Figure 3From: Micro-photoluminescence of GaAs/AlGaAs triple concentric quantum rings Left panel: Dependence on sample position of the micro-PL emission of the TCQRs. The spectra were measured at T = 15 K, λ exc = 532 nm and P exc = 5 W/cm2. The color scale is in arbitrary units. Right panel: Micro-PL spectra at positions corresponding to white lines on the scan.Back to article page