Abstract
We propose and demonstrate a 1.5-µm-GaInAsP/AlInAs microcylinder laser which improves the fragility of the microdisk laser. The threshold current density was comparable to that reported for the 0.98-µm-GaInAs microcylinder laser. The selective oxidation of the AlInAs claddings will further reduce the threshold by strong optical confinement in the disk like structure and will simplify the large-scale integration of this type of device.
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