READ ME File For 'Dataset for Numerical Modelling of Pump-Wavelength Dependence of High Harmonic Generation Efficiency'

Dataset DOI: https://doi.org/10.5258/SOTON/D1601 

Date that the file was created: Feb 2022

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GENERAL INFORMATION
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ReadMe Author: Peter Horak, University of Southampton [OPTIONAL add ORCID ID]

Date of data collection: 2019-2020

Funding: EPSRC Centre for Doctoral Training in Next Generation Computational Modelling

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SHARING/ACCESS INFORMATION
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Licenses/restrictions placed on the data, or limitations of reuse: CC BY license

This dataset supports the publication:
AUTHORS: Samual M Senior, William S. Brocklesby, Peter Horak
TITLE: Numerical Modelling of Pump-Wavelength Dependence of High Harmonic Generation Efficiency
CONFERENCE: SPIE Photonics Europe, 6-10 Apr 2020, Online Only, France; Proc. SPIE 11358, 1135815 (2020) 
PAPER DOI IF KNOWN: https://doi.org/10.1117/12.2554554 

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METHODOLOGICAL INFORMATION
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The data contains the results of numerical simulations. The methods are described in the conference paper.

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DATA & FILE OVERVIEW
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The files in this dataset contain the raw simulation results of large-scale computer simulations of the generation of high harmonic radiation in an argon-filled capillary and their propagation to the end of the capillary.

Data processing to produce the results of the conference presentation involves straightforward integration of the output radiation spectra and fitting of these integrals with potentials of the pump wavelength lambda, as detailed in the presentation.

All data files are in HDF5 file format, containing more detailed information about the structure of the data, simulation parameters, and the full data. HDF5 is an open source data structure that can easily be read in many programming languages e.g. Python, Matlab, etc.

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FILES
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UXH_1W.h5, UXH_3W.h5:

Propagation of high harmonics through capillary for laser pump powers of 1W and 3W, respectively.

Each file contains 
Datagroups for laser pump wavelengths 400nm; 800nm, 900nm, 1000nm, ...2000nm
Spectral amplitude of high harmonic output at the end of the capillary at 8290 energies at 158 radial points in Dataset 'HH_A_w', variables 'r' and 'i' for real and imaginary part of the amplitude.


XNLO_1W_1.h5, XNLO_1W_2.h5, ...XNLO_1W_10.h5,
XNLO_3W_1.h5, XNLO_3W_2.h5, ...XNLO_3W_10.h5:

Spectrum of high harmonic radiation emitted through the acceleration of electrons under the impact of a laser pulse at 1W and 3W average laser power, respectively. 10 files for each of the two laser powers.

Files contain Datagroups for laser wavelengths 400nm-2000nm in steps of 5nm, spectra at 100,000 energies at 158 radial points each.

These spectra are used for the results on "single atom" and "sheet of atoms" in the presentation.