Tamm plasmon polaritons in the visible spectral region and its optical properties in ZnSe-based microcavities
Tamm plasmon polaritons in the visible spectral region and its optical properties in ZnSe-based microcavities
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可见光谱区Tamm等离子体激元及其在ZnSe基微腔中的光学特性
DOI：
10.1002/pssc.201510296
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
D. Hommel
中科院分区：
文献类型：
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作者：
SK. S. Rahman;K. Sebald;J. Gutowski;T. Klein;S. Klembt;C. Kruse;D. Hommel
报道了在银膜与锌基分布布拉格反射器(DBR)界面的可见光区形成Tamm等离子激元(TP)模的实验结果。通过微反射率测量，研究了阻带内TP本征能随DBR顶层厚度的变化规律。将实验结果与传递矩阵法的计算结果进行了比较。后者的计算表明，量子井激子与TP模之间可以实现强耦合。此外，在一个简单的TP结构中，通过增加DBR顶层中量子点的数目可以提高拉比分裂能。当金属层沉积在冷的MC样品上时，微反射光谱显示出腔共振的蓝移。当减小DBR的顶层厚度时，在相同的MC样品中同样观察到TP模式。这种腔谐振位移和TP模的形成与计算结果吻合较好。这些结果对于利用金属条实现对极化子的空间限制是相当有希望的。这种极化子的沟道为激子-极化子集成电路的实际演示开辟了道路。(2016Wiley-VCH Verlag GmbH&Co.KGaA，Weinheim)
We report on the formation of Tamm plasmon (TP) modes in the visible spectral region at the interface between a Ag film and a ZnSe‐based distributed Bragg reflector (DBR). The tuning of the TP eigenenergies within the stop‐band in dependence on the DBR top layer thickness is investigated by micro‐reflectivity measurements. The experimental findings are compared with calculations using the transfer matrix method. The latter calculations show that strong coupling can be achieved between quantum well (QW) excitons and the TP modes. In addition, the Rabi‐splitting energy can be enhanced in a simple TP structure by increasing the number of QWs inside the top layer of the DBR.When a metal layer is deposited on a cold MC sample, micro‐reflectivity spectra show a blue shift of the cavity resonance. The TP modes are likewise observed in the same MC sample when reducing the top layer thickness of the DBR. This shift of cavity resonance and formation of TP mode are in good agreement with calculations. These results are rather promising in order to realize a spatial confinement of the polaritons by utilizing metal strips. Such channeling of polaritons opens the way to practical demonstration of exciton‐polariton integrated circuits. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)