衍射
光学
非线性系统
调制（音乐）
辐射
非线性光学
物理
布拉格定律
材料科学
量子力学
激光器
声学
标识
DOI：10.1103/physrevlett.21.1404
摘要
A periodic spatial modulation of the nonlinear susceptibility is shown theoretically and experimentally to lead to diffraction of optical harmonic radiation at angles of incidence for which Bragg's law is satisfied.
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