Fischer, M. P. et al. (2016) Optical activation of germanium plasmonic antennas in the mid-infrared. Physical Review Letters, 117(4), 047401. (doi: 10.1103/PhysRevLett.117.047401)
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Abstract
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 redshifts 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.
| Item Type: | Articles |
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| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Samarelli, Mr Antonio and Paul, Professor Douglas |
| Authors: | Fischer, M. P., Schmidt, C., Sakat, E., Stock, J., Samarelli, A., Frigerio, J., Ortolani, M., Paul, D. J., Isella, G., Leitenstorfer, A., Biagioni, P., and Brida, D. |
| College/School: | College of Science and Engineering > School of Engineering College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
| Copyright Holders: | Copyright © 2016 American Physical Society |
| First Published: | First published in Physical Review Letters 117(4):047401 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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