21 August 2014 Nonlinear optical and optical limiting properties of graphene oxide dispersion in femtosecond regime
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Abstract
The third-order nonlinear optical properties of graphene oxide (GO) dispersion in distilled water were investigated in femtosecond regime, using a single beam z-scan technique. Induced by a focused Gaussian beam (λ~800 nm) with 150 fs pulse duration, the graphene oxide shows strong nonlinear absorption, which was dominated by reverse saturable absorption (RSA), originates from two-photon absorption (TPA) in GO. In addition, the optical limiting performance of GO was experimentally derived, indicating that the occurrence of RSA make GO a candidate for optical limiting. In addition, the further increasing of input intensity would enhance the nonlinear scattering effects in the sample so that the optical limiting threshold was reached.
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Zebo Zheng, Liang Zhu, Fuli Zhao, "Nonlinear optical and optical limiting properties of graphene oxide dispersion in femtosecond regime", Proc. SPIE 9283, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, 92830V (21 August 2014); doi: 10.1117/12.2069886; https://doi.org/10.1117/12.2069886
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