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High-order harmonic generation with mu J laser pulses at high repetition rates

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TLDR
In this article, a generalized phase-matching model is proposed for the generation of high-order harmonics using laser pulse energies in the few-μJ range at high repetition rates.
Abstract
We investigate the generation of high-order harmonics using laser pulse energies in the few-μJ range at high repetition rates. We analyse how the conversion efficiency is influenced by the tight focusing geometry required for the generation of high-order harmonics under these conditions. A generalized phase-matching model allows us to discuss macroscopic phase effects independent of focal length. We present experimental results using the example of a 100 kHz laser system to generate harmonics up to the 27th order in Ar with a photon flux up to 3 × 109 photons s−1 into one harmonic order. High-repetition-rate femtosecond or even attosecond light sources open new possibilities for a broad range of applications such as time-resolved photoelectron spectroscopy and microscopy in the extreme ultraviolet regime.

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Citations
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Journal ArticleDOI

High photon flux table-top coherent extreme-ultraviolet source

TL;DR: In this paper, a new table-top coherent extreme ultraviolet (EUV) source based on phase-matched high-harmonic generation using a fiber laser is presented. But the authors did not specify the number of photons in the 25 −40 eV range.
Journal ArticleDOI

Introduction to macroscopic power scaling principles for high-order harmonic generation

TL;DR: In this paper, the authors present an overview of state-of-the-art HHG-based XUV sources, followed by a brief introduction to basic principles underlying HHG and a detailed discussion of macroscopic effects and scaling principles.
Journal ArticleDOI

Absorption-limited and phase-matched high harmonic generation in the tight focusing regime

TL;DR: In this article, the scaling laws for the main physical quantities of high harmonic generation were discussed and the limiting effects of dephasing, absorption and plasma defocusing were analyzed, and it was shown that phase-matched and absorption-limited high-order harmonics can be achieved even for very small focal spot sizes using a target gas provided with an adequately high density.
Journal ArticleDOI

Scale-invariant nonlinear optics in gases

TL;DR: In this article, the scaling principle of nonlinear light-matter interaction in gases was identified and it was shown that paraxial nonlinear wave equations are scale invariant if spatial dimensions, gas density, and laser pulse energy are scaled appropriately.
References
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Journal ArticleDOI

Kinetics and kinematics for translational motions in microgravity during parabolic flight.

TL;DR: The goal is to combine kinetic and kinematic data to examine translational motions during microgravity adaptations to encourage fine-control motions as these reduce the risk of injury and increase controllability.
Journal ArticleDOI

X-Ray Interactions: Photoabsorption, Scattering, Transmission, and Reflection at E = 50-30,000 eV, Z = 1-92

TL;DR: In this article, the atomic scattering factors for all angles of coherent scattering and at the higher photon energies are obtained from these tabulated forward-scattering values by adding a simple angle-dependent form-factor correction.
Journal ArticleDOI

Plasma perspective on strong field multiphoton ionization.

TL;DR: During strong-field multiphoton ionization, a wave packet is formed each time the laser field passes its maximum value, and one important parameter which determines the strength of these effects is the rate at which the wave packet spreads in the direction perpendicular to the laser electric field.
Proceedings Article

Attosecond Physics

TL;DR: In this paper, an attosecond "oscilloscope" was used to visualize the oscillating electric field of visible light with an oscillator and probe multi-electron dynamics in atoms, molecules and solids.
Journal ArticleDOI

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

TL;DR: In this article, the authors present a comprehensive set of FDCSs for single ionization of atoms by ion-impact, the most basic atomic fragmentation reaction, brought new insight, a couple of surprises and unexpected challenges to theory at keV to GeV collision energies.
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