Optical Spectra and Output Coupling Engineering in Hybrid WG-Mode Micro- and Meso-scale Cavity Structures

Based on previously developed accurate and efficient Muller boundary integral equations (MBIEs) algorithms, we review known and explore news ways of controlled manipulation of whispering-gallery modes in meso-scale hybrid cavity structures, enabling fine tuning of their optical spectra and emission characteristics. Proposed novel structures include photonic molecules (PMs) composed of both identical and microcavities with significant size disorder, photonic-crystal assisted microdisk resonators, and hybrid structures consisting of coupled optical microcavities and surface-plasmon nano-cavities. These structures can be engineered to achieve (quasi) single-mode operation, highly directional light output, and ability to out-couple light and squeeze it in "hot spots" outside the cavities