Enhanced spontaneous emission using quantum dots and an apertured microcavity

Spontaneous emission characteristics from apertured microcavities are studi ed using quantum-dot light emitters. Spatial averaging over the emitter pos itions within the apertures significantly impacts the measured lifetime cha nges, but lifetime changes due to the aperture modes are still readily obse rved. A maximum increase of a factor of similar to 2.5 over the cavity-free emission rate is measured. We argue that, for a narrow bandwidth emitter, the microcavity enhancement ran lead to nearly-single-mode and high-speed o peration even in the spontaneous regime.