acd
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Program Code 026:027
Source Datajson Identifier True
Source Hash 58afdbf08eeeef3ce9153c4961fa5c23b517a1f3
Source Schema Version 1.1

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