Bright coherent ultrahigh harmonics in the keV x-ray regime from mid-infrared femtosecond lasers

T Popmintchev, MC Chen, D Popmintchev, P Arpin… - science, 2012 - science.org
High-harmonic generation (HHG) traditionally combines~ 100 near-infrared laser photons to
generate bright, phase-matched, extreme ultraviolet beams when the emission from many …

Optical waveform synthesis and its applications

G Cirmi, RE Mainz, MA Silva‐Toledo… - Laser & Photonics …, 2023 - Wiley Online Library
The quest for ever‐shorter optical pulses has been ongoing for over half a century. Although
few‐cycle pulses have been generated for nearly 40 years, pulse lengths below the single …

High-flux soft x-ray harmonic generation from ionization-shaped few-cycle laser pulses

AS Johnson, DR Austin, DA Wood, C Brahms… - Science …, 2018 - science.org
Laser-driven high-harmonic generation provides the only demonstrated route to generating
stable, tabletop attosecond x-ray pulses but has low flux compared to other x-ray …

Phase matching and quasi-phase matching of high-order harmonic generation—a tutorial

L Hareli, G Shoulga, A Bahabad - Journal of Physics B: Atomic …, 2020 - iopscience.iop.org
In this tutorial we discuss the macroscopic aspects of the extreme nonlinear frequency
conversion process of high-order harmonic generation. For most, this entails describing the …

Spatiotemporal coupling of attosecond pulses

H Wikmark, C Guo, J Vogelsang… - Proceedings of the …, 2019 - National Acad Sciences
The shortest light pulses produced to date are of the order of a few tens of attoseconds, with
central frequencies in the extreme UV range and bandwidths exceeding tens of …

[HTML][HTML] Bright high-repetition-rate source of narrowband extreme-ultraviolet harmonics beyond 22 eV

H Wang, Y Xu, S Ulonska, JS Robinson… - Nature …, 2015 - nature.com
Novel table-top sources of extreme-ultraviolet light based on high-harmonic generation yield
unique insight into the fundamental properties of molecules, nanomaterials or correlated …

Phase-matching for generation of isolated attosecond xuv and soft-x-ray pulses with few-cycle drivers

J Schötz, B Förg, W Schweinberger, I Liontos… - Physical Review X, 2020 - APS
Isolated attosecond pulses (IAPs) produced through laser-driven high-harmonic generation
(HHG) hold promise for unprecedented insight into physical, chemical, and biological …

Multi-mJ, kHz, 2.1 μm optical parametric chirped-pulse amplifier and high-flux soft x-ray high-harmonic generation

KH Hong, CJ Lai, JP Siqueira, P Krogen, J Moses… - Optics letters, 2014 - opg.optica.org
We report on a multi-mJ 2.1 μm optical parametric chirped-pulse amplification (OPCPA)
system operating at 1 kHz repetition rate, pumped by a picosecond cryogenic Yb: YAG laser …

Decoherence and revival in attosecond charge migration driven by non-adiabatic dynamics

DT Matselyukh, V Despré, NV Golubev, AI Kuleff… - Nature physics, 2022 - nature.com
Attosecond charge migration is a periodic evolution of the charge density at specific sites of
a molecule on a timescale defined by the energy intervals between the electronic states …

Water-window soft x-ray high-harmonic generation up to the nitrogen K-edge driven by a kHz, 2.1 μm OPCPA source

GJ Stein, PD Keathley, P Krogen, H Liang… - Journal of Physics B …, 2016 - iopscience.iop.org
We report the generation of coherent water-window soft x-ray harmonics in a neon-filled
semi-infinite gas cell driven by a femtosecond multi-mJ mid-infrared optical parametric …