Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Graphene-based optical modulator realized in metamaterial split-ring resonators operating in the THz frequency range
AU - Degl'Innocenti, Riccardo
AU - Jessop, David S.
AU - Shah, Yash D.
AU - Sibik, Juraj
AU - Zeitler, Axel
AU - Kidambi, Piran R.
AU - Hofmann, Stephan
AU - Beere, Harvey E.
AU - Ritchie, David A.
PY - 2014/3/7
Y1 - 2014/3/7
N2 - The integration of quantum cascade lasers with devices capable of efficiently manipulating terahertz light, represents a fundamental step for many different applications. Split-ring resonators, sub-wavelength metamaterial elements exhibiting broad resonances that are easily tuned lithographically, represent the ideal route to achieve such optical control of the incident light. We have realized a design based on the interplay between metallic split rings and the electronic properties of a graphene monolayer integrated into a single device. By acting on the doping level of graphene, an active modulation of the optical intensity was achieved in the frequency range between 2.2 THz and 3.1 THz, with a maximum modulation depth of 18%.
AB - The integration of quantum cascade lasers with devices capable of efficiently manipulating terahertz light, represents a fundamental step for many different applications. Split-ring resonators, sub-wavelength metamaterial elements exhibiting broad resonances that are easily tuned lithographically, represent the ideal route to achieve such optical control of the incident light. We have realized a design based on the interplay between metallic split rings and the electronic properties of a graphene monolayer integrated into a single device. By acting on the doping level of graphene, an active modulation of the optical intensity was achieved in the frequency range between 2.2 THz and 3.1 THz, with a maximum modulation depth of 18%.
KW - Graphene
KW - Metamaterial
KW - Opto-Electronics
KW - Terahertz
KW - Time-Domain Spectroscopy
U2 - 10.1117/12.2037270
DO - 10.1117/12.2037270
M3 - Journal article
AN - SCOPUS:84901750932
VL - 8985
JO - Proceedings of SPIE
JF - Proceedings of SPIE
SN - 0277-786X
M1 - 89851E
T2 - Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VII
Y2 - 4 February 2014 through 6 February 2014
ER -