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We report the optical properties of single defects in inverse three-dimensional (3D) rod-connected diamond (RCD) photonic crystal (PhC) cavities by using plane-wave expansion (PWE) and finite-difference time domain (FDTD) methods. By optimizing the dimensions of a 3D inverse RCD PhC, wide photonic band gaps (PBG) are obtained. Optical cavities with resonances in the bandgap arise when point defects...
We use focused ion beam (FIB) etching to create suspended photonic crystal cavities in diamond. Our goal is to enhance and control the spontaneous emission of single N-V colour centres, which act like single `two-level atoms' emitting single photons. The single nitrogen-vacancy (N-V) colour centre in diamond has attracted a lot of interest because it can be optically addressed, is photostable at room...
Enhancement of spontaneous emission is of crucial importance in the design of high efficiency single photon sources. This can be achieved by creating defect cavities with both high Q and small effective mode volume, which results in a high Purcell factor. Photonic crystal (PhC) microcavities are very promising candidates in this area and this work is using 3D finite difference time domain modelling...
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