Mapping the Magnetic Field Intensity of Light with the Nonlinear Optical Emission of a Silicon Nanoparticle

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Guang-Can Li
  • Jin Xiang
  • Yong-Liang Zhang
  • Fu Deng
  • Mingcheng Panmai
  • Weijie Zhuang
  • Sheng Lan

Detail(s)

Original languageEnglish
Pages (from-to)2453–2460
Journal / PublicationNano Letters
Volume21
Issue number6
Online published2 Mar 2021
Publication statusPublished - 24 Mar 2021

Abstract

To detect the magnetic component of arbitrary unknown optical fields, a candidate probe must meet a list of demanding requirements, including a spatially isotropic magnetic response, suppressed electric effect, and wide operating bandwidth. Here, we show that a silicon nanoparticle satisfies all these requirements, and its optical magnetism driven multiphoton luminescence enables direct mapping of the magnetic field intensity distribution of a tightly focused femtosecond laser beam with varied polarization orientation and spatially overlapped electric and magnetic components. Our work establishes a powerful nonlinear optics paradigm for probing unknown optical magnetic fields of arbitrary electromagnetic structures, which is not only essential for realizing subwavelength-scale optical magnetometry but also facilitates nanophotonic research in the magnetic light-matter interaction regime.

Research Area(s)

  • magnetic nanoprobe, Mie resonance, multiphoton photoluminescence, optical magnetism, silicon nanoparticle

Citation Format(s)

Mapping the Magnetic Field Intensity of Light with the Nonlinear Optical Emission of a Silicon Nanoparticle. / Li, Guang-Can; Xiang, Jin; Zhang, Yong-Liang; Deng, Fu; Panmai, Mingcheng; Zhuang, Weijie; Lan, Sheng; Lei, Dangyuan.

In: Nano Letters, Vol. 21, No. 6, 24.03.2021, p. 2453–2460.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review