Semiclassical theory of coupled lasers

Abstract

A semiclassical theory is developed for a coupled-resonator phased laser array. This theory, which is based on an expansion of the laser field in terms of the composite coupled-resonator modes, is valid for all values of coupling and for any number of lasers in the array. The derivation of the composite resonator modes is presented. We found that an expansion of the laser field in terms of these modes leads to laser-amplitude and -frequency-determining equations that have a similar form to those of a multimode single-resonator laser.