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Close encounters between nanoantennas: Bridging quantum and classical plasmonics

Speaker: 
Javier Aizpurua (Donostia International Physics Center)
Date: 
Wed, 04/07/2012 - 12:00pm to 1:00pm
Location: 
S13-M01-11 (Physics Conference Room)
Event Type: 
Seminars

Abstract

Plasmonic nanostructures can be used as canonical building blocks to host and actively participate in a variety of complex physical phenomena such as non-linear effects, quantum tunneling or photoemission, to cite a few. We will present a number of examples where a conductive contact between the two arms of a gap-antenna is used for (i) effective control of the near-field oscillations in the loaded antenna [1], (ii) relating transport and optical properties based on the evolution of the Plasmon excitations [2], and (iii) producing optical spectral switch based on the presence of a photoconductive material linking the gap that can sustain a fast and large free-carrier density [3].

Plasmonic nanostructures can be used as canonical building blocks to host and actively participate in a variety of complex physical phenomena such as non-linear effects, quantum tunneling or photoemission, to cite a few. We will present a number of examples where a conductive contact between the two arms of a gap-antenna is used for (i) effective control of the near-field oscillations in the loaded antenna [1], (ii) relating transport and optical properties based on the evolution of the Plasmon excitations [2], and (iii) producing optical spectral switch based on the presence of a photoconductive material linking the gap that can sustain a fast and large free-carrier density [3].

References:

[1] M. Schnell, A. García-Etxarri, A.J. Huber, K. Crozier, J. Aizpurua, R. Hillenbrand, Nature Photonics 3, 287 (2009).
[2] O. Pérez-González, N. Zabala, A.G. Borisov, N. J. Halas, P. Nordlander, J. Aizpurua, Nano Lett. 10, 3090 (2010)
[3] N. Large, M. Abb, J. Aizpurua, O. Muskens, Nano Lett. 10, 1741 (2010)
[4] R. Esteban, A.G. Borisov, P. Nordlander, J. Aizpurua, Nature Comm. 3, 825 (2012).
 

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