2026-04-17T03:15:42Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1183642025-11-19T11:00:30Zcom_2072_1057col_2072_478821col_2072_478917

00925njm 22002777a 4500 dc Maluenda Niubó, David author Martínez-Herrero, Rosario author Juvells Prades, Ignacio author Carnicer González, Arturo author 2017-12-01T09:17:05Z 2017-12-01T09:17:05Z 2014-03-17 2017-12-01T09:17:05Z We develop a method for generating focused vector beams with circular polarization at any transverse plane. Based on the Richards-Wolf vector model, we derive analytical expressions to describe the propagation of these set of beams near the focal area. Since the polarization and the amplitude of the input beam are not uniform, an interferometric system capable of generating spatially-variant polarized beams has to be used. In particular, this wavefront is manipulated by means of spatial light modulators displaying computer generated holograms and subsequently focused using a high numerical aperture objective lens. Experimental results using a NA=0.85 system are provided: irradiance and Stokes images of the focused field at different planes near the focal plane are presented and compared with those obtained by numerical simulation. Holografia Làsers Lents Difracció Polarització (Llum) Camps electromagnètics Holography Lasers Lenses Diffraction Polarization (Light) Electromagnetic fields Synthesis of highly focused fields with circular polarization at any transverse plane