Single-mode single-lobe operation of broad area AlxGa1−xAs-GaAs quantum well lasers

Abstract
A buried heterostructure broad area quantum well heterostructure AlxGa1−xAs‐GaAs laser diode modified with a small multiple stripe pattern near its center is described that operates single mode and narrow lobe (Ith) to 2Ith or 3Ith. The broad area (wide stripe) buried heterostructure laser is made by impurity‐induced layer disordering.