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Three-wave mixing of ordinary and backward electromagnetic waves: extraordinary transients in the nonlinear reflectivity and parametric amplification

机译:普通和反向电磁波的三波混合:非线性反射率和参数放大中的非凡瞬变

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摘要

Three-wave mixing of ordinary and backward electromagnetic waves in a pulsed regime is investigated in the metamaterials that enable the coexistence and phase-matching of such waves. It is shown that the opposite direction of phase velocity and energy flux in backward waves gives rise to extraordinary transient processes due to greatly enhanced optical parametric amplification and frequency up-and down-shifting nonlinear reflectivity. The differences are illustrated through comparison with the counterparts in ordinary, co-propagating settings. (C) 2016 Optical Society of America
机译:在超材料中研究了普通电磁波和反向电磁波在脉冲状态下的三波混合,这些材料能够使电磁波共存和相位匹配。结果表明,由于大大提高了光学参量放大和频率上移和下移非线性反射率,反向波中相速度和能量通量的相反方向引起了异常的瞬态过程。通过与普通的共同传播设置中的对应项进行比较来说明差异。 (C)2016美国眼镜学会

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