Kakenov, N., Takan, T., Ozkan, V. A., Balci, O., Polat, E. O., Altan, H. and Kocabas, C. (2015) Graphene-enabled electrically controlled terahertz spatial light modulators. Optics Letters, 40(9), pp. 1984-1987. (doi: 10.1364/OL.40.001984) (PMID:25927764)
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Abstract
In this Letter, we demonstrate a broadband terahertz (THz) spatial light modulator using 5×5 arrays of large area graphene supercapacitors. Our approach relies on controlling spatial charge distribution on a passive matrix array of patterned graphene electrodes. By changing the voltage bias applied to the rows and columns, we were able to pattern the THz transmittance through the device with high modulation depth and low operation voltage. We anticipate that the simplicity of the device architecture with high contrast THz modulation over a broad spectral range could provide new tools for THz imaging and communication systems.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Polat, Dr Emre Ozan |
| Authors: | Kakenov, N., Takan, T., Ozkan, V. A., Balci, O., Polat, E. O., Altan, H., and Kocabas, C. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Optics Letters |
| Publisher: | Optical Society of America |
| ISSN: | 0146-9592 |
| ISSN (Online): | 1539-4794 |
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