Graphene-based optical modulator realized in metamaterial split-ring resonators operating in the THz frequency range

Degl'Innocenti, R., Jessop, D. S., Shah, Y. D. , Sibik, J., Zeitler, A., Kidambi, P. R., Hofmann, S., Beere, H. E. and Ritchie, D. A. (2014) Graphene-based optical modulator realized in metamaterial split-ring resonators operating in the THz frequency range. Proceedings of the SPIE: The International Society for Optical Engineering, 8985, 89851E. (doi:10.1117/12.2037270)

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Abstract

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%.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Shah, Mr Yash Diptesh
Authors: Degl'Innocenti, R., Jessop, D. S., Shah, Y. D., Sibik, J., Zeitler, A., Kidambi, P. R., Hofmann, S., Beere, H. E., and Ritchie, D. A.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Proceedings of the SPIE: The International Society for Optical Engineering
Publisher:Society of Photo-optical Instrumentation Engineers
ISSN:0277-786X
ISSN (Online):1996-756X
Published Online:07 March 2014

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