Figure 1

Cross-sectional TEM image of a 20-period AlGaN/AlInN/AlInGaN DBR grown on the Al0.5Ga0.5N template. The inset shows a magnified image of the periodical AlGaN/AlInN/AlGaInN tri-layer structure.
Cross-sectional TEM image of a 20-period AlGaN/AlInN/AlInGaN DBR grown on the Al0.5Ga0.5N template. The inset shows a magnified image of the periodical AlGaN/AlInN/AlGaInN tri-layer structure.