Articles you may be interested inArF laser-based quantum well intermixing in InGaAs/InGaAsP heterostructures Appl. Phys. Lett. 93, 071106 (2008); 10.1063/1.2969063Effect of elastic strain redistribution on electronic band structures of compressively strained GaInAsP/InP membrane quantum wiresThe effects of thermal annealing for In 0.25 Ga 0.75 As 1−y N y / GaAs multiquantum wells ͑MQWs͒ have been investigated through thermally detected optical absorption. The QW transition energies have been calculated by using a ten-band k − p model including the band anticrossing model for the description of the InGaAsN band gap variation. The modification of the In concentration profile due to In-Ga interdiffusion during thermal annealing is taken into account through the Fick law. A good agreement is obtained between calculated and experimental energies of optical transitions. Our results show that the In-Ga interdiffusion phenomenon observed in a nitrogen free sample is moderately enhanced by the introduction of nitrogen. The blueshift of optical transitions induced by the annealing process is the result of both In-Ga interdiffusion and rearrangement of local nitrogen environment.