Ahmad, Harith and Makhfuz, Maryam Jasmine Mohd and Yusoff, Norazriena and Reduan, Siti Aisyah (2022) Thulium holmium-doped fiber laser mode-locked using Sb2Te3 saturable absorber coated arc-shaped fiber. Infrared Physics & Technology, 125. ISSN 1350-4495, DOI https://doi.org/10.1016/j.infrared.2022.104228.
Full text not available from this repository.Abstract
In this study, the topological insulator (TI) antimony telluride (Sb2Te3) was used as a saturable absorber (SA) to obtain stable mode-locked pulses in a thulium holmium-doped fiber laser (THDFL). A liquid-phase exfoliation (LPE) approach was used to obtain the SA material without chemicals or surfactants. The SA device was prepared by drop-casting the material onto the arc-shaped fiber for integration into the 2.0 mu m laser cavity. The prepared device also exhibits nonlinear absorption properties with normalized modulation depth, saturation intensity, and non-saturable loss of 36.16 %, 0.046 MW/cm(2), and 63.84 %, respectively. Furthermore, stable mode-locked pulses were readily obtained at a pump power of 307.60 mW, where the center wavelength of the laser was recorded to be 1902.06 nm with a full width at half maximum of 2.88 nm. The pulses had a repetition rate of 10.88 MHz and pulse width of 1.32 ps with a signal-to-noise ratio (SNR) value of about 61.21 dB. The results show that Sb2Te3 SA demonstrated excellent performance and can be further explored for future photonics applications.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya [Grant No:RU005-2021], Ministry of Education, Malaysia [Grant No:PRC-2014] |
| Uncontrolled Keywords: | Topological insulator; Antimony telluride; Thulium holmium-doped fiber laser; Mode-locked pulse generation |
| Subjects: | 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 Oct 2023 04:03 |
| Last Modified: | 17 Oct 2023 04:03 |
| URI: | http://eprints.um.edu.my/id/eprint/41940 |
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