Degl’Innocenti, R., Jessop, D. S., Shah, Y. D. , Sibik, J., Zeitler, J. A., Kidambi, P. R., Hofmann, S., Beere, H. E. and Ritchie, D. A. (2014) Terahertz optical modulator based on metamaterial split-ring resonators and graphene. Optical Engineering, 53(5), 057108. (doi: 10.1117/1.OE.53.5.057108)
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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, subwavelength 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 and 3.1 THz, with a maximum modulation depth of 18%.
| Item Type: | Articles |
|---|---|
| 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, J. 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: | Optical Engineering |
| Publisher: | Society of Photo-optical Instrumentation Engineers |
| ISSN: | 0091-3286 |
| ISSN (Online): | 1560-2303 |
| Published Online: | 28 May 2014 |
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