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Issue 45, 2015
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Optical field terahertz amplitude modulation by graphene nanoribbons

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Abstract

In this study, first-principles time-dependent density functional theory calculations were used to demonstrate the possibility to modulate the amplitude of the optical electric field (E-field) near a semiconducting graphene nanoribbon. A significant enhancement of the optical E-field was observed 3.34 Å above the graphene nanoribbon sheet, with an amplitude modulation of approximately 100 fs, which corresponds to a frequency of 10 THz. In general, a six-fold E-field enhancement could be obtained, which means that the power of the obtained THz is about 36 times that of incident UV light. We suggest the use of semiconducting graphene nanoribbons for converting visible and UV light into a THz signal.

Graphical abstract: Optical field terahertz amplitude modulation by graphene nanoribbons

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Publication details

The article was received on 28 Aug 2015, accepted on 09 Oct 2015 and first published on 30 Oct 2015


Article type: Paper
DOI: 10.1039/C5NR05889A
Citation: Nanoscale, 2015,7, 19012-19017
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    Optical field terahertz amplitude modulation by graphene nanoribbons

    H. Zhang, Y. Miyamoto, X. Cheng and A. Rubio, Nanoscale, 2015, 7, 19012
    DOI: 10.1039/C5NR05889A

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