Random inhomogeneities in microresonator: Theory and modeling at millimeter wave band

The influence of random inhomogeneities placed on the microresonator face on its spectral properties was studied theoretically and experimentally. The original spectral theory of open dielectric disk resonator with random surface inhomogeneities was elaborated. The mechanisms of the influence of inhomogeneities on eigen resonant frequency and on the spectral lines width were clarified. For that we carried out the modeling of the microresonator with random surface inhomogeneities at millimeter wave band. The qualitative agreement between theory and experiment was obtained.