21 May 2014 InAsSb detector and FPA data and analysis
Author Affiliations +
Abstract
InAsSb material with a cutoff wavelength in the 5 μm range has been grown on GaAs substrates. The MWIR InAsSb detector arrays were fabricated and hybridized to fanouts and ROICs to permit measurement of the electrical and optical properties of detectors. Detector arrays were fabricated in a 1024 x 1024 format on an 18 μm pitch. A fanout was utilized to directly acquire data from a set of selected detectors without an intervening read out integrating circuit (ROIC). Variable temperature Jdark vs Vd measurements have been made with the dark current density ~ 10-5 A/cm2 at 150 K. The external QE measured using a narrow band filter centered at ~ 4 μm had values in the 65 - 70 % range. Since the detectors were illuminated through a GaAs substrate which has a reflectance of 29%, the internal QE is greater than 90 %. A 1024 x 1024 ROIC on an 18 μm pitch was also designed and fabricated to interface with the barrier detectors. The ROIC operates at 30 Hz frame rate and has a well capacity of 20.7 M electrons. QE at 150 K for a 1024 x 1024 detector array hybridized to a ROIC had a median D* at 150 K under a flux of 1.07 x 1015 ph/(cm2/s was 1.2 x 1011 cm Hz1/2 /W. The NEdT was 44 mK and imagery was obtained at 150 K using an f/2.3 MWIR lens.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. I. D'Souza, E. Robinson, A. C. Ionescu, D. Okerlund, T. J. De Lyon, R. D. Rajavel, H. Sharifi, N. K. Dhar, P. S. Wijewarnasuriya, C. Grein, "InAsSb detector and FPA data and analysis", Proc. SPIE 9100, Image Sensing Technologies: Materials, Devices, Systems, and Applications, 91000B (21 May 2014); doi: 10.1117/12.2058150; https://doi.org/10.1117/12.2058150
PROCEEDINGS
9 PAGES


SHARE
RELATED CONTENT

MWIR InAsSb FPA data and analysis
Proceedings of SPIE (October 07 2014)
MWIR InAsSb barrier detector data and analysis
Proceedings of SPIE (June 18 2013)
Proton radiation experimental results on a III V nBn mid...
Proceedings of SPIE (September 26 2016)
SWIR to LWIR HDVIP HgCdTe detector array performance
Proceedings of SPIE (May 18 2006)
State-of-the-art HgCdTe infrared devices
Proceedings of SPIE (April 13 2000)

Back to Top