光与超常介质相互作用时,光的磁场也变得很重要 。超常介质的色散磁导率导致光与超常介质的非线性相 互作用呈现出许多新特性。总结了超常介质中二阶非线性光学现象的国内外研究进展。(As the light interacts with the metamaterial, the magnetic field of light becomes important. The dispersive magnetic permeability of metamaterials leads to the non