Propagation of femtosecond surface plasmon polariton pulses on the surface of a nanostructured metallic film: Space-time complex amplitude characterization

被引:48
作者
Rokitski, R [1 ]
Tetz, KA [1 ]
Fainman, Y [1 ]
机构
[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA
关键词
D O I
10.1103/PhysRevLett.95.177401
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Ultrashort surface plasmon polariton (SPP) pulses, propagating on the surface of a nanostructured metallic film, are characterized in space and time using time-resolved spatial-heterodyne imaging. Optical pulses are coupled from free space into various surface modes using a 2D array of circular nanoholes, and spatial amplitude and phase characteristics of the scattered surface field are measured with femtosecond-scale time resolution. Demonstrated in-plane focusing of SPP pulse provides additional electromagnetic field localization with possible applications in SPP nanophotonics, nonlinear surface dynamics, biochemical sensing, and ultrafast surface studies.
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页数:4
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