ANALYSIS OF CORRUGATED QUANTUM-WELL STRUCTURES FOR LASER APPLICATIONS

Ultrathin active layers with quantum well (QW) depth and/or width modu lation in one or two lateral directions are considered. It is shown th at modulation leads to a modification in the density of state (DOS) di stribution and, hence is involved in working optical transitions. Such features of corrugated QW (CQW) can be suitable in laser structures f or reducing the threshold carrier concentration, increasing the T0 par ameter and stabilising the operation wavelength compared to ordinary q uantum well structures. An advantage of these profiled QWs is the oppo rtunity to use suitable properties of 1D and 0D objects without actual ly making these microstructures, but only profiling the planar QW.