Phase-matched magnetization-induced second-harmonic generation in yttrium-iron-garnet magnetophotonic crystals

Magnetization-induced second-harmonic generation (MSHG) is studied in one-dimensional magnetophotonic crystals formed from a stack of ferromagnetic Bi-substituted yttrium-iron-garnet layers alternating with dielectric films. The resonance enhancement of reflected MSHG due to the phase-mismatch compensation is observed for longitudinal dc-magnetic-field application if the fundamental radiation is tuned across the photonic band gap edge. The high-contrast magnetization-induced variations in the second-harmonic intensity are obtained in transversal configuration of the nonlinear magnetooptical Kerr effect.