Optical-field profiles in InxGa1− xN-MQW laser structures
In this paper, we calculated the optical fields for InxGa1− xN-multiquantum well (MQW) laser
structures. Two different optical cavities are compared, the conventional step separate
confinement heterostructure (Step) and a graded-index (GRIN) structure with a parabolic
variation of the Al content in the AlxGa1− xN guide layers. A comparison is made regarding
the confinement factor, near-and far-field patterns. An anomalous behavior for the
confinement factor is observed in the structure, and it can be eliminated by choosing an …
structures. Two different optical cavities are compared, the conventional step separate
confinement heterostructure (Step) and a graded-index (GRIN) structure with a parabolic
variation of the Al content in the AlxGa1− xN guide layers. A comparison is made regarding
the confinement factor, near-and far-field patterns. An anomalous behavior for the
confinement factor is observed in the structure, and it can be eliminated by choosing an …
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