Publicação
Goos-Hänchen and Imbert-Federov shifts of vortex beams near critical incidence
| Resumo: | Abstract: We investigate the Goos-Hanchen and Imbert-Federov shifts of linearly polarized vortex beams undergoing internal reflection in a glass prism in the critical region of incidence. Beam shifts are numerically calculated based on a wavenumber-space representation. The influences of the beam's topological charge, angle of incidence, and propagation distance on the beam shifts are investigated. We find that in the critical region, the Goos-Hanchen and Imbert-Federov shifts are coupled by the vortex beam's orbital angular momentum. While the Goos-Hanchen increases with propagation distance, the Imbert-Federov shift is invariant with propagation. We show that both shifts exhibit a dependence on the beam's topological charge beyond a simple linear proportionality |
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| Autores principais: | Araujo, Luís Eduardo Evangelista de, 1971- |
| Assunto: | Ótica geométrica Multiplexação por divisão de comprimento de onda Polarização (Luz) Geometrical optics Wavelength division multiplexing Polarization (Light) Artigo original |
| Ano: | 2021 |
| País: | Brasil |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | IBICT |
| Idioma: | inglês |
| Origem: | Oasisbr |
| Resumo: | Abstract: We investigate the Goos-Hanchen and Imbert-Federov shifts of linearly polarized vortex beams undergoing internal reflection in a glass prism in the critical region of incidence. Beam shifts are numerically calculated based on a wavenumber-space representation. The influences of the beam's topological charge, angle of incidence, and propagation distance on the beam shifts are investigated. We find that in the critical region, the Goos-Hanchen and Imbert-Federov shifts are coupled by the vortex beam's orbital angular momentum. While the Goos-Hanchen increases with propagation distance, the Imbert-Federov shift is invariant with propagation. We show that both shifts exhibit a dependence on the beam's topological charge beyond a simple linear proportionality |
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