Fano resonances and photoluminescence in self-assembled high-quality-factor microbottle resonators

We demonstrate self-assembly of microbottle resonators (MBRs) that support high-quality-factor (high-Q) whispering gallery modes (WGMs). Polymethyl methacrylate (PMMA), a transparent organic polymer, has been used for the self-assembly. Active MBRs have been created by doping PMMA with laser dye rhodamine 6G. WGM-modulated photoluminescence has been observed from the active MBRs. The self-assembled passive MBRs show Q-factors of the order of 106. Fano- A nd electromagnetically induced transparency-type resonances have been observed in the transmission spectra.