Spatial and spectral characteristics of spontaneous emission in microcylinder LEDs

We have numerically calculated the optical modes of cylindrical microcavity structures enclosed by the lateral boundaries with air, used the calculated values to find the spontaneous emission from strained quantum wells placed in the microcavity and examined the spectral and spatial distribution of the emitted light. We find that microcavity LEDs are capable of producing highly collimated vertical light output which, while not coherent, can be adequate for chip-to-chip interconnect systems