2018年9月13日 · While high–harmonic generation from gases, and more recently also from solids, has been extensively studied, there is little data on HHG from liquids. Here, Luu et al. experimentally demonstrate ...

High-harmonic generation (HHG) is a non-linear process during which a target (gas, plasma, solid or liquid sample) is illuminated by an intense laser pulse. Under such conditions, the sample will emit the high order harmonics of the generation beam (above the fifth harmonic). Due to the coherent nature of the process, high-harmonics generation is …

2020年9月14日 · Here, we present a fully-quantum theory of extreme nonlinear optics, predicting quantum effects that alter both the spectrum and photon statistics of HHG, thus departing from all previous approaches.

2019年1月8日 · ABSTRACT Interaction of intense lasers with solid materials offers an alternative way to achieve high-order harmonic generation (HHG). Since the underlying mechanisms of the harmonic emission remain uncertain, a large number of theoretical studies have been proposed to explain the experimental findings in this fast-growing field. Here, we review the primary numerical methods and present a ...

2022年1月28日 · Abstract and Figures High-harmonic generation (HHG) in solids has emerged in recent years as a rapidly expanding and interdisciplinary field, attracting attention from both the condensed-matter ...

2024年10月1日 · 高次谐波发生（High Harmonic Generation, HHG）是一种非线性光学现象，它允许科学家们将红外或可见光激光转换成更高频率（如紫外或X射线）的光。这一技术对于探索物质内部的超快电子动力学过程至关重要，因为它提供了一种产生阿秒（10^-18秒）脉冲的方法，从而可以实时观察电子运动。

基于超快强激光与物质相互作用的高次谐波产生 (high-order harmonic generation, HHG)提供了非微扰区光与物质相互作用的研究平台, 同时也是台式化极紫外光源和阿秒脉冲的主要产生途径. 非微扰区固体HHG涉及超快强场物理、凝聚态物理、材料科学和信息科学等领域的核心内容, 自2011年首次在实验中观察到 ...

2024年12月12日 · 高次谐波（High Harmonics Generation, HHG）是指通过光与物质相互作用，将入射激光转换为数倍于激光频率的强相干辐射。它也是产生阿秒激光脉冲的最常用方法之一。近年来，基于固体的HHG迅速发展，成为超快科学的重要前沿。利用HHG探索固体材料特性引起了阿秒科学和强场凝聚态物理领域的极大关注 ...

2021年11月16日 · High-harmonic generation (HHG) in solids has emerged in recent years as a rapidly expanding and interdisciplinary field, attracting attention from both the condensed-matter and the atomic, molecular, and optics communities. It has exciting prospects for the engineering of new light sources and the probing of ultrafast carrier dynamics in solids, and the theoretical understanding of this ...

1. 高次谐波辐射(high harmonic generation,HHG)强场激光聚焦到气体介质上的时候，会发生非线性效应，比如：阈上电离，高次谐波辐射。高次谐波辐射是指：得到的辐射谱的频率是基频驱动场的整数倍， 也就是频率为 \\…