Universal Aspects of Ultrafast Optical Pulse Scattering by a Nanoscale Asperity
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- 作者：Lingxiao Zhang ; Atsushi Kubo ; Leiming Wang ; Hrvoje Petek ; Tamar Seideman
- 刊名：Journal of Physical Chemistry C
- 出版年：2013
- 出版时间：September 12, 2013
- 年：2013
- 卷：117
- 期：36
- 页码：18648-18652
- 全文大小：324K
- 年卷期：v.117,no.36(September 12, 2013)
- ISSN：1932-7455
文摘
We combine photoemission electron microscopy and electromagnetic simulations to describe the surface plasmon polariton dynamics following interaction of an ultrafast optical pulse with a slit coupling structure in a silver film. Through analysis of interference phenomena that lead to photoelectron emission from the silver film, we establish the universal contributions of a nanoscale asperity to the scattered surface field. Our results reveal the important role of surface cylindrical waves within the slit in the excitation of surface plasmon.