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 |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Shah, Dr 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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