We study the third-harmonic generation by structured light in subwavelength silicon nanoparticles which support both electric and magnetic multipolar Mie resonances. By tailoring the vectorial structure of the pumping light, we may control both strength and polarization composition of the excited harmonic fields. In this way, we generate nonlinear fields with radial or azimuthal polarizations by addressing selectively a different type of multipolar Mie resonances, also enhancing or suppressing the optically induced nonlinear magnetic response.

中文翻译：

---

米氏共振纳米粒子中结构光的选择性三次谐波产生。

我们研究了结构光在亚波长硅纳米粒子中的三次谐波产生，该纳米粒子同时支持电和磁多极Mie共振。通过调整泵浦光的矢量结构，我们可以控制激发谐波场的强度和偏振成分。通过这种方式，我们通过选择性地解决不同类型的多极Mie共振，还增强或抑制了光学感应的非线性磁响应，从而生成了具有径向或方位极化的非线性场。