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arXiv 0901.4155physics.optics
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透明介质中的光学前体

Optical precursors in transparent media

Bruno Macke, Bernard Ségard

摘要:

我们从理论上研究了当光载波的频率与介质的自然或电磁诱导透明窗口的中心重合时,步进脉冲通过稀色散介质的线性传播(慢光系统)。我们获得了完整的阶跃响应的解析表达式,并表明,对于代表真实实验的参数,可以清楚地观察到索末菲-布里渊前体,主要领域和第二前体“后光标”,所有的振幅与入射步骤的振幅相当。这种行为与迄今为止通常考虑的系统的行为形成强烈对比。

英文摘要:

We theoretically study the linear propagation of a stepwise pulse through a dilute dispersive medium when the frequency of the optical carrier coincides with the center of a natural or electromagnetically induced transparency window of the medium (slow-light systems). We obtain fully analytical expressions of the entirety of the step response and show that, for parameters representative of real experiments, Sommerfeld-Brillouin precursors, main field and second precursors "postcursors" can be distinctly observed, all with amplitudes comparable to that of the incident step. This behavior strongly contrasts with that of the systems generally considered up to now.

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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