Resonance-enhanced multi-octave supercontinuum generation in antiresonant hollow-core fibers

Light, Science & Applications
Rudrakant SollapurChristian Spielmann

Abstract

Ultrafast supercontinuum generation in gas-filled waveguides is an enabling technology for many intriguing applications ranging from attosecond metrology towards biophotonics, with the amount of spectral broadening crucially depending on the pulse dispersion of the propagating mode. In this study, we show that structural resonances in a gas-filled antiresonant hollow core optical fiber provide an additional degree of freedom in dispersion engineering, which enables the generation of more than three octaves of broadband light that ranges from deep UV wavelengths to near infrared. Our observation relies on the introduction of a geometric-induced resonance in the spectral vicinity of the ultrafast pump laser, outperforming gas dispersion and yielding a unique dispersion profile independent of core size, which is highly relevant for scaling input powers. Using a krypton-filled fiber, we observe spectral broadening from 200 nm to 1.7 μm at an output energy of ∼ 23 μJ within a single optical mode across the entire spectral bandwidth. Simulations show that the frequency generation results from an accelerated fission process of soliton-like waveforms in a non-adiabatic dispersion regime associated with the emission of multiple phase-ma...Continue Reading

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Citations

Aug 31, 2018·Optics Letters·Kay SchaarschmidtMarkus A Schmidt
Feb 7, 2018·Optics Express·Mario ChemnitzMarkus A Schmidt
Mar 4, 2020·Optics Express·Xue QiMarkus A Schmidt
Jun 19, 2020·Optics Express·Xiaokang LianYuliya Semenova
Sep 11, 2019·Optics Express·Xiang ChenJinyan Li
Nov 22, 2018·Applied Optics·Nikhil JayakumarChristian Spielmann
Dec 17, 2020·Optics Letters·Trivikramarao GavaraWonkeun Chang
Mar 7, 2021·Scientific Reports·Ramona ScheibingerMarkus A Schmidt
Jul 17, 2021·Optics Express·Saher JunaidMarkus A Schmidt
Jan 18, 2022·Advanced Science·Tilman A K LühderMarkus A Schmidt

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