Plasmon-enhanced nonlinear yield in the Otto and Kretschmann configurations
Plasmon-enhanced nonlinear yield in the Otto and Kretschmann configurations
复制标题
DOI：
10.1103/physrevb.98.115415
复制
发表时间：
2018-09-07
影响因子：
3.7
通讯作者：
Woggon, Ulrike
中科院分区：
文献类型：
--
作者：
Heckmann, Jan;Pufahl, Karsten;Woggon, Ulrike
在实验室中激发的表面等离子体激元具有与理想表面等离子体激元完全不同的基本性质，理想表面等离子体激元是两个无限介质之间界面处的束缚模式。诸如场限制和传播长度的特征受用于耦合到远场的配置的影响。我们实验研究了奥托和Kretschmann配置如何影响光滑金属层的线性耦合特性和二次谐波的非线性产生。结果进行比较，从电动力学理论的基础上的流体动力学模型，这证实了非线性产量是一个数量级以上的Kretschmann配置比在奥托配置的计算。
Propagating surface plasmons in the laboratory can have basic properties quite different from those of the ideal surface plasmon polariton, which is a bound mode at the interface between two infinite media. Features such as field confinement and propagation length are affected by the configuration used for coupling to the far field. We experimentally investigate how the Otto and Kretschmann configurations influence the linear coupling properties of smooth metal layers and the nonlinear generation of the second harmonic. The results are compared to calculations from electrodynamic theory based on the hydrodynamic model, which confirm that the nonlinear yield is an order of magnitude greater in the Kretschmann configuration than in the Otto configuration.