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arXiv 1801.09027physics.optics
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强耦合诱导Krestchmann组态辐射方向的Fano共振

Fano resonance of radiative direction in Krestchmann configuration induced by strong coupling

Gang Song, Pengfei Zhang, Gaoyan Duan, Li Yu

摘要:

利用表面等离子体激元(SPPs)作为光源,研究了分子J聚集体的Kretschmann组态中的强耦合现象。SPP以分子J-聚集体的形式注入,并沿分子J-聚集体和金属膜之间的界面传播。采用经典方法和时域有限差分方法计算了该结构中表面等离子体的辐射特性,结果表明两种方法的计算结果是一致的。结果表明,辐射角随波长的变化呈现Fano线形,SPPs的光转换效率呈现Rabi分裂形式的强耦合现象。该结构对波长非常敏感,在传感、激光、光开关和非线性慢光器件等方面具有潜在的应用价值。

英文摘要:

We investigate the strong coupling phenomenon in Kretschmann configuration involving molecular J-aggregates by using surface plasmon polaritons (SPPs) as a light source. SPPs are injected in molecular J-aggregates and propagate along the interface between molecular J-aggregates and the metal film. Both the classical method and Finite difference time domain method are used to show the radiative characteristics of light converted from SPPs in our proposed structure, with the results from the two methods being consistent with each other. Our results show that the radiative angle versus the wavelength shows a Fano line shape and the conversion efficiency of SPPs into light exhibits the strong coupling phenomenon in form of Rabi splitting. Our structure is quite sensitive to the wavelength, which has potential applications in sensing, lasing, optical switching, and nonlinear slow-light devices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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