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Design rules for phase-matched terahertz surface electromagnetic wave generation by optical rectification in a nonlinear planar waveguide

机译:在非线性平面波导中通过光整流产生相位匹配的太赫兹表面电磁波的设计规则

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摘要

The theory of guided waves in metal-dielectric planar multilayer structures is applied to reduce the loss and maximize optical nonlinearity for efficient terahertz-field generation in a surface electromagnetic wave by femtosecond laser pulses confined in a (chi)~((2)) nonlinear planar waveguide. For typical parameters of thin-film polymer waveguides and metal-dielectric interfaces, the optimal size of the (chi)~((2)) waveguide core providing the maximum efficiency of terahertz plasmon-field generation is shown to be less than the wavelength of the optical pump field.
机译:应用金属-电介质平面多层结构中的导波理论来减少损耗并最大化光学非线性,以通过限制在(chi)〜((2))非线性中的飞秒激光脉冲在表面电磁波中高效生成太赫兹场平面波导。对于薄膜聚合物波导和金属电介质界面的典型参数,提供最大太赫兹等离子体激元场产生效率的(chi)〜((2))波导核的最佳尺寸小于波长。光泵领域。

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