Najm, Mustafa Mohammed and Zhang, Pei and Al-Azzawi, Alabbas A. and Abdullah, Mohammed Najm and Yasin, Moh and Harun, Sulaiman Wadi (2023) Sodium carbonate modulated ultrashort mode-locked stretched pulses in an erbium-doped fiber laser. Applied Optics, 62 (26). pp. 7008-7016. ISSN 1559-128X, DOI https://doi.org/10.1364/AO.497988.
Full text not available from this repository.Abstract
In this paper, we propose a new, to the best of our knowledge, saturable absorber (SA) based on sodium carbonate (Na2CO3) for producing an ultrafast mode-locked stretched pulse in a passively erbium-doped fiber laser at near-zero dispersion. The solid film of a Na2CO3-SA was fabricated by the drop-casting method using polyvinyl alcohol as a host polymer. The modulation depth of the proposed SA, which was measured by a balanced twin detector technique, was 2.3% with saturation intensity of 181 MW/cm2. The mode-locking operation of the EDFL-based Na2CO3-SA was observed at a pump power of 117 mW. A stable stretched pulse was generated by using the proposed Na2CO3-SA. The laser can generate pulses with a repetition rate and duration of 1.87 MHz and 820 fs, respectively, within a bandwidth of 6.6 nm. The single pulse energy reaches up to 5 nJ, which is equivalent to the average output power of 9.3 mW. Finally, to the best of our knowledge, this is the first report on using the Na2CO3-SA for generating a stretched-pulse mode-locked fiber laser. (c) 2023 Optica Publishing Group
| Item Type: | Article |
|---|---|
| Funders: | Hunan Provincial Education Department (22A0544), Science and Technology Program of Hunan Province (2021RC5012) |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering > Department of Electrical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 08 Sep 2025 02:17 |
| Last Modified: | 08 Sep 2025 02:17 |
| URI: | http://eprints.um.edu.my/id/eprint/50648 |
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