Mid-infrared emission in InxGa1−xAs/GaAs T-shaped quantum wire lasers and its indium composition dependence

In this work, the emission wavelength has been extended out to 1.3, 1.5, and 2.2 μm for InxGa1−xAs/GaAs T-shaped quantum wire (TQWR) using multi-band k.p model and variational formalism. We have investigated the impact of the indium composition on the performance of a series of TQWR through a calculation of the optical gain and transition energies. It is found that the optical gain and the emission wavelength are more influenced taking into account the effect of the indium concentration and persisted up at room temperature (RT). The results could open the way to the development of laser communication systems operating at long wavelengths and fabricated from TQWRs structure.