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Brief Communications

Selection of the principal transverse mode in a ring resonator

I. M. Korzhenevich, A. M. Ratner, V. S. Solov'ev


Abstract: It is shown that the caustic surface which forms the boundary of a transverse mode with indices q and r has a rectangular cross section if the resonator is of the ring type. Expressions are derived for the determination of the dimensions of a rectangular-aperture diaphragm which can be used to select the principal mode and suppress higher modes in various ring resonators.

UDC: 621.378.001

PACS: 42.60.Da, 42.79.Bh

Received: 01.06.1971

 English version: Soviet Journal of Quantum Electronics, 1972, 1:6, 637–639