Controlling fluorescence emission by plasmonic toroidal dipolar resonance in a ring-groove metastructure.
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| Title: | Controlling fluorescence emission by plasmonic toroidal dipolar resonance in a ring-groove metastructure. |
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| Authors: | Zhang, Xiao-Rui1 (AUTHOR), Zhou, Xue-Tong1 (AUTHOR), Hu, Ya-Xin1 (AUTHOR), Li, Jia-Qi1 (AUTHOR), Wang, Jin1 (AUTHOR), Dong, Zheng-Gao1 (AUTHOR) zgdong@seu.edu.cn |
| Source: | Physics Letters A. Oct2020, Vol. 384 Issue 28, pN.PAG-N.PAG. 1p. |
| Subjects: | Resonance, Emission control, Toroidal plasma, Fluorescence, Magnitude (Mathematics) |
| Abstract: | • Modifying fluorescence emission under toroidal dipolar resonance. • Radiation decay rate can obtain two orders of magnitude enhancement. • Manipulating the polarization state of fluorescence. • Controlling two properties of fluorescence simultaneously. We propose a ring-groove nanostructure which can achieve toroidal dipolar resonance under normal incidence, and find that this design, due to the strong field confinement for this dipolar resonance, can simultaneously enhance the radiative decay rate and achieve high degree of linear polarization of the fluorescence emission. In addition, both radiation enhancement and degree of linear polarization are higher than those by other structure that cannot obtain toroidal dipolar resonance. It is expected that this design can promote the development of polarized light-emitting devices with enhanced emission intensity and potentially functional toroidal metasurface lasers. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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