Peculiarities of the excitation of whispering gallery waves in the hemispherical dielectric resonator

The carried out investigations of the whispering gallery mode fields in a hemisphere by a local radiant arranged on a mirror and, not having central symmetry, have shown an opportunity of preferred excitation of waves of one type E or H. It allows a little to rarefy a spectrum of excited oscillations, having restricted one of the modes, and more effectively to use a resonance-frequency behaviour of a hemisphere as resonant system.