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arXiv physics/0505106physics.optics
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光学微腔中Purcell因子增强的散射效率

Purcell factor enhanced scattering efficiency in optical microcavities

T. J. Kippenberg, A. L. Tchebotareva, J. Kalkman, A. Polman, K. J. Vahala

摘要:

研究了硅纳米晶嵌入超高Q值环形微腔中的光学微腔散射过程。使用一种新的测量技术的基础上可观察到的模式分裂,我们表明,光散射是高度优先的:超过99.8%的散射光子通量被散射到原来的双简并腔模式。大的俘获效率归因于进入腔模的散射率增加,这是由于态的光密度超过自由空间值的增强,并且与自发发射中的Purcell效应具有相同的起源。实验确定的Purcell因子为883。

英文摘要:

Scattering processes in an optical microcavity are investigated for the case of silicon nanocrystals embedded in an ultra-high Q toroid microcavity. Using a novel measurement technique based on the observable mode-splitting, we demonstrate that light scattering is highly preferential: more than 99.8% of the scattered photon flux is scattered into the original doubly-degenerate cavity modes. The large capture efficiency is attributed to an increased scattering rate into the cavity mode, due to the enhancement of the optical density of states over the free space value and has the same origin as the Purcell effect in spontaneous emission. The experimentally determined Purcell factor amounts to 883.

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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