Electroluminescence and Photoluminescence of Microcavity Exciton-Polaritons

Microcavity exciton-polariotns, half-light and half-matter quasi-paritlces, have been studied extensively for about last two decades because the inherent nature as a mixture of cavity photons and quantum well excitons provides a unique testbed to explore fundamental nature of physics. Recently, there have been increasing efforts to build photonic devices using microcavity exciton-polaritons. An essential step toward practical devices is to establish efficient electrical pumping scheme. Here we compare optical properties of GaAs-based microcavity exciotn-polartions in terms of electrical versus optical pumping schemes, and we address a promising design of a microcavity wafer to improve electrical pumping efficiency.