Magneto-optical enhancement through gyrotropic gratings.
Diffracted magneto-optical (MO) effects are numerically investigated for one-dimensional lossy gyrotropic gratings in the zeroth and the first orders for the polar magnetization by utilizing the rigorous coupled-wave approach implemented as an Airy-like internal-reflection series. The simulated Kerr spectra agree well with the experimental ones. The dependence of the MO Kerr enhancement on the grating depth in the first-order diffraction, compared with that in the zeroth one, is illustrated, and the diffracted MO Faraday effect is theoretically investigated as well. Such a MO enhancement through the gyrotropic gratings is superior to the conventional MO devices and magneto-photonic crystals. The potential applications are also suggested.
Lu
Y H
YH
Quantum Photonic Science Research Center and BK21 Program Division of Advanced Research and Education in Physics, Hanyang University, Seoul 133-791, Korea.
Cho
M H
MH
Kim
J B
JB
Lee
G J
GJ
Lee
Y P
YP
Rhee
J Y
JY
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008280:Magnetics; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation