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Octave-wide photonic band gap in three-dimensional plasmonic Bragg structures and limitations of radiative coupling

机译:三维等离子布拉格结构中的倍频宽光子带隙及辐射耦合的局限性

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Radiative coupling between oscillators is one of the most fundamental subjects of research in optics, where particularly a Bragg-type arrangement is of interest and has already been applied to atoms and excitons in quantum wells. Here we explore this arrangement in a plasmonic structure. We observe the emergence of an octave-wide photonic band gap in the optical regime. Compared with atomic or excitonic systems, the coupling efficiency of the particle plasmons utilized here is several orders of magnitude larger and widely tunable by changing the size and geometry of the plasmonic nanowires. We are thus able to explore the regime where the coupling distance is even limited by the large radiative decay rate of the oscillators. This Bragg-stacked coupling scheme will open a new route for future plasmonic applications such as far-field coupling to quantum emitters without quenching, plasmonic cavity structures and plasmonic distributed gain schemes for spasers.. ? 2012 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.
机译:振荡器之间的辐射耦合是光学研究中最基本的主题之一,特别是布拉格类型的布置引起了人们的兴趣,并且已经将其应用于量子阱中的原子和激子。在这里,我们探索了等离子体结构中的这种排列。我们观察到在光学范围内出现了一个倍频程的光子带隙。与原子或激子系统相比,此处使用的粒子等离子体激元的耦合效率要大几个数量级,并且通过改变等离子体纳米线的尺寸和几何形状可以广泛地调节。因此,我们能够研究耦合距离甚至受振荡器的大辐射衰减率限制的情况。这种布拉格堆叠的耦合方案将为未来的等离子体应用打开新的途径,例如无需淬灭的量子发射器的远场耦合,等离子体空间结构和用于振子的等离子体分布增益方案。 2012自然出版集团,麦克米伦出版社有限公司的一个部门。版权所有。

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