Photonic confinement in laterally structured metal-organic microcavities
Photonic confinement in laterally structured metal-organic microcavities
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DOI：
10.1063/1.4892533
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发表时间：
2014-08
影响因子：
4
通讯作者：
A. Mischok;R. Brückner;M. Sūdžius;C. Reinhardt;V. Lyssenko;H. Fröb;K. Leo
中科院分区：
文献类型：
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作者：
A. Mischok;R. Brückner;M. Sūdžius;C. Reinhardt;V. Lyssenko;H. Fröb;K. Leo
我们研究了有机微腔中包含穿孔银层的光学模式的形成。金属导致形成Tamm等离子体激元，从而将样品分成无金属或含金属的区域，支持不同的共振。这种模式分裂被用来限制椭圆孔和三角形切割中的光子，形成独特的驻波图案，显示出强烈的横向限制。与基于麦克斯韦-布洛赫的速率方程模型的比较清楚地显示了进入激光区域的非线性转变。电场密度的集中和横向损耗通道的抑制依次将激光阈值降低了一个数量级，至0.1nJ。通过对这种三角形楔形体的光谱研究，我们观察到了从无微扰腔态到强受限复杂横模的转变。这种结构的银层将来可用于电驱动有机固态激光器中的电荷载流子注入。
We investigate the formation of optical modes in organic microcavities with an incorporated perforated silver layer. The metal leads to a formation of Tamm-plasmon-polaritons and thus separates the sample into metal-free or metal-containing areas, supporting different resonances. This mode splitting is exploited to confine photons in elliptic holes and triangular cuts, forming distinctive standing wave patterns showing the strong lateral confinement. A comparison with a Maxwell-Bloch based rate equation model clearly shows the nonlinear transition into the lasing regime. The concentration of the electric field density and inhibition of lateral loss channels in turn decreases the lasing threshold by up to one order of magnitude, to 0.1 nJ. By spectroscopic investigation of such a triangular wedge, we observe the transition from the unperturbed cavity state to a strongly confined complex transversal mode. Such a structured silver layer can be utilized in future for charge carrier injection in an electrically driven organic solid state laser.