High-power Soliton-induced Supercontinuum Generation and Tunable Sub-10-fs VUV Pulses from Kagome-lattice HC-PCFs

TL;DR

This paper proposes a theoretical method using kagome lattice hollow-core photonic crystal fibers filled with noble gases to generate high-power, tunable, sub-10-fs UV/VUV pulses through soliton-induced supercontinuum generation, achieving broad spectra and high coherence.

Contribution

It introduces a novel approach leveraging kagome lattice HC-PCFs filled with noble gases for efficient supercontinuum generation and tunable UV/VUV pulse production, surpassing standard fibers in power and spectral range.

Findings

Achieves two-octave broad spectra with high coherence.

Generates tunable UV/VUV pulses from 350 nm to 120 nm.

Produces sub-10-fs pulses with microjoule energies.

Abstract

We theoretically study a novel approach for soliton-induced high-power supercontinuum generation by using kagome lattice HC-PCFs filled with a noble gas. Anomalous dispersion and broad-band low loss of these fibers enable the generation of two-octave broad spectra by fs pulses, with high coherence and high spectral peak power densities up to five orders of magnitude larger than in standard PCFs. In addition, up to 20 percents of the output radiation energy forms a narrow UV/VUV band, which can be tuned by contolling the pressure in the range from 350 nm to 120 nm. In the temporal domain this corresponds to sub-10-fs UV/VUV pulses with pulse energy of few tens of microjoule, caused by the formation of a high-order soliton emitting non-solitonic radiation.