Formation of super-Gaussian fields in open two-mirror resonators

The characteristics of excitation of oscillations in the open resonator (OR) with super-Gaussian fields, as a resonant system of diffraction radiation oscillator (DRO) in THz have been considered. The results of theoretical researches of the spectral distribution and the structure of fields in two-dimensional OR and experimental evidence of modes of excitation in three-dimensional OR with super-Gaussian fields are shown.