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Scanning electron microscopy micrographs of a silica microdisk.
Micro-PL measurements of a diameter on silica microdisk. The signal is measured above the pedestal (a), in the middle of undercut silica (b), and on the very edge of the microdisk (c). The inset shows the localization off the laser excitation spot for each spectrum.
Comparison between (a) PL spectra from the edge of the disk normalized by the PL spectra of a single layer of SRO, and (b) two-dimensional FDTD simulation of diameter microdisk spectrum, using the effective index approximation.
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