Continuously wavelength-tunable high harmonic generation via soliton dynamics

TL;DR

This paper demonstrates a method for continuously tuning high harmonic generation in the extreme ultraviolet range by leveraging soliton-induced blue-shifts in a gas-jet system, enabling precise control over emission wavelengths.

Contribution

It introduces a novel approach combining soliton dynamics in a hollow-core fiber with gas-jet interaction for tunable high harmonic generation.

Findings

High harmonics tunable from 17 to 45 eV.

Blue-shift transfer from soliton to harmonics.

Continuous wavelength tuning achieved.

Abstract

We report generation of high harmonics in a gas-jet pumped by pulses self-compressed in a He-filled hollow-core photonic crystal fiber through the soliton effect. The gas-jet is placed directly at the fiber output. As the energy increases the ionization-induced soliton blue-shift is transferred to the high harmonics, leading to a emission bands that are continuously tunable from 17 to 45 eV.