Quasi-optical open resonator for millimetric and submillimetric electromagnetic waves

摘要

This resonator has two concave mirrors (1, 2) with an approximately spherical surface and placed opposite each other. To favour formation of a single required TEMoop mode against TEMooq modes, with q = p + 1, p + 2, ..., in the resonator, the concave mirrors (1, 2) each have at least two mirror surfaces (1.1, 1.2 or 2.1, 2.2) offset stepwise with respect to each other by one or more integral multiples of the half wavelength lambda p/2 of the required TEMoop mode. IMAGE