Title :
Near-field mapping of infrared nanoantennas
Author :
Schnell, Martin ; Garcia-Etxarri, Aitzol ; Huber, Andreas ; Crozier, Kenneth B. ; Aizpurua, Javier ; Hillenbrand, Rainer
Author_Institution :
Nanooptics Group, CIC nanoGUNE Consolider, Donostia-San Sebastian, Spain
Abstract :
We demonstrate amplitude- and phase-resolved near-field mapping of nanoantennas by scattering-type near-field optical microscopy. The technique is applied to monitor the evolution of the near-field oscillations of infrared gap antennas progressively loaded with metallic bridges of varying size. Our results provide direct experimental evidence that nanoscale infrared near fields can be controlled by antenna loading, which is in excellent agreement with numerical calculations.
Keywords :
Atomic force microscopy; Dipole antennas; Light scattering; Loaded antennas; Optical interferometry; Optical microscopy; Optical scattering; Particle scattering; Surface emitting lasers; Transmitting antennas;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
