Parametric characterization of the spatial structure of non-uniformly polarized laser beams
We present an approach for describing the spatial structure of partially polarized light fields. Unlike the treatments usually encountered in the literature, in which the polarization state is represented by position-dependent functions, the formalism shown here characterizes the polarization by mea...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2002 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/58818 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/58818 |
| Access Level: | acceso abierto |
| Palabra clave: | 535 Partially Coherent Beams Schell-Model Beams Electromagnetic Beams Quality Degradation Gaussian Beams Phase Plates Birefringent Elements Semiconductor-Laser Kurtosis Parameter Maxwells Equations Óptica (Física) 2209.19 Óptica Física |
| Sumario: | We present an approach for describing the spatial structure of partially polarized light fields. Unlike the treatments usually encountered in the literature, in which the polarization state is represented by position-dependent functions, the formalism shown here characterizes the polarization by means of a family of measurable overall parameters averaged over the transverse spatial region where the beam intensity reaches significant values. Generalized degrees of polarization are introduced to evaluate the uniformity of the spatial distribution of the polarization state of the beam-like field. The possibility of improvement and optimization of the quality of a polarized laser beam (understood as the general usefulness of such field for collimation and focussing) is analyzed by employing first-order optical systems. Finally, attention is briefly devoted to non-paraxial electromagnetic vector beams, whose Parametric description of their polarization properties constitutes, at present, a challenge for theoreticians. |
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