Infrared focal plane array crosstalk measurement

Details Infrared focal plane array crosstalk measurement Infrared focal plane array crosstalk measurement

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1686..125d&link_type=abstract

Proc. SPIE Vol. 1686, p. 125-135, Test and Evaluation of Infrared Detectors and Arrays II, Forney M. Hoke; Ed.

Physics

Optics

Scientific paper

Crosstalk between two neighboring elements in a focal plane array (FPA) occurs when signal incident on one element in the array is seen on another. This undesired effect can occur due to both the electrical and optical properties of the FPA. An effort is underway at the U.S. Army's Night Vision and Electro-Optics Directorate to develop a capability to measure crosstalk on both mid-wave infrared and long-wave infrared FPAs. A single detector in an array is illuminated using a laser source coupled with a beam expander, collimating lens, and focusing lens. The relative response of that detector to that of its neighboring detectors is measured to calculate crosstalk. The various components of the test station, the methodology for implementing the crosstalk measurement, and a model of the laser spot size are discussed.

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