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arXiv 1605.06320physics.optics
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石墨烯集成波导的微扰理论:立方非线性和三次谐波

Perturbation theory for graphene integrated waveguides: cubic nonlinearity and third harmonic generation

Andrey V. Gorbach, Edouard Ivanov

摘要:

我们提出了微扰理论分析的一般三阶非线性过程中的石墨烯集成光子结构。将石墨烯的光学响应作为麦克斯韦方程组的非线性边界条件。推导出的模型应用于分析三次谐波产生的石墨烯涂层介质微纤维。当在亚毫米长光纤中使用具有$0.1$ nJ量级的能量的亚皮秒泵浦脉冲时,当在石墨烯非线性电导率$\hbarω=(2/3)E_F$的共振附近操作时,预测高达百分之几的效率。

英文摘要:

We present perturbation theory for analysis of generic third-order nonlinear processes in graphene integrated photonic structures. Optical response of graphene is treated as the nonlinear boundary condition in Maxwell equations. The derived models are applied for analysis of third harmonic generation in a graphene coated dielectric micro-fibre. The efficiency of up to few percent is predicted when using sub-picosecond pump pulses with energies of the order of $0.1$nJ in a sub-millimeter long fibre, when operating near the resonance of the graphene nonlinear conductivity $\hbarω=(2/3)E_F$.

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