Fig. 2From: Interface Intermixing in Type II InAs/GaInAsSb Quantum Wells Designed for Active Regions of Mid-Infrared-Emitting Interband Cascade LasersRoom temperature photoluminescence (red lines—left part) and photoreflectance (blue lines—right part) spectra of ground state type II “W”-shaped quantum well transitions measured for sample A (a) and sample B (b). Dotted lines show the expected spectra at the calculated nominal transition energyBack to article page