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arXiv 1003.4968physics.optics
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相干理想吸收体:时间反转激光器

Coherent Perfect Absorbers: Time-reversed Lasers

Y. D. Chong, Li Ge, Hui Cao, A. D. Stone

摘要:

我们表明,一个任意的身体或聚集体可以完全吸收离散频率,如果一个精确的耗散量是在特定条件下的相干单色照明。这种效应源于光吸收和波干涉的相互作用,对应于将弹性S矩阵的零点移动到实波矢轴上。因此,这是阈值激光的时间反演过程。在500-900 nm范围内照射的简单Si板几何形状中证明了该效果。相干完全吸收体是一种新型的线性光学元件,吸收干涉仪,它可能是有用的控制光能转移。

英文摘要:

We show that an arbitrary body or aggregate can be made perfectly absorbing at discrete frequencies if a precise amount of dissipation is added under specific conditions of coherent monochromatic illumination. This effect arises from the interaction of optical absorption and wave interference, and corresponds to moving a zero of the elastic S-matrix onto the real wavevector axis. It is thus the time-reversed process of lasing at threshold. The effect is demonstrated in a simple Si slab geometry illuminated in the 500-900 nm range. Coherent perfect absorbers are novel linear optical elements, absorptive interferometers, which may be useful for controlled optical energy transfer.

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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