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Proceedings Paper

MTF comparisons between mesa and planar focal plane detector structures
Author(s): Mitchell Perley; Justin Wehner; Dave Buell; Jason Micali; Joe McCorkle; Mark Rehfield; Dave Williams; Andrew Dixon; Neil Malone
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Paper Abstract

Raytheon Vision Systems (RVS) has developed scanning, high-speed (<3klps), all digital, with on-chip Analog-to-Digital Conversion (ADC), mid-wave infrared (MWIR 3-5mm) focal plane arrays (FPA) with excellent modulation transfer function (MTF) performance. Using secondary ion mass spectrometry (SIMS) data and detailed models of the mesa geometry, RVS modeled the predicted detector MTF performance of detectors. These detectors have a mesa structure and geometry for improved MTF performance compared to planar HgCdTe and InSb detector structures and other similar detector structures such as nBn. The modeled data is compared to measured MTF data obtained from edge spread measurements and shows good agreement, Figure 1. The measured data was obtained using a custom advanced test set with 1µm precision alignment and automatic data acquisition for report generation in less than five minutes per FPA. The measured MTF values of 83 unique parts, Figure 2, had a standard deviation of 0.0094 and a mean absolute deviation of 0.0066 at half Nyquist frequency, showing excellent process repeatability and a design that supports high MTF with good repeatability.

Paper Details

Date Published: 19 September 2013
PDF: 11 pages
Proc. SPIE 8867, Infrared Remote Sensing and Instrumentation XXI, 88670U (19 September 2013); doi: 10.1117/12.2029641
Show Author Affiliations
Mitchell Perley, Raytheon Vision Systems (United States)
Justin Wehner, Raytheon Vision Systems (United States)
Dave Buell, Raytheon Vision Systems (United States)
Jason Micali, Raytheon Space and Airborne Systems (United States)
Joe McCorkle, Raytheon Space and Airborne Systems (United States)
Mark Rehfield, Raytheon Space and Airborne Systems (United States)
Dave Williams, Raytheon Vision Systems (United States)
Andrew Dixon, Raytheon Vision Systems (United States)
Neil Malone, Raytheon Vision Systems (United States)

Published in SPIE Proceedings Vol. 8867:
Infrared Remote Sensing and Instrumentation XXI
Marija Strojnik Scholl; Gonzalo Páez, Editor(s)

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