Optical characterisation of InAs/InP quantum dot photonic cavity membranes

We present an experimental investigation of the localised optical defect modes in hexagonal symmetry, single missing hole defect, InP membrane, photonic crystal microcavities. An InAs/InP quantum dot ensemble is located at the midpoint of the InP membrane to allow characterisation of the optical modes in emission. Simple modifications to the cavity configuration are used to split the degeneracy of the orthogonally polarised x- and y-dipole cavity modes and to introduce a higher energy mode into the cavity with cavity quality factor Q up to 2,800.