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Nonlinear optical characterization in a generalized Fibonacci-type optical superlattice, which can be generated by the concurrent inflation rule A→AmB and B→A (where m=positive integer), has been studied both theoretically and experimentally. Quasi-phase-matched second-harmonicgeneration spectrum and direct third-harmonic-generation with high efficiency have been measured in a LiTaO3 superlattice structure with m=2. Two different structures in real space have shown a similarity in reciprocal space.
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Qin et al. (1999) studied this question.
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