ABSTRACT
Temperature dependent photoluminescencc has been used to compare the cavity-polariton splitting in two nncrocavity structures. The first structure uses conventional semiconductor GaAs/AlAs mirrors, while the second structure utilises higher contrast selectively oxidised AlAs/GaAs mirrors. Enhanced room temperature splitting is observed for the oxide-based mirror structure, which is described by a greater than sevenfold reduction in the penetration length of light into the higher contrast mirrors. This significantly reduces the effective size of the microcavitv and increases the exciton-photon coupling in the oxide-based structure.
