InAs&#x002F;InAsSb Type-II Superlattice Mid-Wavelength Infrared Focal Plane Array With Significantly Higher Operating Temperature Than InSb

David Z. Ting; Sir B. Rafol; Sam A. Keo; Jean Nguyen; Arezou Khoshakhlagh; Alexander Soibel; Linda Hoglund; Anita M. Fisher; Edward M. Luong; Jason M. Mumolo; John K. Liu; Sarath D. Gunapala

doi:10.1109/JPHOT.2018.2877632

IEEE Photonics Journal (Jan 2018)

InAs/InAsSb Type-II Superlattice Mid-Wavelength Infrared Focal Plane Array With Significantly Higher Operating Temperature Than InSb

David Z. Ting,
Sir B. Rafol,
Sam A. Keo,
Jean Nguyen,
Arezou Khoshakhlagh,
Alexander Soibel,
Linda Hoglund,
Anita M. Fisher,
Edward M. Luong,
Jason M. Mumolo,
John K. Liu,
Sarath D. Gunapala

Affiliations

David Z. Ting: ORCiD; NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Sir B. Rafol: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Sam A. Keo: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Jean Nguyen: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Arezou Khoshakhlagh: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Alexander Soibel: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Linda Hoglund: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Anita M. Fisher: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Edward M. Luong: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Jason M. Mumolo: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
John K. Liu: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Sarath D. Gunapala: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA

DOI: https://doi.org/10.1109/JPHOT.2018.2877632
Journal volume & issue: Vol. 10, no. 6
pp. 1 – 6

Abstract

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We report focal plane array (FPA) results on a mid-wavelength InAs/InAsSb type-II strained layer superlattice (T2SLS) unipolar barrier infrared detector with a cutoff wavelength of 5.4 μm. For 300 K background in the 3-5-μm band, f/2 aperture, an FPA operating at 150 K exhibits a mean noise equivalent differential temperature (NEDT) of 18.5 mK, and an NEDT operability of 99.7%. The NEΔT distribution has a width of 8 mK, with no noticeable distribution tail, indicating excellent uniformity. The mean noise-equivalent irradiance is 9.1 × 1011 photons/sec-cm2. The mean quantum efficiency is 49.1% without antireflection coating, and the mean specific detectivity (D*) is 2.53 × 1011 cm-Hz½/W. Benefitting from an absorber material with a much longer Shockley-Read-Hall minority carrier lifetime, and a device architecture that suppresses generation-recombination and surface-leakage dark current, the InAs/InAsSb T2SLS barrier infrared detector FPA has demonstrated a significantly higher operating temperature than the mid-wavelength infrared market-leading InSb.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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