Enhancement of magneto-optical effects by a single 1D all dielectric resonant grating
Abstract
We demonstrate theoretically the enhancement of the four first-order magneto-optical effects using an all-dielectric 1D resonant grating. The modeled structure was designed for the Faraday effect at normal incidence at a wavelength of 1.55 µm for which the calculated improvement is shown to be one hundred times the off-resonance values. At 1° incidence, polar and longitudinal Kerr effects were also improved, showing polarization rotations up to 14°. For the same incidence conditions, transverse magneto optical Kerr effect was also improved, leading to a reflectance difference of 12% for a reflectance intensity of 40%. These results are interesting for the development of magnetic-field sensors capable of detecting of several components of the field.
- Publication:
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Journal of Physics D Applied Physics
- Pub Date:
- December 2017
- DOI:
- 10.1088/1361-6463/aa949e
- Bibcode:
- 2017JPhD...50W5105G