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108 fs high-power mode locked double-clad ytterbium-doped fiber laser using FePS3 saturable absorber

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Abstract

Femtosecond fiber lasers with a high peak power are of great interest due to their various real-world applications. This work uses a double-clad ytterbium-doped fiber (DC-YDF) as the gain medium to successfully generate mode-locked pulses with a high peak power of hundreds of kilowatts at the 1 μm wavelength. The pulse width of the mode-locked pulses was as short as 108 fs, with a fundamental frequency of 1.9 MHz. The highest average power output, energy pulse, and peak power of the mode-locked pulses were 114.5 mW, 58.4 nJ, and 540.7 kW, respectively. The mode-locked fiber laser operates at a center wavelength of 1052 nm with normal net-cavity dispersion, which shows characteristics of a dissipative soliton. The mode-locked pulses exhibit good stability, as demonstrated by the measurement of the signal-to-noise ratio (SNR) of 40 dB. It is the very first instance of high-power short pulses mode-locked in the 1 μm range being shown utilizing a DC-YDF with a two-dimensional (2D) material-based saturable absorber (SA) into the laser cavity.

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Acknowledgements

This work was supported by the Ministry of Higher Education, Malaysia [PRC-2022] and Universiti Malaya [BKS002-2023 and IIRG001B-2023].

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H.A.: Supervision, conceptualization, Writing – review & editing, Resources. M.A.M.L: Investigation, data collection, data analysis, Writing – original draft. M.Z.S: Supervision, Methodology, Writing – original draft. M.K.A.Z: Conceptualization, Validation.

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Correspondence to H. Ahmad.

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Ahmad, H., Lutfi, M., Samion, M. et al. 108 fs high-power mode locked double-clad ytterbium-doped fiber laser using FePS3 saturable absorber. Opt Quant Electron 56, 825 (2024). https://doi.org/10.1007/s11082-024-06693-0

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  • DOI: https://doi.org/10.1007/s11082-024-06693-0

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