2 papers
math-ph2026
Exact versus tight-binding models in longitudinally modulated -symmetric coupled waveguides
Alonso Contreras-Astorga, José Israel Galindo-Rodríguez
The tight-binding (TB) model is a widely adopted approximation scheme for describing light propagation in waveguide arrays. Despite its success, its validity in -symm…
physics.optics2021
Wavefronts, light rays and caustic associated with the refraction of a plane wave by a conospherical lens
José Israel Galindo-Rodríguez, Gilberto Silva-Ortigoza
The aim of the present work is to introduce a lens whose faces are a conical surface and a spherical surface. We illuminate this lens by a plane wavefront and its associated refrac…