Mode-matching for Optical Antennas
| Autor: | Feichtner, Thorsten, Christiansen, Silke, Hecht, Bert |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 119, 217401 (2017) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.119.217401 |
| Popis: | The emission rate of a point dipole can be strongly increased in presence of a well-designed optical antenna. Yet, optical antenna design is largely based on radio-frequency rules, ignoring e.g.~ohmic losses and non-negligible field penetration in metals at optical frequencies. Here we combine reciprocity and Poynting's theorem to derive a set of optical-frequency antenna design rules for benchmarking and optimizing the performance of optical antennas driven by single quantum emitters. Based on these findings a novel plasmonic cavity antenna design is presented exhibiting a considerably improved performance compared to a reference two-wire antenna. Our work will be useful for the design of high-performance optical antennas and nanoresonators for diverse applications ranging from quantum optics to antenna-enhanced single-emitter spectroscopy and sensing. Comment: 4 pages + appendices; 2 + 4 figures, 1 Table |
| Databáze: | arXiv |
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