Conical Second Harmonic Generation in a Two-Dimensional 2 Photonic Crystal : A Hexagonally Poled LiTaO
Conical Second Harmonic Generation in a Two-Dimensional 2 Photonic Crystal : A Hexagonally Poled LiTaO
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发表时间：
2004
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影响因子：
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通讯作者：
P. Xu;S. Ji;S. Zhu;X. Q. Yu;J. Sun;H. T. Wang;J. L. He;Y. Y. Zhu-Y.;N. Ming
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作者：
P. Xu;S. Ji;S. Zhu;X. Q. Yu;J. Sun;H. T. Wang;J. L. He;Y. Y. Zhu-Y.;N. Ming
133904-1在二维2光子晶体-六角极化LiTaO 3晶体中发现了一种新型的圆锥二次谐波产生。它揭示了另一种类型的非线性相互作用的存在-一个散射涉及光学参量产生的非线性介质。这种非线性相互作用可以显着放大调制2结构的准相位匹配过程。锥形光束记录了散射信号的空间分布，揭示了二维光子晶体的结构信息和对称性。
133904-1 A new type of conical second-harmonic generation was discovered in a 2D 2 photonic crystal—a hexagonally poled LiTaO3 crystal. It reveals the presence of another type of nonlinear interaction—a scattering involved optical parametric generation in a nonlinear medium. Such a nonlinear interaction can be significantly enlarged in a modulated 2 structure by a quasi-phase-matching process. The conical beam records the spatial distribution of the scattering signal and discloses the structure information and symmetry of the 2D 2 photonic crystal.