Laverdant Julien, Aberra Guebrou Samuel, Bessueille François, Symonds Clementine, Bellessa Joel
J Opt Soc Am A Opt Image Sci Vis. 2014 May 1;31(5):1067-73. doi: 10.1364/JOSAA.31.001067.
We report the experimental combination of leakage radiation microscopy with a Young slit experiment to address the spatial coherence properties of surface waves. We applied this method to measurements of surface plasmon polaritons (SPPs). The relationship between the spatial decay and interference contrast allows us to extract the degree of coherence. In a second step, we investigate the coherence properties of the plasmon in the weak coupling regime between fluorophores and metallic surfaces. Finally, a method is proposed to extract the propagation length of SPPs in a large variety of systems.
我们报告了将泄漏辐射显微镜与杨氏双缝实验相结合的实验，以研究表面波的空间相干特性。我们将此方法应用于表面等离激元极化激元（SPP）的测量。空间衰减与干涉对比度之间的关系使我们能够提取相干度。第二步，我们研究了荧光团与金属表面之间弱耦合 regime 中等离激元的相干特性。最后，提出了一种在各种系统中提取 SPP 传播长度的方法。
