“Plasmonics” in free space : observation of giant wavevectors, vortices, and energy backflow in superoscillatory optical fields
Evanescent light can be localized at the nanoscale by resonant absorption in a plasmonic nanoparticle or taper or by transmission through a nanohole. However, a conventional lens cannot focus free-space light beyond half of the wavelength λ. Nevertheless, precisely tailored interference of multiple...
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| Main Authors: | , , |
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| 格式: | Article |
| 語言: | English |
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2019
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| 在線閱讀: | https://hdl.handle.net/10356/79522 http://hdl.handle.net/10220/49060 |
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