2018年9月13日 · High–harmonic generation (HHG) in gases has been the main enabling technology of attosecond science since its discovery. Recently, HHG from solids has been demonstrated,...

2025年2月27日 · High-harmonic generation (HHG) in solids has emerged as a powerful method for probing ultrafast electronic dynamics within crystalline structures. In this study, we employed extreme ultraviolet (XUV) high-harmonic interferometry with phase-locked XUV pulse pairs to investigate excitation-induced bandgap dynamics in solids.

2021年11月16日 · We provide an overview ranging from a detailed description of different approaches to calculating the microscopic dynamics and how these are intricately connected to the description of the crystal structure, through the conceptual understanding of HHG in solids as supported by the semiclassical recollision model, and finally a brief description ...

2021年5月19日 · High-order harmonic generation (HHG) in solids 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 is a dramatic manifestation of strong-field light–matter interaction: an atomically...

2018年11月19日 · Building on this simple picture, gas-phase HHG has formed the basis of attosecond science, which includes probing molecular orbitals 6,7, generation of isolated attosecond pulses 8 and attosecond...

2017年3月16日 · High-order-harmonic generation (HHG) results from the interaction of ultrashort laser pulses with matter. It configures an invaluable tool to produce attosecond pulses, moreover, to extract electron structural and dynamical information of …

Measure the complex dynamics in materials relevant for EUV lithography and understand how to improve them. Unique feature of HHG-XANES: Simultaneous exposure and spectrally resolved absorption spectroscopy in the XUV with chemical sensitivity. Objective: Measure exposure kinetics as function of dose in photoresists.

2002年7月19日 · Ponderomotive potential (cycle averaged kinetic energy of a free electron in an electric field E0 and frequency 0). Ip + 3.2 Up = 24.6 eV + 192 eV 220 eV of HHG in He.

2025年1月7日 · High harmonic generation (HHG) is a nonlinear process in which systems driven by an intense laser emit integer harmonics of the driving field. Here we report that the strong nonlinear response of systems with isolated bound states split the HHG spectrum into nonharmonic Mollow-type triplets that reveal the internal electronic dynamics.

2024年2月19日 · High-order harmonic generation (HHG) in gases is frequently used nowadays to produce attosecond pulses and coherent radiation in the visible-to-soft X-ray spectral range. HHG in solids is a natural extension of the idea of HHG in gases, and its first observation about ten years ago opened the door to investigations on attosecond electron ...