Model of a Rectangular Waveguide Laser Resonator with Mirrors of Arbitrary Radius of Curvature

The authors developed a multimode model of a rectangular waveguide laser resonator with mirrors of arbitrary radius of curvature; this model makes it possible to take into account the influence of intracavity elements and the quality of the electrode surface on the optical loss of normal modes in the system. Results of calculation within the framework of the model developed are in good agreement with the data of measurements of the optical loss carried out using a scanning interferometer of the middle IR range.