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Treball de fi de grau

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cc-by-nc-nd (c) Ivern, 2026
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/226854

Modified Gerchberg–Saxton algorithm to generate vector beams

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Resum

This study focuses on improving a modified Gerchberg-Saxton (GS) algorithm to generate vector beams under strong focusing conditions. The main goal is to solve the instability problems that happen when the beam waist is very small, where standard methods usually fail. To achieve this, we introduced a regularization strategy using separate relaxation parameters for amplitude and phase to independently smooth the iterative process. After testing some combinations, our results show that by adjusting these parameters, either the intensity or the polarization distribution can be better reconstructed. Therefore, fidelity parameters for both magnitudes are defined to monitor their evolution during the iterative process for each combination and to evaluate the optimal trade-off.

Descripció

Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2026, Tutor: David Maluenda Niubó

Citació

Citació

IVERN PONCE DE LEÓN, Júlia. Modified Gerchberg–Saxton algorithm to generate vector beams. [consulta: 22 de febrer de 2026]. [Disponible a: https://hdl.handle.net/2445/226854]

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