Modelling Purcell effect mediated by metasurfaces with spectral parameters

Abstract

Empirically measuring the Purcell factor, which represents the maximum enhancement to spontaneous emission in an optical cavity, is straightforward as the photoluminescence enhancement (PLE) can be determined directly by comparing the luminescence intensity with and without the cavity. However, predicting the Purcell factor have been proven to be tricky. In particular, the effective modal volume is difficult to analyze empirically, especially for non-Hermitian systems which includes open resonators and systems with dissipative materials [1].