Fig 5From: ZnO-Based Microcavities Sculpted by Focus Ion Beam MillingThe WGM mode numbers for the lasing spectra and corresponding refractive indices for a circular, b square, c pentagonal TE and TM mode, and d quasi-WGM and WGM in hexagonal shape ZnO MCs. Numbers in the subfigures are mode numbers of WGM calculated from the by Eqs. (1)-(5)Back to article page