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arXiv · 2403.04288

Monochromatic high-harmonic generation by Bessel-Gauss beam in periodically modulated media

Ondřej Finke·Jan Vábek·Matěj Dvořáček·Lucie Jurkovičová·Martin Albrecht·Hrehorij Ovcharenko·Ondřej Hort·Jaroslav Nejdl
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Abstract

High harmonic generation (HHG) has become a multipurpose source of coherent XUV radiation used in various applications. One of the notable aspects of HHG is its wide spectrum consisting of many harmonic orders. This might represent a bottleneck in HHG utility for applications requiring a single wavelength. We propose a method to generate radiation consisting of a single high-order harmonic frequency employing Bessel-Gauss driving beam and a periodically modulated gaseous medium. We validate it by analytical calculations and numerical simulations. Our method provides a way to generate monochromatic harmonic radiation directly from the source without the need for additional monochromatizing optics. Thus, it represents a substantial enhancement of the flux and simplification of the setup for numerous applications requiring monochromatic short-wavelength radiation.

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Ondřej Finke, Jan Vábek, Matěj Dvořáček, Lucie Jurkovičová, Martin Albrecht, Hrehorij Ovcharenko, Ondřej Hort, Jaroslav Nejdl. 2024-03-07. Monochromatic high-harmonic generation by Bessel-Gauss beam in periodically modulated media. https://doi.org/10.1103/physreva.109.033517

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