Ultra-low power HOT MCT grown by MOVPE for handheld applications

Luke Pillans; Ian Baker; R. Kennedy McEwen

doi:10.1117/12.2050327

24 June 2014 Ultra-low power HOT MCT grown by MOVPE for handheld applications

Luke Pillans, Ian Baker, R. Kennedy McEwen

Proceedings Volume 9070, Infrared Technology and Applications XL; 90701E (2014) https://doi.org/10.1117/12.2050327
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

In 2012 Selex ES demonstrated High Operating Temperature (HOT) MCT detectors with 5μm cut-off wavelength and f/4 aperture operating at temperatures above 200K. These detectors are grown by Metal Organic Vapour Phase Epitaxy (MOVPE) which enables fine control over the photo-diode structure. Since 2012 Selex has created two further generations of MOVPE HOT MCT, progressively improving operability and yield. This paper presents performance data for Selex’s third generation of HOT MCT technology and describes the improvements to the diode design and materials processing that have enabled these advances. A parallel program has developed miniature Dewars with lower heatload and reduced manufacturing costs. When integrated with the latest generation of miniature linear cryo-engines the required cooler power is reduced to the region of 1W at temperatures of 200K. This paper will present example imagery from a detector operating with <1 Watt cooler input power. The combination of third generation HOT MCT, high efficiency Dewars and miniature linear coolers will allow a drastic reduction in SWAP-C for long range hand-held thermal imagers.

Citation Download Citation

Luke Pillans, Ian Baker, and R. Kennedy McEwen "Ultra-low power HOT MCT grown by MOVPE for handheld applications", Proc. SPIE 9070, Infrared Technology and Applications XL, 90701E (24 June 2014); https://doi.org/10.1117/12.2050327

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