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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1302.0678physics.optics
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由近场光学手征性产生远场轨道角动量

Generating far-field orbital angular momenta from near-field optical chirality

Yuri Gorodetski, Aurélien Drezet, Cyriaque Genet, Thomas W. Ebbesen

摘要:

我们证明,精心设计的纳米结构两侧的薄悬浮金属膜耦合成手性近场光和传输涡旋光束通过一个中心孔,连接膜的两侧。我们展示了如何通过纳米结构设计来定制远场轨道角动量(OAM)指数。我们揭示了至关重要的OAM选择规则所施加的中心孔径和OAM求和规则与实验数据完全一致。

英文摘要:

We demonstrate that nanostructures carefully designed on both sides of a thin suspended metallic membrane couple light into a chiral near field and transmit vortex beams through a central aperture that connects the two sides of the membrane. We show how far-field orbital angular momentum (OAM) indices can be tailored through nanostructure designs. We reveal the crucial importance of OAM selection rules imposed by the central aperture and derive OAM summation rules in perfect agreement with experimental data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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