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Proceedings Paper

Novel and simply producible large-area focal plane infrared imaging device based on quantum wells
Author(s): Hui Chun Liu; Louis B. Allard; Margaret Buchanan; Zbigniew R. Wasilewski
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Paper Abstract

We propose a new concept for long wavelength infrared imaging using a pixelless up-conversion device together with a CCD camera. The concept is applicable to wavelengths longer than the CCD response range (longer than about 1.1 micrometer). We present experimental results which support the scheme for infrared imaging. Our first device consists of a long wavelength p-type GaAs/AlGaAs quantum well infrared photodetector (QWIP) on top of which is grown a shorter wavelength InGaAs/GaAs light emitting diode (LED). Upon long wavelength infrared excitation of the QWIP, near infrared light is generated by the LED whose output is directed towards a commercial CCD camera where the up-converted image of the long wavelength infrared source object is formed.

Paper Details

Date Published: 13 August 1997
PDF: 9 pages
Proc. SPIE 3061, Infrared Technology and Applications XXIII, (13 August 1997); doi: 10.1117/12.280344
Show Author Affiliations
Hui Chun Liu, National Research Council of Canada (Canada)
Louis B. Allard, National Research Council of Canada (Canada)
Margaret Buchanan, National Research Council of Canada (Canada)
Zbigniew R. Wasilewski, National Research Council of Canada (Canada)

Published in SPIE Proceedings Vol. 3061:
Infrared Technology and Applications XXIII
Bjorn F. Andresen; Marija Strojnik, Editor(s)

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