Abstract

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 8.9μm can be observed for low and high forward bias voltages, respectively. In addition, the peak at 8.9μm is sensitive to the polarization of the incoming radiation.

© 2009 Optical Society of America

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