MTF comparisons between mesa and planar focal plane detector structures

Mitchell Perley; Justin Wehner; Dave Buell; Jason Micali; Joe McCorkle; Mark Rehfield; Dave Williams; Andrew Dixon; Neil Malone

doi:10.1117/12.2029641

19 September 2013 MTF comparisons between mesa and planar focal plane detector structures

Mitchell Perley, Justin Wehner, Dave Buell, Jason Micali, Joe McCorkle, Mark Rehfield, Dave Williams, Andrew Dixon, Neil Malone

Author Affiliations +

Proceedings Volume 8867, Infrared Remote Sensing and Instrumentation XXI; 88670U (2013) https://doi.org/10.1117/12.2029641
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

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.

Citation Download Citation

Mitchell Perley, Justin Wehner, Dave Buell, Jason Micali, Joe McCorkle, Mark Rehfield, Dave Williams, Andrew Dixon, and Neil Malone "MTF comparisons between mesa and planar focal plane detector structures", Proc. SPIE 8867, Infrared Remote Sensing and Instrumentation XXI, 88670U (19 September 2013); https://doi.org/10.1117/12.2029641

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