Calculation of Multilayer Slab Waveguide Structures

This MATLAB routine provides comprehensive computational capabilities for analyzing multilayer slab waveguide structures. A slab waveguide configuration typically consists of a plasma layer sandwiched between two dielectric media. The core implementation in slabexec employs numerical methods such as the transfer matrix method or finite difference approach to solve the wave equation across multiple layers. Key computational features include calculation of effective refractive indices using root-finding algorithms like Newton-Raphson method, determination of optical field distributions through eigenmode solving techniques, and far-field pattern generation via Fourier transform-based propagation algorithms. The README documentation contains detailed explanations of input parameters, boundary condition handling, and convergence criteria for the numerical solvers. This computational framework enables researchers to characterize material properties, analyze mode confinement effects, and optimize waveguide design parameters for various photonic applications.