Rights statement: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © 2016 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acsphotonics.5b00672
Accepted author manuscript, 1.18 MB, PDF document
Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License
Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Fast modulation of terahertz quantum cascade lasers using graphene loaded plasmonic antennas
AU - Degl'innocenti, Riccardo
AU - Jessop, David S
AU - Sol, Christian W. O.
AU - Xiao, Long
AU - Kindness, Stephen J.
AU - Lin, Hungyen
AU - Zeitler, J. Axel
AU - Braeuninger-Weimer, Philipp
AU - Hofmann, Stephan
AU - Ren, Yuan
AU - Kamboj, Varun S.
AU - Griffiths, Jonathan P.
AU - Beere, Harvey E.
AU - Ritchie, David A.
N1 - This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © 2016 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acsphotonics.5b00672
PY - 2016/3/16
Y1 - 2016/3/16
N2 - We report the fast amplitude modulation of a quantum cascade laser emitting in single mode operation in the terahertz frequency range by employing compact, integrated devices based on the interplay between plasmonic antenna arrays and monolayer graphene. By acting on the carrier concentration of graphene the optical response of these plasmonic resonances was modified. The modulators characteristics have been studied by using both time domain spectroscopic laser systems, yielding the broad frequency response of these resonant arrays, and quantum cascade lasers, providing us with a narrow and stable laser source, a mandatory prerequisite for the determination of the modulation speed of these devices. The measured modulation speed exhibits a cut-off frequency of 5.5 MHz ± 1.1 MHz. These results represent the first step toward the realization of fast integrated circuitry for communications in the terahertz frequency range.
AB - We report the fast amplitude modulation of a quantum cascade laser emitting in single mode operation in the terahertz frequency range by employing compact, integrated devices based on the interplay between plasmonic antenna arrays and monolayer graphene. By acting on the carrier concentration of graphene the optical response of these plasmonic resonances was modified. The modulators characteristics have been studied by using both time domain spectroscopic laser systems, yielding the broad frequency response of these resonant arrays, and quantum cascade lasers, providing us with a narrow and stable laser source, a mandatory prerequisite for the determination of the modulation speed of these devices. The measured modulation speed exhibits a cut-off frequency of 5.5 MHz ± 1.1 MHz. These results represent the first step toward the realization of fast integrated circuitry for communications in the terahertz frequency range.
U2 - 10.1021/acsphotonics.5b00672
DO - 10.1021/acsphotonics.5b00672
M3 - Journal article
VL - 3
SP - 464
EP - 470
JO - ACS Photonics
JF - ACS Photonics
SN - 2330-4022
IS - 3
ER -