
1.Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University, 07743 Jena, Thuringia, Germany
2.Chemistry Department, University of California, Berkeley, CA 94720, USA
3.Leibniz Institute of Photonic Technology e.V., 07745 Jena, Thuringia, Germany
4.Otto Schott Institute of Material Research, Abbe Center of Photonics, Friedrich Schiller University, 07743 Jena, Thuringia, Germany
5.Helmholtz Institute Jena, Jena 07743, Thuringia, Germany
C Spielmann, Email: christian.spielmann@uni-jena.de
Published:2017-12,
Published Online:23 August 2017,
Received:09 December 2016,
Revised:09 August 2017,
Accepted:20 August 2017
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Sollapur, R. et al. Resonance-enhanced multi-octave supercontinuum generation in antiresonant hollow-core fibers. Light: Science & Applications, 6, e17124 (2017).
Sollapur, R. et al. Resonance-enhanced multi-octave supercontinuum generation in antiresonant hollow-core fibers. Light: Science & Applications, 6, e17124 (2017). DOI: 10.1038/lsa.2017.124.
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-matched Cherenkov radiations on both sides of the resonance. This effect
along with the dispersion tuning and scaling capabilities of the fiber geometry
enables coherent ultra-broadband and high-energy sources
which range from the UV to the mid‐infrared spectral range.
antiresonant hollow core fiberdispersion designnonlinear opticssoliton dynamicssupercontinuum generation
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