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arXiv 1711.02498physics.optics
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耦合经典振子模型在等离子体纳米系统Fano共振建立中的应用

Application of the coupled classical oscillators model to the Fano resonance build-up in a plasmonic nanosystem

P. A. Golovinski, A. V. Yakovets, E. S. Khramov

摘要:

在两个线性耦合振子的经典模型框架下研究了Fano共振的激发动力学。得到了具有阻尼简谐力的模型的精确解。给出了在谐波激励下生长的Fano轮廓的细节.对于超宽带脉冲,系统的反应具有普适性,与时变响应函数一致。数值计算的结果澄清了实验测量系统的完整特性的两种替代方法:通过频率扫描或记录时间依赖性响应的δ脉冲直接观察系统对单色力的响应。作为一个具体的例子,计算了由量子点和金属纳米颗粒组成的系统中的依赖于时间的激发。然后,它是示出的扩展模型的阻尼振荡器与辐射校正描述的建立一个等离子体Fano共振的飞秒激光脉冲的纳米天线的散射的适用性。

英文摘要:

We study the excitation dynamics of Fano resonance within the classical model framework of two linear coupled oscillators. An exact solution for the model with a damped harmonic force is obtained. The details of growth a Fano profile under the harmonic excitation is shown. For incident ultra-wideband pulse, the reaction of a system becomes universal and coincides with the time-dependent response function. The results of numerical calculations clarify two alternative ways for experimental measurement of the complete characteristics of a system: direct observation of the system response to a monochromatic force by frequency scanning or recording of time-dependent response to the delta-pulse. As a specific example, time-dependent excitation in a system consisting of a quantum dot and a metal nanoparticle is calculated. Then it is shown the applicability of the extended model of damped oscillators with radiative correction to describe the build-up a plasmon Fano resonance in a scattering of a femtosecond laser pulse by nanoantenna.

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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