Optical Resonators With Variable Reflectivity Mirrors

The dominance of the fundamental mode in optical resonators with uniform reflectivity mirrors is due to the lowest diffraction loss of this mode. The power output of this mode is commonly obtained by using a partially transparent mirror. These two features could be combined in a resonator consisting of one uniform reflectivity mirror (URM) and one variable reflectivity mirror (VRM). Resonators with VRM were investigated previously. S. N. Vlasov and V. I. Talanov 1 considered symmetrical two-dimensional resonators with two types of variations of the mirror reflectivities including the gaussian and obtained solutions for the eigenvalues of the resonator integral equations. N. G. Vakhimov 2 investigated the natural resonant frequencies and field distributions of symmetrical resonators with gaussian VRM by using an asymptotic method of solution to the wave equation subject to impedance boundary conditions. N. Kumagai and others 3 investigated Fabry Perot resonators with VRM of finite dimen2349