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Optical field terahertz amplitude modulation by graphene nanoribbons

AutorZhang, Hong; Miyamoto, Yoshiyuki; Cheng, Xinlu; Rubio, Angel
Fecha de publicación2015
EditorRoyal Society of Chemistry (Great Britain)
CitaciónNanoscale 7(45): 19012-19017 (2015)
ResumenIn 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.
URIhttp://hdl.handle.net/10261/136574
DOI10.1039/C5NR05889A
Identificadoresdoi: 10.1039/C5NR05889A
e-issn: 2040-3372
issn: 2040-3364
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