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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 11 — Jun. 1, 2012
  • pp: 2025–2027

Low irradiance background limited type-II superlattice MWIR M-barrier imager

Edward Kwei-wei Huang, Siamak Abdollahi Pour, Minh-Anh Hoang, Abbas Haddadi, Manijeh Razeghi, and Meimei Z. Tidrow  »View Author Affiliations


Optics Letters, Vol. 37, Issue 11, pp. 2025-2027 (2012)
http://dx.doi.org/10.1364/OL.37.002025


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Abstract

We report a type-II superlattice mid-wave infrared 320×256 imager at 81 K with the M-barrier design that achieved background limited performance (BLIP) and 99% operability. The 280 K blackbody’s photon irradiance was limited by an aperture and a band-pass filter from 3.6 μm to 3.8 μm resulting in a total flux of 5×1012ph.cm2.s1. Under these low-light conditions, and consequently the use of a 13.5 ms integration time, the imager was observed to be BLIP thanks to a 5pA dark current from the 27 μm wide pixels. The total noise was dominated by the photon flux and read-out circuit which gave the imager a noise equivalent input of 5×1010ph.cm2.s1 and temperature sensitivity of 9 mK with F/2.3 optics. Excellent imagery obtained using a 1-point correction alludes to the array’s uniform responsivity.

© 2012 Optical Society of America

OCIS Codes
(040.2480) Detectors : FLIR, forward-looking infrared
(040.5160) Detectors : Photodetectors
(110.3080) Imaging systems : Infrared imaging

ToC Category:
Imaging Systems

History
Original Manuscript: February 28, 2012
Manuscript Accepted: April 4, 2012
Published: May 30, 2012

Citation
Edward Kwei-wei Huang, Siamak Abdollahi Pour, Minh-Anh Hoang, Abbas Haddadi, Manijeh Razeghi, and Meimei Z. Tidrow, "Low irradiance background limited type-II superlattice MWIR M-barrier imager," Opt. Lett. 37, 2025-2027 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-11-2025


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References

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