Multipole resonance in the interaction of a spherical Ag nanoparticle with an emitting dipole

• 作 者: 刘加东 宋峰 张俊 刘淑静 王凤箫 王立超
• 机 构: TEDA Applied Physics School, Nankai University,School of Physics, Nankai University,School of Biomed
• 出 处: Chinese Physics B
• 发表日期: 2014年08期
• 关键词: dipole spherical spacing decay metallic tangential excited radiative Wavelength

The effect of multipole resonance in the interaction between a spherical metallic nanoparticle(MNP) and an emitting dipole is studied with the Mie theory. The results show that the absorption peak of the MNP with respect to the field of the emitting dipole is blue-shifted with the decrease of the spacing between MNP and emitting dipole due to the enhanced multipole resonance. At a short distance, the enhanced multipole terms of scattering are not obvious compared with the dipole term. For the decay rate of the emitting dipole, multipole resonance brings about the enhancement of it largely at short spacing. For the radiative decay rate, the behavior is quite different. The dipole term is dominant at a short spacing,and the multipole term is dominant at a larger spacing.

The effect of multipole resonance in the interaction between a spherical spherical nanoparticle (MNP) and an emitting dipole is studied with the Mie theory. The results show that the absorption peak of the MNP with respect to the field of the emitting dipole is blue-shifted With the decrease of the spacing between MNP and emitting dipole due to the enhanced multipole resonance. The a short distance, the enhanced multipole terms of the scattering are not obvious compared with the dipole term. For the decay rate of the emitting dipole, multipole resonance brings about the enhancement of it largely at short spacing. For the radiative decay rate, the behavior is quite different. The dipole term is dominant at a short spacing, and the multipole term is dominant at a larger spacing.