期刊
APPLIED PHYSICS LETTERS
卷 94, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3068498
关键词
absorption; carbon nanotubes; fullerenes; nonlinear optics; photon-photon interactions
资金
- NSFC [60708020, 10574075, 20774047]
- Chinese National Key Basic Research Special Fund [2006CB921703, 2006CB932702]
- Research Fund for the Doctoral Program of Higher Education of China [20070055045]
The nonlinear optical properties of graphene oxide (GO) were investigated at 532 nm in nanosecond and picosecond regimes. Results show that two-photon absorption dominates nonlinear absorption process of GO in the case of picosecond pulses, while excited state nonlinearities play an important role in the case of nanosecond pulses. Additionally, we compared nonlinear optical properties of three different dimensional carbon-based materials (two-dimensional graphene, one-dimensional carbon nanotube, and zero-dimensional fullerene) in nanosecond and picosecond regimes, respectively. The nonlinear mechanism of GO is distinctly different from nonlinear scattering of carbon nanotube and excited state nonlinearity of fullerene.
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