Optical Activation of Germanium Plasmonic Antennas in the Mid-Infrared

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2016
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Sakat, Emilie
Samarelli, Antonio
Frigerio, Jacopo
Ortolani, Michele
Paul, Douglas J.
Isella, Giovanni
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Physical Review Letters. 2016, 117(4), 047401. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.117.047401
Zusammenfassung

Impulsive interband excitation with femtosecond near-infrared pulses establishes a plasma response in intrinsic germanium structures fabricated on a silicon substrate. This direct approach activates the plasmonic resonance of the Ge structures and enables their use as optical antennas up to the mid-infrared spectral range. The optical switching lasts for hundreds of picoseconds until charge recombination red-shifts the plasma frequency. The full behavior of the structures is modeled by the electrodynamic response established by an electron-hole plasma in a regular array of antennas.

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ISO 690FISCHER, Marco P., Christian SCHMIDT, Emilie SAKAT, Johannes STOCK, Antonio SAMARELLI, Jacopo FRIGERIO, Michele ORTOLANI, Douglas J. PAUL, Giovanni ISELLA, Alfred LEITENSTORFER, Paolo BIAGIONI, Daniele BRIDA, 2016. Optical Activation of Germanium Plasmonic Antennas in the Mid-Infrared. In: Physical Review Letters. 2016, 117(4), 047401. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.117.047401
BibTex
@article{Fischer2016-03-21T07:13:10ZOptic-35425,
  year={2016},
  doi={10.1103/PhysRevLett.117.047401},
  title={Optical Activation of Germanium Plasmonic Antennas in the Mid-Infrared},
  number={4},
  volume={117},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Fischer, Marco P. and Schmidt, Christian and Sakat, Emilie and Stock, Johannes and Samarelli, Antonio and Frigerio, Jacopo and Ortolani, Michele and Paul, Douglas J. and Isella, Giovanni and Leitenstorfer, Alfred and Biagioni, Paolo and Brida, Daniele},
  note={Article Number: 047401}
}
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