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arXiv 0711.4879physics.optics
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高提取效率等离子体激元晶体中的自发发射控制

Spontaneous emission control in high-extraction efficiency plasmonic crystals

Hideo Iwase, Dirk Englund, Jelena Vuckovic

摘要:

实验和理论研究了InP-TiO-Au-TiO-Si异质结构中六角等离子体晶体波导限制(WC)反对称模中表面等离子体激元(SPP)的激子-场耦合。耦合到SPP模的InP基横向磁(TM)应变多量子阱(MQW)的辐射衰减时间被观察到比裸MQW晶片短2.9-3.7倍。理论上,我们发现80%的增强的PL发射到SPP模式,和17%的增强的发光重定向到WC反对称模式。除了激子与等离子体激元模式的直接耦合之外,该演示还可用于高温SPP激光器的开发,高度集成的光电器件或小型化生物传感器的开发。

英文摘要:

We experimentally and theoretically investigate exciton-field coupling for the surface plasmon polariton (SPP) in waveguide-confined (WC) anti-symmetric modes of hexagonal plasmonic crystals in InP-TiO-Au-TiO-Si heterostructures. The radiative decay time of the InP-based transverse magnetic (TM)-strained multi-quantum well (MQW) coupled to the SPP modes is observed to be 2.9-3.7 times shorter than that of a bare MQW wafer. Theoretically we find that 80 % of the enhanced PL is emitted into SPP modes, and 17 % of the enhanced luminescence is redirected into WC-anti-symmetric modes. In addition to the direct coupling of the excitons to the plasmonic modes, this demonstration is also useful for the development of high-temperature SPP lasers, the development of highly integrated photo-electrical devices, or miniaturized biosensors.

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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