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Optical Engineering

Control and design of nonuniformities in a hybrid focal plane array
Author(s): Vishnu Gopal; Vikram Dhar
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Paper Abstract

A model is presented to calculate response nonuniformity in a hybrid mercury cadmium telluride focal plane array in terms of material/ device parameters. The model predicts a minimum 10% intrinsic nonuniformity contribution from the IR detector array caused by compositional variations in detector material with the state-of-the-art HgCdTe material. In hybrid FPAs an additional contribution to the nonuniformity is caused by variations in the charge injection efficiency across the area of the array. The injection nonuniformity contribution can, however, be controlled to negligibly small values by working at very high injection efficiencies, on the order of 99%.

Paper Details

Date Published: 1 November 1992
PDF: 6 pages
Opt. Eng. 31(11) doi: 10.1117/12.60045
Published in: Optical Engineering Volume 31, Issue 11
Show Author Affiliations
Vishnu Gopal, Solid State Physics Lab. (India)
Vikram Dhar, Solid State Physics Lab. (India)

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