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We demonstrate noncollinear type-II second-harmonic generation in one-dimensional photonic crystals. A 15-period Al(0.3)Ga(0.7)As/Al2O3 structure, 3.5 μm long, was designed, fabricated, and experimentally characterized. We measured an effective nonlinearity of (52±12) pm/V in perfect phase-matching conditions.
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Bosco et al. (2004) studied this question.
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