Leidinger, MarkusMarkusLeidingerBuse, KarstenKarstenBuseBreunig, IngoIngoBreunig2022-03-122022-03-122015https://publica.fraunhofer.de/handle/publica/389064enlithium niobatewhispering gallery resonators621Impurity limitations of the quality factor of whispering gallery resonators made of lithium niobateconference paper