Normal incidence detection of ultraviolet, visible, and mid-infrared radiation in a single GaAs/AlGaAs device

A GaAs/AlGaAs detector is demonstrated showing multiple detection capabilities. This detector exhibits a broad spectral response in the 200-870 nm (ultraviolet-visible) range for forward bias and in the 590-870 nm (visible) range for reverse bias. In the mid-IR region, two peaks at 5 and 8.9 microm...

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Published inOptics letters Vol. 34; no. 13; p. 2036
Main Authors Ariyawansa, G, Jayaweera, P V V, Perera, A G U, Matsik, S G, Buchanan, M, Wasilewski, Z R, Liu, H C
Format Journal Article
LanguageEnglish
Published United States 01.07.2009
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Summary:A GaAs/AlGaAs detector is demonstrated showing multiple detection capabilities. This detector exhibits a broad spectral response in the 200-870 nm (ultraviolet-visible) range for forward bias and in the 590-870 nm (visible) range for reverse bias. In the mid-IR region, two peaks at 5 and 8.9 microm can be observed for low and high forward bias voltages, respectively. In addition, the peak at 8.9 microm is sensitive to the polarization of the incoming radiation.
ISSN:0146-9592
DOI:10.1364/OL.34.002036