Polarization-dependent strong coupling between surface plasmon polaritons and excitons in an organic-dye-doped nanostructure.
Polarization-dependent strong coupling between surface plasmon polaritons and excitons in an organic-dye-doped nanostructure.
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DOI：
10.1364/ol.42.002834
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发表时间：
2017-07
期刊：
影响因子：
3.6
通讯作者：
Kun Zhang;Tian-Yong Chen;Wen-Bo Shi;Cheng-Yao Li;Renhao Fan;Qian-jin Wang;R. Peng;Mu Wang
中科院分区：
文献类型：
--
作者：
Kun Zhang;Tian-Yong Chen;Wen-Bo Shi;Cheng-Yao Li;Renhao Fan;Qian-jin Wang;R. Peng;Mu Wang
在这项工作中，我们证明了表面等离子体激元（SPPs）和激子之间的偏振依赖强耦合的J-聚集体连接孔阵列。结果表明，激子强烈耦合的偏振相关的SPPs，并因此观察到拉比分裂。结果，在系统中产生了与偏振相关的极化激元带。随着入射角的增大，极化激元在横电照明下向高能量方向散射，而在横磁照明下向低能量方向散射。因此，在不同的偏振入射，我们实验上获得了不同的极化激元与相反的色散方向。这样，通过调节入射光的偏振态，我们可以激发出不同的极化激元，其能量向不同的方向传播。此外，通过反演这些极化激元带中各组分的混合分数，我们发现极化激元的色散特性是从激子和表面等离子体中继承的。我们的研究对可调光激子相互作用的相关研究具有启发意义，并在有源极化激元器件方面具有潜在的应用价值。
In this work, we demonstrate polarization-dependent strong coupling between surface plasmon polaritons (SPPs) and excitons in the J-aggregates-attached aperture array. It is shown that the excitons strongly couple with the polarization-dependent SPPs, and Rabi splittings are consequently observed. As a result, the polarization-dependent polariton bands are generated in the system. Increasing the incident angle, the polaritons disperse to higher energies under transverse-electric illumination, while the polaritons disperse to lower energies under transverse-magnetic illumination. Therefore, at different polarization incidence, we experimentally achieve distinct polaritons with opposite dispersion directions. In this way, tuning the polarization of the incident light, we can excite different polaritons whose energy propagates to different directions. Furthermore, by retrieving the mixing fractions of the components in these polariton bands, we find that the dispersion properties of the polaritons are inherited from both the SPPs and the excitons. Our investigation may inspire related studies on tunable photon-exciton interactions and achieve some potential applications on active polariton devices.