@inproceedings{a363f7c9f8e148dba43745ef12fed9ef,
title = "Signal nonlinearity measurements and corrections in MWIR and LWIR HgCdTe H2RG arrays for NEO Surveyor",
abstract = "The depletion region around each p-n junction in HgCdTe HAWAII-2RG detector arrays decreases in volume as charge is collected, causing the pixel capacitance to change continuously throughout an integration period. This changing capacitance manifests as a steadily decreasing measured signal rate while observing a constant flux. Ignoring this nonlinear response to signal accumulation can lead to underestimating the number of detected pho- tons by as much as 10%. Presented here are two methods, one simple and one complex, of measuring this signal nonlinearity and a theoretical framework behind a nonlinearity correction method. Additionally, experimental data are compared with simulations to explain methods to reduce noise in the nonlinearity measurement and identify deviations from the expected behavior that merit further study.",
keywords = "HgCdTe, Infrared Detector, LWIR, MWIR, Nearest Neighbor Interactions, Nonlinearity",
author = "Zengilowski, {Gregory R.} and McMurtry, {Craig W.} and Pipher, {Judith L.} and Reilly, {Nicholas S.} and Forrest, {William J.} and Cabrera, {Mario S.} and Dorn, {Meghan L.} and Wong, {Andre F.} and Mainzer, {A. K.}",
note = "Funding Information: The authors would like to thank Donald Lee of Teledyne Imaging Sensors and Peter Eisenhardt of the Jet Propulsion Laboratory for their contribution to this work. Additionally, the authors would like to acknowledge financial support from Cornell University through New York Space Grant 80NSSC20M0096, the Jet Propulsion Laboratory through the Near Earth Object Camera (NEOCam) Extended Phase A Subcontract 1573311, and the University of Arizona through the Near Earth Object Surveillance Mission (NEOSM) Extended Phase A grant 80MSFC20C0045. Publisher Copyright: {\textcopyright} SPIE. Downloading of the abstract is permitted for personal use only.; X-Ray, Optical, and Infrared Detectors for Astronomy IX 2020 ; Conference date: 14-12-2020 Through 22-12-2020",
year = "2020",
doi = "10.1117/12.2563138",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Holland, {Andrew D.} and James Beletic",
booktitle = "X-Ray, Optical, and Infrared Detectors for Astronomy IX",
}