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Single attosecond pulse generation for a dielectric driven by mid-infrared laser field

机译:由中红外激光场驱动的电介质产生单个阿秒脉冲

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We the oretically investigate the high-order-harmonic generation (HHG) from solids by simulating the dynamics of a single active electron in a dielectric. Interband tunnelling is investigated, by which the harmonic generation can be modeled based on the classical trajectory analysis of electron-hole pairs. The supercontinuum region of the fundamental HHG plateau, whose intensity is about seven order magnitude enhancement as compared with that of the second plateau, is used in the generation of isolated attosecond pulses. Thus, it provides us a practical way to increase the conversion efficiency of HHG with laser intensity below the damage threshold.
机译:我们通过模拟电介质中单个活性电子的动力学,从理论上研究固体的高次谐波产生(HHG)。研究了带间隧穿,可以基于电子-空穴对的经典轨迹分析对谐波产生进行建模。基本HHG高原的超连续谱区域,其强度比第二高原的强度增强了约7个数量级,用于产生孤立的阿秒脉冲。因此,它为我们提供了一种在激光强度低于损伤阈值时提高HHG转换效率的实用方法。

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