Photonic band structure enables understanding how confined electromagnetic modes propagate within a photonic crystal. In photonic crystals that incorporate magnetic elements, such confined and resonant optical modes are accompanied by enhanced and modified magneto-optical activity. We describe a measurement procedure to extract the magneto-optical band structure by Fourier space microscopy.
Kataja, M., Cichelero, R., Herranz, G. Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures. J. Vis. Exp. (153), e60094, doi:10.3791/60094 (2019).