Cathodoluminescence spectroscopy of plasmonic patch antennas: Towards lower order and higher energies
| Auteurs | Jeannin M., Rochat N., Kheng K., Nogues G. |
| Year | 2017-0177 |
| Source-Title | Optics Express |
| Affiliations | Univ. Grenoble Alpes, Grenoble, France, CNRS, Inst. NEEL, Nanophysique et semiconducteurs group, Grenoble, France, CEA, LETI, MINATEC Campus, Grenoble, France, CEA, INAC, Nanophysique et semiconducteurs Group, Grenoble, France |
| Abstract | We report on the cathodoluminescence characterization of Au, Al and a Au/Al bimetal circular plasmonic patch antennas, with disk diameter ranging from 150 to 900 nm. It allows us access to monomode operation of the antennas down to the fundamental dipolar mode, in contrast to previous studies on similar systems. Moreover we show that we can shift the operation range of the antennas towards the blue spectral range by using Al. Our experimental results are compared to a semi-analytical model that provides qualitative insight on the mode structure sustained by the antennas. © 2017 Optical Society of America. |
| Author-Keywords | |
| Index-Keywords | Aluminum, Antennas, Cathodoluminescence, Plasmons, Slot antennas, Cathodoluminescence spectroscopy, Dipolar modes, Disk diameters, Mode structure, Operation range, Semi-analytical model, Spectral range, Microstrip antennas |
| ISSN | 10944087 |
| Lien vers article | Link |