• Photonics Research
  • Vol. 10, Issue 9, 2032 (2022)
Gui-Ming Pan1、5、*, Li-Feng Yang2, Fang-Zhou Shu3, Yan-Long Meng1, Zhi Hong3, and Zhong-Jian Yang4、6、*
Author Affiliations
  • 1College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
  • 2First People’s Hospital of Changzhou, Changzhou 213000, China
  • 3Centre for THz Research, China Jiliang University, Hangzhou 310018, China
  • 4Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha 410083, China
  • 5e-mail: gmpan@cjlu.edu.cn
  • 6e-mail: zjyang@csu.edu.cn
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    DOI: 10.1364/PRJ.461415 Cite this Article Set citation alerts
    Gui-Ming Pan, Li-Feng Yang, Fang-Zhou Shu, Yan-Long Meng, Zhi Hong, Zhong-Jian Yang. Tailoring magnetic dipole emission by coupling to magnetic plasmonic anapole states[J]. Photonics Research, 2022, 10(9): 2032 Copy Citation Text show less

    Abstract

    The interaction between magnetic quantum emitters and the local electromagnetic environment is a promising method to manipulate the spontaneous emission. However, it is severely limited by the weak interactions between the magnetic component of light and natural materials. Herein, we demonstrate that the special type of anapole states associated with the “onefold” electric toroidal dipole moment can be excited by efficient interaction between magnetic dipole emitters and silver oligomers. Based on magnetic anapole states, the radiative power is effectively suppressed with significant coupling between the emitter and the silver nonamer, physically providing an ideal playground for the study of non-radiative transitions. These findings not only introduce magnetic anapoles to plasmonics but also open a door for the development of new high-performance magnetic-dipole-based optoelectronic devices.
    a(l,m)=(i)l1k2Z0OlmE0[π(2l+1)]1/2eimϕ{[ψl(kr)+ψl(kr)]Plm(cosθ)r^·Jsca(r)+ψl(kr)kr[ddθPlm(cosθ)r^·Jsca(r)imsinθPlm(cosθ)ϕ^·Jsca(r)]}d3r,

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    b(l,m)=(i)l+1k2Z0OlmE0[π(2l+1)]1/2eimϕjl(kr)[imsinθPlm(cosθ)θ^·Jsca(r)+ddθPlm(cosθ)ϕ^·Jsca(r)]d3r,

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    σEl=πk2m=ll(2l+1)|a(l,m)|2,

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    σMl=πk2m=ll(2l+1)|b(l,m)|2.

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    σscaED=c2k4Z12πI0|p|2,

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    σscaETD=c2k6Z12πI0|T(e)|2,

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    PscaMD=c2k4Z12π|m|2,

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    PscaMTD=c2k6Z12π|T(m)|2,

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    Gui-Ming Pan, Li-Feng Yang, Fang-Zhou Shu, Yan-Long Meng, Zhi Hong, Zhong-Jian Yang. Tailoring magnetic dipole emission by coupling to magnetic plasmonic anapole states[J]. Photonics Research, 2022, 10(9): 2032
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