Spontaneous Radiation Dynamics of Three-Level Atoms Near Silver Nanospheres

doi:10.13438/j.cnki.jdzk.2023.06.009

Abstract

Abstract: Based on the method of Green's function presolvation operator,the spontaneous radiation dynamics of V-type three-level atoms near silver nanospheres are studied.The effects of atomic transition frequency and atomic distance on the surface of the nanosphere on the spontaneous radiation dynamics are investigated systematically.The results show that when the transition frequency of the atom is far away from the resonant frequency of the isoplasmon,the evolution spectrum of the atom is half high and narrow,the dynamic oscillation is enhanced,and the decay rate is slow with time.When the two transition frequencies are close to the formant frequency,the kinetic oscillation of the atom is weakened,and the attenuation rate is faster with time.The distance between the atom and the surface of the nanosphere plays an important role in the coherent oscillation.The closer the distance,the stronger the coherent oscillation;and the farther the distance,the weaker the coherent oscillation.

Key words: surface plasmon, three-level atom, spontaneous radiation dynamics

LI Yun, GAO Guangbo, SHAN Xinyu, HUANG Yonggang. Spontaneous Radiation Dynamics of Three-Level Atoms Near Silver Nanospheres[J]. Journal of Jishou University(Natural Sciences Edition), 2023, 44(6): 50-58.

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