Extended model for optimizing high-order harmonic generation in absorbing gases
Abstract
We report on an extended version of the one-dimensional model proposed by Constant \emph{et al.} [Phys. Rev. Lett 82(8), 1668 (1999)] to study phase matching of high-order harmonic generation in absorbing and dispersive medium. The model - expanded from zeroth to first order - can be used with media having a pressure profile varying linearly with propagation length. Based on the new formulas, the importance of having a generation medium that ends abruptly with a steep pressure gradient for achieving high flux is highlighted. In addition to further rule-of-thumb guidelines for harmonic-flux optimization, it is shown that having a steep increase of pressure in the beginning of the medium increases harmonic flux, while it also decreases the required medium length to reach the absorption-limited maximum.
Cite
@article{arxiv.2112.02376,
title = {Extended model for optimizing high-order harmonic generation in absorbing gases},
author = {Balázs Major and Katalin Varjú},
journal= {arXiv preprint arXiv:2112.02376},
year = {2022}
}
Comments
20 pages, 5 figures, corrected Fig. 3(b) label