Excitons in a II-VI semiconductor microcavity in the strong-coupling regime

Abstract

Microcavities which contain Zn-Cd-Se quantum wells as the resonant medium have been fabricated and tested at blue-green wavelengths. We see clear evidence of coupled-mode behavior at the n=1 heavy-hole exciton in both angle and temperature tuning experiments, with anticrossing (vacuum-Rabi) splittings approaching 20 meV. The exciton-cavity interaction is consistent with predictions by theory in the strong-coupling regime, and illustrates the impact of the large oscillator strength available in II-VI compounds.