Magneto-optical polarisation texturing
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910803647528960 |
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| author | Koksal, Koray Tambag, Fatma Berakdar, Jamal Babiker, Mohamed |
| author_facet | Koksal, Koray Tambag, Fatma Berakdar, Jamal Babiker, Mohamed |
| contents | Left and right circularly polarized transverse electromagnetic waves propagate at slightly different speeds in a magnetic material leading to a polarization rotation by an amount proportional to the projection of the magnetic field along the direction of the wave propagation. We show how this magneto-optical effect can serve as a vectorial polarization shaper if the input mode is either a radially-polarised or an azimuthally-polarised Laguerre-Gaussian (LG) mode. The specific polarization map of the output field can be achieved by choosing appropriately the magnetic material and/or its geometry. We show further that when the LG beam waist is comparable to the wavelength the fields are no longer purely transverse but acquire an additional longitudinal (axial) component. We demonstrate how this modifies the polarisation texturing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_17480 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magneto-optical polarisation texturing Koksal, Koray Tambag, Fatma Berakdar, Jamal Babiker, Mohamed Optics Applied Physics Left and right circularly polarized transverse electromagnetic waves propagate at slightly different speeds in a magnetic material leading to a polarization rotation by an amount proportional to the projection of the magnetic field along the direction of the wave propagation. We show how this magneto-optical effect can serve as a vectorial polarization shaper if the input mode is either a radially-polarised or an azimuthally-polarised Laguerre-Gaussian (LG) mode. The specific polarization map of the output field can be achieved by choosing appropriately the magnetic material and/or its geometry. We show further that when the LG beam waist is comparable to the wavelength the fields are no longer purely transverse but acquire an additional longitudinal (axial) component. We demonstrate how this modifies the polarisation texturing. |
| title | Magneto-optical polarisation texturing |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2501.17480 |