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Proceedings Paper

Novel approaches to enhance graphene absorption and electro-optic property
Author(s): Kaifeng Shi; Wangshi Zhao; Binying Zhao; Zhaolin Lu
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Paper Abstract

We demonstrate greatly enhanced light absorption by monolayer graphene over a broad spectral range, from visible to near infrared, based on attenuated total reflection (ATR). The designed structure consists of two dielectric media and monolayer graphene between them. Up to 42.7% light absorption has been achieved by this structure. Moreover, when applying electrolyte gel, electric double layers are formed at the graphene-gel interface, which leads to the change of graphene’s electrical properties as well as optical properties. As a result, light absorption of graphene can be manually modulated. This design may help build electro-optic modulators for applications in communications, sensing and spectroscopy.

Paper Details

Date Published: 7 March 2014
PDF: 7 pages
Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 89801C (7 March 2014); doi: 10.1117/12.2039724
Show Author Affiliations
Kaifeng Shi, Rochester Institute of Technology (United States)
Wangshi Zhao, Rochester Institute of Technology (United States)
Binying Zhao, Rochester Institute of Technology (United States)
Zhaolin Lu, Rochester Institute of Technology (United States)


Published in SPIE Proceedings Vol. 8980:
Physics and Simulation of Optoelectronic Devices XXII
Bernd Witzigmann; Marek Osiński; Fritz Henneberger; Yasuhiko Arakawa, Editor(s)

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