GaInAsP Microcylinder (Microdisk) Injection Laser with AlInAs(O_x) Claddings

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.