Phase-Resolved Observation of the Gouy Phase Shift of Surface Plasmon Polaritons

被引：11
|
作者：
Birr, Tobias [1 ]
Fischer, Tim [1 ]
Evlyukhin, Andrey B. [1 ]
Zywietz, Urs [1 ]
Chichkov, Boris N. [1 ]
Reinhardt, Carsten [1 ,2 ]
机构：
[1] Laser Zentrum Hannover eV, Hollerithallee 8, D-30419 Hannover, Germany
[2] Hsch Bremen, Neustadtswall 30, D-28199 Bremen, Germany
来源：
ACS PHOTONICS | 2017年 / 4卷 / 04期
关键词：
Gouy phase shift; surface plasmon-polaritons; leakage radiation microscopy; PULSES;
D O I：
10.1021/acsphotonics.6b00999
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The space-resolved Gouy phase shift for focused surface plasmon polaritons (SPPs) in the optical regime is experimentally demonstrated for the first time. SPPs are excited by CW laser radiation focused onto a dielectric ridge placed on a cover glass surface coated by a silver film. The Gouy phase measurements are performed using interference between a reference plane wave and leakage radiation. The measured Gouy shift has a value of pi/2 corresponding to the two-dimensional nature of surface plasmon polaritons.
引用
收藏
页码：905 / 908
页数：4
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