Maluenda Niubó, DavidSáiz Martínez, David2026-02-182026-02-182026-01https://hdl.handle.net/2445/227014Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2026, Tutor: David Maluenda NiubóThis work presents the development of a versatile numerical code for the simulation and polarization analysis of tightly focused vector beams in high numerical aperture optical systems. The computational framework is based on the Richards-Wolf vectorial diffraction formalism, which enables the rigorous calculation of the full three-dimensional electromagnetic field in the focal region, including non-negligible longitudinal components. The code implements a modular pipeline that defines the incident field, performs its projection onto the reference sphere, evaluates the focusing integral and characterizes the local polarization state using a three-dimensional generalization of the Stokes parameters. This approach overcomes the limitations of the conventional transverse Stokes formalism and provides a complete local description of polarization in nonparaxial fields. Numerical simulations and advanced visualization tools are used to analyze complex polarization structures, demonstrating the potential of the developed framework as a flexible platform for the study of nonparaxial optical phenomena.6 p.application/pdfengcc-by-nc-nd (c) Sáiz, 2026http://creativecommons.org/licenses/by-nc-nd/4.0/Polarització (Física nuclear)Simulació per ordinadorTreballs de fi de grauPolarization (Nuclear physics)Computer simulationBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess