2024-03-28T20:27:41Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1362702020-09-29T09:17:21Zcom_10261_115com_10261_3col_10261_368
DIGITAL.CSIC
author
Georgiou, G.
author
Tserkezis, C.
author
Schaafsma, M. C.
author
Aizpurua, Javier
author
Gómez Rivas, Jaime
funder
Eusko Jaurlaritza
funder
European Research Council
funder
Ministerio de Economía y Competitividad (España)
funder
Foundation for Fundamental Research on Matter
funder
Netherlands Organization for Scientific Research
2016-09-02T11:36:19Z
2016-09-02T11:36:19Z
2015
Physical Review B 91(12): 125443 (2015)
http://hdl.handle.net/10261/136270
10.1103/PhysRevB.91.125443
http://dx.doi.org/10.13039/501100000781http://dx.doi.org/10.13039/501100003329http://dx.doi.org/10.13039/501100001712http://dx.doi.org/10.13039/501100003086
We demonstrate the photogeneration of loaded dipole plasmonic antennas resonating at THz frequencies. This is achieved by the patterned optical illumination of a semiconductor surface using a spatial light modulator. Our experimental results indicate the existence of capacitive and inductive coupling of localized surface plasmon polaritons. By varying the load in the antenna gap we are able to switch between both coupling regimes. Furthermore, we determine experimentally the effective impedance of the antenna load and verify that this load can be effectively expressed as a LC resonance formed by a THz inductor and capacitor connected in a parallel circuit configuration. These findings are theoretically supported by full electrodynamic calculations and by simple concepts of lumped circuit theory. Our results open new possibilities for the design of active THz circuits for optoelectronic devices.
eng
openAccess
Active loaded plasmonic antennas at terahertz frequencies: Optical control of their capacitive-inductive coupling
artículo
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URL
https://digital.csic.es/bitstream/10261/136270/1/capacitive-inductive%20coupling.pdf
File
MD5
ea447bc15deb0b38ec6ad2a58e59556b
1806355
application/pdf
capacitive-inductive coupling.pdf