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首页> 外文会议>Conference on Laser Optics 2000: Ultrafast Optics and Superstrong Laser Fields Jun 26-30, 2000, St. Petersburg, Russia >About possibility of formation of shock electromagnetic waves on optical cycle due to generation of higher harmonics
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About possibility of formation of shock electromagnetic waves on optical cycle due to generation of higher harmonics

机译：关于由于产生高次谐波而在光周期上形成冲击电磁波的可能性

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There is considered formation and propagation of shock electromagnetic waves (SEW) of visible spectral range as possible nonlinear optical phenomenon taking place at laser intensities characteristic of femtosecond laser interaction with transparent solids. Main regularities of SHEW formation are studied on the basis of ID model of plane-wave propagation in isotropic dielectric with nonlinear optical response. Special attention is paid to influence of color dispersion and absorption on SEW formation and propagation. Necessary conditions for appearing of SHEW are obtained, in particular, threshold amplitude is estimated. There is presented a model for numerical study of SHEW formation and propagation influenced by dispersion of linear and nonlinear parts of refractive index. Using the simulation, we studied dynamics of SHEW formation on several optical cycles near leading edge of femtosecond laser pulse propagating in transparent medium. Important observed features of SHEW are discussed.
机译：飞秒激光与透明固体相互作用的激光强度特征认为，可见光谱范围的冲击电磁波（SEW）的形成和传播是可能的非线性光学现象。基于平面波在各向同性介质中具有非线性光学响应的​​ID波模型，研究了SHEW形成的主要规律。要特别注意颜色分散和吸收对SEW形成和传播的影响。获得了出现SHEW的必要条件，尤其是估计了阈值幅度。提出了一个模型，用于数值研究线性和非线性折射率散布对SHEW形成和传播的影响。通过仿真，我们研究了飞秒激光脉冲在透明介质中传播前沿附近几个光学循环上SHEW形成的动力学。讨论了SHEW的重要观察特征。

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