Operation of nonlinear GaAs/AlGaAs multiple quantum well microresonators fabricated using alloy-mixing techniques

We report for the first time the fabrication and the operation of GaAs/AlGaAs multiple quantum well nonlinear microresonators employing defect-induced alloy-mixing techniques. A uniform array of 5-μm square microresonators shows a hysteresis behavior in the reflection mode and in a quasi-continuous regime. We demonstrate that the pixellation indeed improves the nonlinear properties of the structures.