Long-wavelength GaAs/AlAs distributed Bragg reflectorsfor use in GaSb-basedresonant cavity detectors

Abstract
Two GaAs/AlAs Bragg reflector stacks were designed for operation at 1.68 µm and 2.2 µm to be used in resonant cavity photodetectors. The mirrors were grown by solid source MBE, and measured reflectivities were in excess of 95 and 85%, respectively.