Octave-Spanning Supercontinuum Generation in As2S3–Silica Hybrid Waveguides Pumped by Thulium-Doped Fiber Laser

Vasilii Voropaev, Shangran Xie, Aleksandr Donodin, Daniil Batov, Mikhail Tarabrin, Johann Troles, Vladimir Lazarev

Research output: Contribution to journalArticlepeer-review


Broadband supercontinuum sources are of interest for various applications. The near-infrared region (1–3 μ m) is specifically useful for biomedical diagnostics. One of the promising media for supercontinuum generation in the infrared region is the strongly guiding nonlinear waveguide with an arsenic trisulfide core (As 2 S 3 ) and a fused silica cladding. The geometrical and chemical properties of such a waveguide allow to finely tune the dispersion landscape and nonlinearity through the core diameter variations. Here we report the generation of octave-spanning supercontinuum in As 2 S 3 -silica hybrid nanospike waveguides pumped by a thulium-doped all-fiber femtosecond laser and amplifier system at 1.9 μ m wavelength. The widest supercontinuum was obtained in the wavelength range from 1.1 to 2.5 μ m (full width at -10 dB) in the waveguide with a core diameter of 1.7 μ m. Generation of significant dispersive waves, as well as third harmonics component, is observed. Numerical simulation shows that the generated supercontinua are coherent in the entire spectral range and can be exploited to create a self-referenced laser comb.
Original languageEnglish
Pages (from-to)5116-5122
JournalJournal of Lightwave Technology
Issue number15
Early online date8 Mar 2023
Publication statusPublished - 1 Aug 2023

Bibliographical note

Copyright © 2023. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0

Funding Information:
The work of Vasilii Voropaev and Vladimir Lazarev was supported by Russian Science Foundation under Grant 21-79-10325. The work of Shangran Xie was supported in part by the National Natural Science Foundation of China under Grant 62275021 and in part by Beijing Natural Science Foundation under Grant 4232078.

Publisher Copyright:
© 2023 IEEE.


  • Chalcogenide
  • Laser excitation
  • Optical fiber amplifiers
  • Optical fiber dispersion
  • Optical waveguides
  • Pump lasers
  • Silicon compounds
  • Waveguide lasers
  • nanospike
  • supercontinuum generation
  • thulium-doped fiber lasers


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