DESIGN AND COMPARISON OF STRAINED-LAYER QUANTUM-WELL WITH FIXED WAVELENGTH
固定波长变量子阱的设计与比较

The strained-layer quantum-wells with the same wavelength have been compared in this paper.The larger the compressive strain and the narrower the well make the valence band structure more ideal.Under the tensile strain,mainly because the dipole matrix element between e-lh is larger than that between e-hh,and the larger DOS,differential gain in tensile strained QWs is much larger than that in compressive strained QWs and lattice-matched QWs.Under certain tensile strain,there exists an optimum well width.