Mid-IR resonant cavity detectors

Resonant cavity detectors based on III-V materials have been designed, grown entirely by molecular beam epitaxy, fabricated, and tested. They offer a low noise (dark current densities of 0.4 mA/cm(2) were measured at 298 K, close to the predicted value of 0.31 mA/cm(2)), narrow response detector (full width at half maximum of 57 nm in GaSb and 45 nm in InAs) in the mid-infrared region, with future applications in spectroscopy, gas sensing, and optical communications. (C) 2017 American Vacuum Society.