Simulation of a ridge-type semiconductor laser with selective double-sided anti-guiding and partially undoped cladding layers
A ridge-type semiconductor laser with selective double-sided anti-guiding and partially undoped cladding layers is proposed, and lasing characteristics are simulated. With increases in the height and width of the selective double-sided anti-guiding layers, both kink-level and threshold current increase. With an increase in the thickness of the partially undoped cladding layers, the kink-level increases. There is an optimum value for the thickness of the partially undoped cladding layers to minimize the threshold current with maintaining kink-free operation. The lowest threshold current for kink-free operation is 46.1 mA, which is much lower than the previous lowest value of 57.0 mA.
semiconductor laser kink horizontal transverse mode