CONTROLLED EXCITON-PHOTON INTERACTION IN SEMICONDUCTOR BULK MICROCAVITIES

We report the first experimental investigation of the spectral respons e of a ''bulk microcavity'': a semiconductor system in which the same cavity material is the active medium. Despite the smaller oscillator s trength of the bulk exciton, a Rabi splitting even clearer than that d isplayed by usual quantum-well microcavities is observed. The splittin g increases with the cavity layer thickness and the exciton dispersion produces a satellite structure due to quantum confinement. We also sh ow that control of the exciton-photon interaction can be realized by s uitably tailoring the photonic wave function.