Controllable enhancement of spontaneous emission in perpendicular direction by single quantum well embedded in planar microcavities

Based on the cavity quantum electrodynamics, the controllable enhancement of spontaneous emission in perpendicular direction by single quantum well embedded in a planar micro-cavity has been studied. The spontaneous emission spectra are obtained for different mirror reflectivity and cavity length when the carrier density is fixed. The results show that the spontaneous emission intensity can be enhanced by increasing the mirror reflectivity when radiation wavelength is about two times of the cavity length. The spectra can be changed by the micro- cavity structure and the quantum well parameters.