@article{10902/30714,
year = {2011},
url = {https://hdl.handle.net/10902/30714},
abstract = {Interaction between micrometer-long nanoantennas within an array considerably modifies the plasmonic resonant behaviour; for fundamental resonances in the infrared already at micrometer distances. In order to get systematic knowledge on the relationship between infrared plasmonic resonances and separation distances dx and dy in longitudinal and transverse direction, respectively, we experimentally studied the optical extinction spectra for rectangularly ordered lithographic gold nanorod arrays on silicon wafers. For small dy, strong broadening of resonances and strongly decreased values of far-field extinction are detected which come along with a decreased near-field intensity, as indicated by near-field amplitude maps of the interacting nanoantennas. In contrast, near-field interaction over small dx does only marginally broaden the resonance. Our findings set a path for optimum design of rectangular nanorod lattices for surface enhanced infrared spectroscopy.},
organization = {Financial support by the European project NANOANTENNA (HEALTH-F5-2009-241818), by the Strategic International Cooperative Program through the Japan Science and  Technology Agency and the German Science Foundation (DFG PU193/9-1), by the  Heidelberg Graduate School of Fundamental Physics, by the National project FIS-2010-  19609-C02-02 from the Spanish Ministry of Science and Innovation, and by the ETORTEK  project inanoGUNE from the Department of Industry of the Basque Government is gratefully acknowledged.},
publisher = {Optica Publishing Group},
publisher = {Optics express, 2011, 19, 15047-15061},
title = {Longitudinal and transverse coupling in infrared gold nanoantenna arrays: long range versus short range interaction regimes},
author = {Weber, Daniel and Albella Echave, Pablo and Alonso-González, Pablo and Neubrech, Frank and Gui, Han and Nagao, Tadaaki and Hillenbrand, Rainer and Aizpurua, Javier and Pucci, Annemarie},
}