Loganathan, Kirubhashni and Ahmad, Harith and Yusoff, Norazriena (2024) Generation of mode-locked pulses assisted by reduced graphene oxide/cerium oxide (rGO/CeO2) embedded in arc-shaped fiber. Physica Scripta, 99 (12). p. 125107. ISSN 0031-8949, DOI https://doi.org/10.1088/1402-4896/ad8b7a.
Full text not available from this repository.Abstract
This study demonstrates the synthesis of a reduced graphene oxide/cerium oxide (rGO/CeO2) composite and its successful use as a saturable absorber (SA) in ultrafast photonics. The rGO/CeO2 composite was synthesized using a facile hydrothermal approach, and an arc-shaped fiber was fabricated using a polishing technique. The arc-shaped fiber employed indirect evanescent field coupling, allowing interaction between the composite material and the laser, and facilitating the generation of mode-locked pulses. An arc-shaped fiber drop-casted with rGO/CeO2 was connected to a 2.0 mu m laser source, achieving a modulation depth of 50.16%. The emitted laser pulses have a duration of 1.428 ps, an operational wavelength of 1904 nm, and a spectral bandwidth of 2.76 nm. The pulse energy was 1.92 nJ with a high signal-to-noise ratio (SNR) of 50 dB. This study introduces rGO/CeO2 embedded in an arc-shaped fiber as an effective SA, exhibiting favorable nonlinear optical absorption in the near 2.0 mu m wavelength region, making it suitable for applications in ultrafast photonics.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education, Malaysia https://doi.org/10.13039/501100003093, Ministry of Education, Malaysia (PRC-2022), HiCoE (GA043B-2023), Ministry of Economy, Malaysia (IIRG001A-2023) ; (IIRG001C-2023), Universiti Malaya |
| Uncontrolled Keywords: | mode-locking; saturable absorber; arc-shape fiber; reduced graphene oxide; cerium oxide; composite |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 17 Mar 2025 03:13 |
| Last Modified: | 17 Mar 2025 03:13 |
| URI: | http://eprints.um.edu.my/id/eprint/47265 |
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