Transmission of surface plasmon polaritons through atomic-size constrictions
Transmission of surface plasmon polaritons through atomic-size constrictions
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DOI：
10.1088/1367-2630/15/11/113014
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发表时间：
2013-11
影响因子：
3.3
通讯作者：
D. Benner;J. Boneberg;Philipp Nürnberger;Golaleh Ghafoori;P. Leiderer;Elke Scheer
中科院分区：
文献类型：
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作者：
D. Benner;J. Boneberg;Philipp Nürnberger;Golaleh Ghafoori;P. Leiderer;Elke Scheer
研究了表面等离子体激元在微米级金条上的激发和传播。光栅耦合器被嵌入用于SPP的激发和传播后的检测。实验装置允许测量在电磁波谱的近红外部分中激发的金条上的SPP的衰减长度。我们表明，SPPs传输的一个令人惊讶的高概率在一个锥形收缩，最小的横向尺寸的原子大小。
We study the excitation and propagation of surface plasmon polaritons (SPPs) on a micron-sized thin gold stripe. Grating couplers are embedded for both excitation of SPPs and detection after propagation. The experimental setup allows measuring of the decay length of the SPPs on the gold stripe excited in the near infrared part of the electromagnetic spectrum. We show that SPPs are transmitted with a surprisingly high probability across a tapered constriction, with smallest lateral dimensions of atomic size.