In focus of this work are the so-called whispering gallery mode microresonators. These devices allow concentration and storage of light within highly confined volumes. The occurring energy densities are the basis of an effective interaction between the light field and its environment. Due to the extreme quality factors and necessary compactness of such systems, highly precise resonance tuning is required. Therefore, in this work microresonators based on various material systems are particularly examined for their tuning abilities.
In addition to the resonators, highly efficient coupling mechanisms for the excitation and readout of these structures are necessary for the later use of such systems. Therefore, precise resonator adapted waveguide designs are also required. In this work, novel silica- and polymer-based waveguide designs were developed and examined for their optical properties. For these two systems, waveguide creation and quantum optical applicability is successfully demonstrated. Plasmonic waveguides and alternative waveguide designs based on nitrides offer further interesting possibilities for quantum optics experiments. Besides these two waveguide designs, in this work also a corresponding coupler design is presented and investigated.
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