Electric Field Distribution of an Optical Nanocavity Embedded with a Single Molecule

Using state-of-the-art quantum mechanical calculations, we investigate the spatial profile of the electric field enhancements induced within an optical cavity embedded with a variety of organic molecules. We observed marked differences in the spectral positions, spectral intensities, maximum achievable electric field, and spatial profile of the electric field with a remarkable sensitivity to the embedded molecular type. In a broader perspective, our quantum mechanical calculations provide quantitative access to the molecule-dependent electric field distributions and unveil intricate and rich optical features.