CUED Publications database

Graphene-enabled electrically controlled terahertz spatial light modulators.

Kakenov, N and Takan, T and Ozkan, VA and Balcı, O and Polat, EO and Altan, H and Kocabas, C (2015) Graphene-enabled electrically controlled terahertz spatial light modulators. Opt Lett, 40. pp. 1984-1987.

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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: Article
Uncontrolled Keywords: Electricity Electrodes Graphite Light Terahertz Radiation
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 22 Mar 2018 01:27
Last Modified: 24 Nov 2020 11:54
DOI: 10.1364/OL.40.001984