Schneider, H.H.SchneiderSchönbein, C.C.SchönbeinKoidl, P.P.KoidlWeimann, G.G.Weimann2022-03-032022-03-031999https://publica.fraunhofer.de/handle/publica/19466810.1063/1.123119Standing light waves caused by the interference of incident and reflected beams lead to a spatial modulation of the electromagnetic field within the active region of a quantum well infrared photodetector (QWIP). The optical excitation-determined by the electric field component perpendicular to the quantum well plane-is thus inhomogeneous, influencing the QWIP responsivity and its voltage dependence. The inhomogeneity can be suppressed by using mesa photodetectors where only half of the top contact is covered with metal.enGaAs/AlGaAsinterferenceInterferenzquantum well infrared photodetectorQWIP621667journal article