Fabrication and Optical Properties of a Fully-Hybrid Epitaxial ZnO-Based Microcavity in the Strong-Coupling Regime

Abstract

In order to achieve polariton lasing at room temperature, a new fabrication\nmethodology for planar microcavities is proposed: a ZnO-based microcavity in\nwhich the active region is epitaxially grown on an AlGaN/AlN/Si substrate and\nin which two dielectric mirrors are used. This approach allows as to\nsimultaneously obtain a high-quality active layer together with a high photonic\nconfinement as demonstrated through macro-, and micro-photoluminescence\n({\\mu}-PL) and reflectivity experiments. A quality factor of 675 and a maximum\nPL emission at k=0 are evidenced thanks to {\\mu}-PL, revealing an efficient\npolaritonic relaxation even at low excitation power.\n