The smallness of the velocity \(v\) of laser-field-induced motion of electrons compared to the speed of light c is one of the fundamental physical factors limiting the efficiency of nonlinear optical processes in plasma media. It has been shown in this work that the use of intense ultrashort mid-infrared pulses makes it possible to significantly enhance a wide class of \(v{\text{/}}c\)-weak plasma nonlinearities primarily related to plasma currents induced by the laser field. This allows implementing laser plasma schemes of the efficient generation of coherent broadband terahertz and microwave radiation, i.e., terahertz–microwave supercontinuum.

中文翻译：

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兆瓦以下中红外脉冲场中等离子体非线性的增强和微波-太赫兹超连续谱的产生

与光速c相比，激光场诱导的电子运动的速度\（v \）的小是限制等离子体介质中非线性光学过程效率的基本物理因素之一。在这项工作中已经表明，使用强超短中红外脉冲可以显着增强宽范围的\（v {\ text {/}} c \）-弱的等离子体非线性，其主要与感应的等离子体电流有关通过激光场。这可以实现有效产生相干宽带太赫兹和微波辐射（即太赫兹-微波超连续谱）的激光等离子体方案。