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Fluoro-graphene: nonlinear optical properties.
Optics Express
|October 10, 2013
Summary
Graphene fluoride derivatives show significant nonlinear optical properties. Differences in fluorination impact optical behavior and optical limiting capabilities, particularly in DMF dispersion.
Area of Science:
- Materials Science
- Optics and Photonics
- Nanotechnology
Background:
- Graphene derivatives are explored for advanced optical applications.
- Understanding nonlinear optical (NLO) properties is crucial for material development.
- Fluorination of graphene can tune its electronic and optical characteristics.
Purpose of the Study:
- To investigate the third-order nonlinear optical response of graphene fluoride.
- To compare the NLO properties of graphene fluoride in DMF and water.
- To assess the potential of graphene fluoride for optical limiting applications.
Main Methods:
- Utilized picosecond and nanosecond laser excitation at visible (532 nm) and infrared (1064 nm) wavelengths.
- Investigated graphene fluoride dispersed in N,N-Dimethylformamide (DMF).
- Studied fluorosurfactant-stabilized graphene fluoride dispersed in water.
Main Results:
- Both graphene fluoride derivatives exhibited large third-order nonlinear optical responses.
- Significant differences were observed in nonlinear refraction and absorption between the two samples.
- Graphene fluoride in DMF showed broadband optical limiting under nanosecond laser excitation.
Conclusions:
- The degree of fluorination significantly influences the optical and electronic properties of graphene sheets.
- Graphene fluoride in DMF demonstrates potential for optical limiting applications due to its broadband action.
- Further research into fluorinated graphene derivatives could lead to novel photonic devices.
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