Abstract
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-polarized or an azimuthally-polarized 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 (i.e. (Formula presented.)) the fields are no longer purely transverse but acquire an additional longitudinal (axial) component. We demonstrate how this modifies the polarization texturing.
| Original language | English |
|---|---|
| Pages (from-to) | 726-734 |
| Number of pages | 9 |
| Journal | Journal of Modern Optics |
| Volume | 71 |
| Issue number | 19-21 |
| DOIs | |
| Publication status | Published - 12 Jan 2025 |
Bibliographical note
Publisher Copyright:© 2025 Informa UK Limited, trading as Taylor & Francis Group.
Keywords
- Faraday effect
- magneto-optical effect
- optical vortices
- polarization texturing