Radiation of dressed excitons in the semiconductor microcavity

In this paper, we introduced the dressed exciton model of the semiconductor micro-cavity device. In the semiconductor micro cavity of vertical-cavity surface-emission device, the excitons first coupled with the cavity through an intra-electromagnetic field and formed the dressed excitons. Then these dressed excitons decayed into the vacuum cavity optical mode, as a multipa rticle process. Through the quantum electrodynamics method, the dipole emis sion density and system energy decayed equation were obtained. And it was p redicted that the excitons decay into a very narrow mode when the exciton-c avity coupling becomes strong enough.