Waveguiding in all-garnet heteroepitaxial magneto-optical photonic crystals
A. M. Grishin+*, S. I. Khartsev+
+KTH Royal Institute of Technology, SE-164 40 Stockholm-Kista, Sweden
*Petrozavodsk State University, 185910 Petrozavodsk, Karelian Republic, Russia
We report the properties of 1D all-garnet
heteroepitaxial 21 layered magneto-optical photonic
crystal designed and fabricated for the resonance wavelength nm. It is
composed of alternating magneto-optical-active Bi3Fe5O12 and transparent
quarter-wavelength layers radio frequency magnetron sputtered onto single crystalline
Ca, Mg, Zr : Gd3Ga5O12(111) substrate.
Edges of the band gap and resonant central peaks in
transmission and Faraday rotation spectra experience significant (about 60 nm) "blueshift"
when the angle of light incidence increases up to 70°. Lower reflectance and strong
enhancement of Faraday rotation of TE mode compared to the TM-polarized light testify a
waveguiding of TE-mode within a resonant λ/2 Bi3Fe5O12 cavity.