| Autor: |
Fu Feng, Clémentine Symonds, Catherine Schwob, Joël Bellessa, Agnès Maître, Jean-Paul Hugonin, Laurent Coolen |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
New Journal of Physics, Vol 20, Iss 3, p 033020 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
1367-2630 |
| DOI: |
10.1088/1367-2630/aaaf93 |
| Popis: |
Active control of the radiation orientation (beaming) of a metallic antenna has been reported by various methods, where the antenna excitation position was tuned with a typical 50 nm precision by a near-field tip or an electron-beam. Here we use optical microscopy to excite and analyze the fluorescence of a layer of nanocrystals embedded in an optical Tamm state nanostructure (metallic disk on top of a Bragg mirror). We show that the radiation pattern can be controlled by changing the excitation spot on the disk with only micrometer precision, in a manner which can be well described by numerical simulations. A simplified analytical model suggests that the propagation length of the in-plane confined optical modes is a key parameter for beaming control. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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