Generalization of the Method of Scattering Matrices to Problems in Nonlinear Dispersion Media

Abstract: In recent years, much attention has been paid to integrated photonics devices based on nonlinear media. A generalization of the transfer matrix method to problems in plane-parallel layered media with quadratic and cubic nonlinearity is proposed. The incident radiation can be either a monochromatic wave or a non-monochromatic pulse. Previously, such problems could only be solved using grid methods. The proposed approaches significantly expand the range of applicability of matrix methods and are drastically superior in efficiency to the well-known grid methods. © Pleiades Publishing, Ltd. 2024. ISSN 0965-5425, Computational Mathematics and Mathematical Physics, 2024, Vol. 64, No. 7, pp. 1491–1503. Pleiades Publishing, Ltd., 2024.