科研之友
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摘要
A method for generating and controlling dynamic surface plasmon patterns by highly focused "cogwheel-shaped" beams is studied theoretically and experimentally. The "cogwheel" beams are formed by collinear superposition of two Laguerre-Gaussian beams with equal but opposite topological charges. It is shown that the patterned surface plasmons can be reconfigured locally with advantages over patterned metallic islands.
- 出版日期2008-11-3
- 单位南阳理工学院; 天津市人民医院; 南开大学
