Journal of Jishou University(Natural Sciences Edition) ›› 2023, Vol. 44 ›› Issue (6): 67-74.DOI: 10.13438/j.cnki.jdzk.2023.06.011

• Micro-nano Optics • Previous Articles     Next Articles

Spontaneous Emission of Atoms in Double-Column Structure Based on Quasi-Normal Mode Theory

CHEN Xuanren,SHAN Xinyu,YANG Hong   

  1. (College of Physics and Electromechanical Engineering,Jishou University,Jishou 416000,Hunan China)
  • Online:2023-11-25 Published:2023-12-19

Abstract: Based on the quasi-normal mode (QNM) theory,in the local photoresponse model,fluid dynamics model and generalized non-local photoresponse model of free electrons in metals,the spontaneous emission enhancement characteristics of two-level atoms in the nano-column structure are studied.With efficient coupled QNM theory,the effects of quantum dot position and double-column gap distance on the enhancement properties of spontaneous emission are investigated.The results show that compared with the full-wave method,the quasi-canonical mode method can efficiently and accurately calculate the enhanced characteristics of spontaneous emission,and the nanopillar gap has an important influence on the resonance frequency of the quasi-canonical mode.These studies have important guiding significance for understanding the nanoscale dimer structure to enhance light-matter interaction.

Key words: surface plasmonic, quasi-normal mode theory, amplified spontaneous emission, double-column structure

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