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Mode-locking in holmium doped fiber laser operating at 2.06 µm using manganese violet

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Abstract

In this letter, we demonstrated mode-locking in a holmium-doped fiber laser (HDFL) using manganese violet (MV) drop-casted on an arc-shaped fiber as the saturable absorber (SA). The MV solution was prepared using the hydrothermal method. The HDFL was pumped with a compact in-house thulium-doped fiber laser operating at 1943 nm, delivering a continuous wave (CW) output of up to 2 W. Mode-locking was successfully generated at the pump power of 1.2 W by integrating the MV-SA into the ring cavity. The pulses obtained were centered at a wavelength of 2067.4 nm, with a repetition rate of 4.41 MHz and a pulse duration of 3.05 ps. The signal-to-noise ratio (SNR) measured was 42.1 dB. This work is the first to use a material-based SA on an arc-shaped fiber to generate mode-locking in an HDFL. It will hopefully spur further research on exploring other two-dimensional (2D) materials to generate short pulses at the longer wavelength near 2.1 µm.

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Acknowledgements

This work was funded by the Ministry of Higher Education, Malaysia, through grant HiCoE (PRC-2022) and Universiti Malaya through grants IIRG001A-2023 and IIRG001B-2023.

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The authors have not disclosed any funding.

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H. Ahmad: Supervision, Conceptualization, Resources, Writing – review & editing. K. Kamaruzzaman : Investigation, Data collection, Data analysis, Writing – original draft. M Z. Samion: Supervision, Methodology, Writing – original draft. M. U. M. Ithnahaini: Investigation, Data collection, Writing – review. M. Z. Zulkiflii: Conceptualization, Validation, Writing – review & editing. All authors reviewed the manuscript.

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Correspondence to H. Ahmad.

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Ahmad, H., Kamaruzzaman, K., Samion, M.Z. et al. Mode-locking in holmium doped fiber laser operating at 2.06 µm using manganese violet. Opt Quant Electron 56, 1091 (2024). https://doi.org/10.1007/s11082-024-07019-w

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  • DOI: https://doi.org/10.1007/s11082-024-07019-w

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