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Second-harmonic generation from singular metasurfaces
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DOI：10.1103/PhysRevB.105.235432.png)
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摘要
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We present a theoretical study of second-harmonic generation from a singular metasurface. The singular metasurfaces strongly interact with the incident light, where the large field enhancement forms an intense surface polarization that generates the second-harmonic field. By using transformation optics, the calculation of nonlinear optical response is converted from the metasurface frame to that of a simple slab geometry, largely reducing the complexity of the problem. In addition, the singular metasurface exhibits a weak dependence on the incident angle of light, which can be potentially used as an all-angle device for harmonic generations. Finally, we study the symmetry dependence of second-harmonic generation in the far field for the singular metasurface and show how to enhance the conversion efficiency under normal incidence by breaking the surface inversion symmetry.
Keyword:
HARMONIC-GENERATION
OPTICS
期刊
IF:
3.7
论文数:
15.4W
被引数:
41.0W
机构
引用论文
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