Thulium-doped fluoride mode-locked fiber laser based on nonlinear polarization rotation

Ahmad, Harith and Azmy, Nur Fatini and Norisham, Nur Farahin and Reduan, Siti Aisyah and Zulkifli, Mohd Zamani (2022) Thulium-doped fluoride mode-locked fiber laser based on nonlinear polarization rotation. Optical and Quantum Electronics, 54 (2). ISSN 0306-8919, DOI

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The generation of passive mode-locked pulses in a thulium-doped fluoride fiber laser (TDFF) through nonlinear polarization rotation (NPR) was proposed and demonstrated. The proposed fiber laser was able to suppress spectral sidebands by controlling the polarization state using polarization controllers incorporated into the cavity. Mode-locked pulses were observed at 1492.6 nm with a 3-dB bandwidth region of 10 nm without any appearance of sidebands. The laser can generate output pulses with pulse widths of 370 fs, peak powers of 1.84 kW, and pulse energies of up to 0.68 nJ. The output pulses have a measured signal-to-noise ratio of 65 dB, indicating good stability when observed over 2 h with no significant wavelength drift or degradation. Furthermore, the proposed design allows for dispersive waves to be successfully filtered out using the NPR effect, making it a highly viable design for generating short mode-locked pulses with high peak powers in the S-band region.

Item Type: Article
Funders: Universiti Malaya [RK021-2019] [RU005-2021], Ministry of Education, Malaysia [(PRC-2014)]
Uncontrolled Keywords: Thulium-doped fluoride fiber; Mode-locking; Optical soliton; Sidebands
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science > Department of Physics
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 05 Aug 2022 00:42
Last Modified: 05 Aug 2022 00:42

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