Work

Spatial Aberrations in High-Order Harmonic Generation

Year: 2023

Type: article

Abstract: We investigate the spatial characteristics of high-order harmonic radiation generated in argon and observe cross-like patterns in the far field. An analytical model describing harmonics from an astigmatic driving beam reveals that these patterns result from the order and generation position-dependent divergence of harmonics. Even small amounts of driving field astigmatism may result in cross-like patterns, coming from the superposition of individual harmonics with spatial profiles elongated in different directions. By correcting the aberrations using a deformable mirror, we show that fine-tuning the driving wavefront is essential for optimal spatial quality of the harmonics.

Source: Ultrafast Science

DOI: 10.34133/ultrafastscience.0054

Authors: Marius Plach, Federico Vismarra, Elisa Appi, Vénus Poulain, Jasper Peschel, Peter Smorenburg, David P. O’Dwyer, Stephen Edward, Yin Tao, Rocío Borrego-Varillas, Mauro Nisoli, Cord L. Arnold, Anne L’Huillier, Per Eng-Johnsson

Institutions: Lund University, Istituto di Fotonica e Nanotecnologie, National Research Council, Politecnico di Milano, ASML (Netherlands)

Language: English

Topic: Laser-Matter Interactions and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Wallenberg Center for Quantum Technology, Chalmers University of Technology, H2020 European Research Council

Awards: Ultrafast dynamics in intermolecular energy transfer: elementary processes in aerosols and liquid chemistry, G3602689422, Lund Attosecond Science Center, Attosecond electron-nuclear dynamics studied using intense XUV and X-ray laser pulses, High repetition rate and high photon energy attosecond pulse sources for time-resolved spectroscopy and imaging

OpenAlex ID: W4390328811

FWCI: 1.145

Cites: 41

Cited by: 10

Related to: 10