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arXiv 0901.4807quant-ph
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聚焦光束中振荡偶极子的光散射

Light scattering by an oscillating dipole in a focused beam

Gert Zumofen, Nassiredin M. Mojarad, Mario Agio

摘要:

研究了聚焦光束与位于焦斑处的单个经典振荡偶极子或二能级系统的相互作用。特别是,散射到入射功率的比率进行了研究的振荡器的散射截面和有效的焦点面积。德拜衍射积分应用于计算它和结果报告的定向偶极波。多极展开的入射光束,然后考虑和德拜衍射方法之间的等价性进行了讨论。最后,研究了与单个振子相互作用时电场的相位变化。

英文摘要:

The interaction between a focused beam and a single classical oscillating dipole or a two-level system located at the focal spot is investigated. In particular, the ratio of the scattered to incident power is studied in terms of the oscillator's scattering cross section and the effective focal area. Debye diffraction integrals are applied to calculate it and results are reported for a directional dipolar wave. Multipole expansion of the incident beam is then considered and the equivalence between this and the Debye diffraction approach is discussed. Finally, the phase change of the electric field upon the interaction with a single oscillator is studied.

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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