Launching of surface plasmon polaritons with tunable directions and intensity ratios by phase control of dual fundamental Gaussian beams

Chun Fu Kuo, Shu Chun Chu

研究成果: Article

7 引文 斯高帕斯(Scopus)

摘要

This study proposes a method to achieve excitation of surface plasmon polaritons (SPPs) with tunable directions and intensity ratios on a designed two thin slit structure by the phase control of dual fundamental Gaussian beams. Simply modulating the phase difference between two incident fundamental Gaussian beams (i.e. TEM0, 0 mode laser beam) controls the propagating direction of the resulting SPP wave between two opposite linear directions and also the value of the intensity ratio between propagating SPP waves in two opposite directions. The proposed method achieves a wide dynamic SPP intensity ratio adjusting range from-20 dB to 20 dB. This easy method of changing the direction of SPPs makes the dynamic control of the direction of SPP waves practicable, which shows great potential in plasmonic applications.

原文English
頁(從 - 到)10456-10463
頁數8
期刊Optics Express
25
發行號9
DOIs
出版狀態Published - 2017 五月 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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