
Proceedings Paper
Temperature dependence of 1/f noise, defects, and dark current in small pitch MWIR and LWIR HDVIP® HgCdTe FPAsFormat | Member Price | Non-Member Price |
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Paper Abstract
Reducing an array’s pixel pitch reduces the size and weight of the focal plane array (FPA) and its associated dewar,
cooler and optics. Higher operating temperatures reduce cool-down time and cooler power, enabling reduced cooler size
and weight. High operating temperature small pitch (≤15 um) infrared detectors are therefore highly desirable. We have
characterized a large number of MWIR and LWIR FPAs as a function of temperature and cutoff wavelength to
determine the impact of these parameters on the FPA’s dark current, 1/f noise and defects. The 77K cutoff wavelength
range for the MWIR arrays was 5.0-5.6 um, and 8.5-11 um for the LWIR arrays. DRS’ HDVIP® FPAs are based on a
front-side illuminated, via interconnected, cylindrical geometry, N+/N/P architecture. An FPA’s 1/f noise is manifested
as a tail in the FPA’s rmsnoise distribution. We have found that the model-independent nonparametric skew
[(mean–median)/standard deviation] of the rmsnoise distribution is a highly effective tool for quantifying the magnitude
of an FPA’s 1/f noise tail. In this paper we show that a standard FPA’s 1/f noise varies as ni (the intrinsic carrier
concentration), in agreement with models that treat dislocations as donor pipes located within the P-volume of the unit
cell. Nonstandard FPAs have been observed with systemic 1/f noise which varies as ni2.
Paper Details
Date Published: 18 June 2013
PDF: 10 pages
Proc. SPIE 8704, Infrared Technology and Applications XXXIX, 87042O (18 June 2013); doi: 10.1117/12.2015816
Published in SPIE Proceedings Vol. 8704:
Infrared Technology and Applications XXXIX
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; Paul R. Norton; Patrick Robert, Editor(s)
PDF: 10 pages
Proc. SPIE 8704, Infrared Technology and Applications XXXIX, 87042O (18 June 2013); doi: 10.1117/12.2015816
Show Author Affiliations
Roger L. Strong, DRS Network and Imaging Systems (United States)
Michael A. Kinch, DRS Network and Imaging Systems (United States)
Michael A. Kinch, DRS Network and Imaging Systems (United States)
John M. Armstrong, DRS Network and Imaging Systems (United States)
Published in SPIE Proceedings Vol. 8704:
Infrared Technology and Applications XXXIX
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; Paul R. Norton; Patrick Robert, Editor(s)
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