基于液体水产生太赫兹波的有质动力分析

Ponderomotive Force Analysis of Terahertz Generation in Liquid Water

理解由液体水产生太赫兹波的物理机理对进一步发展液体太赫兹源至关重要。有质动力偶极子的形成是太赫兹波产生的核心。为了分析介质中准自由电子所受的有质动力,本文采用了飞秒击穿模型来描述激光和介质的交互过程。本文通过有质动力分析计算仿真了太赫兹产生的过程,最终仿真结果与实验结果相符。

Understanding the physics of terahertz wave generation from water is imperative for developing liquid THz sources.The formation of ponderomotive force-induced dipole is at the heart of the terahertz generation mechanism.In order to analyze the ponderomotive force experienced by the quasi-free electrons,a femtosecond breakdown model is employed.In this work,the terahertz generation process was numerically simulated and the numerical simulation results reproduce the experimental data.