Optical properties of a laterally confined semiconductor microcavity containing a single quantum well

The semiconductor microcavity with a thin oxide-aperture layer is fabricated, and linear optical transmission spectrum measured for various aperture diameters. First, the observation of bare cavity modes is demonstrated in this microstructure which is capable of confining light field three-dimensionally. Several transverse modes are observed as transmission peaks, which manifests the lateral field confinement achieved well down to 2 μm aperture diameter. And the transmission spectrum of cavity modes coupled to the excitonic resonance is measured for the same microcavity system containing a single quantum well. The result shows that each transverse mode couples to an exciton independently as it approaches the excitonic resonance frequency, giving rise to an anti-crossing behavior between coupled modes.