Ahmad, Harith and Kahar, Nor Hidayah Abdul and Yusoff, Norazriena and Samion, Muhamad Zharif and Reduan, Siti Aisyah and Ismail, Mohammad Faizal and Bayang, Leonard and Wang, Yu and Wang, Siyi and Sahu, Jayanta K. (2022) Passively Q-switched 1.3 mu m bismuth doped-fiber laser based on transition metal dichalcogenides saturable absorbers. Optica Fiber Technology, 69. DOI https://doi.org/10.1016/j.yofte.2022.102851.
Full text not available from this repository.Abstract
In this work, Q-switched fiber laser has been demonstrated in a bismuth-doped fiber laser (BDFL) system using tungsten ditelluride (WTe2) and tungsten disulfide (WS2) as saturable absorbers (SAs). The solution casting method was used to prepare both WTe2 and WS2 thin films SAs. At the threshold pump power, the generation of Q-switched pulse using WTe2 SA resulted in a pulse width of 10.4 mu s and a repetition rate of 21.20 kHz. When the pump power was increased to maximum, the pulse width reduced to 8.0 mu s, while the repetition rates increased to 22.46 kHz. Similarly, a Q-switched pulse was generated using WS(2 )SA, with an initial repetition rate of 18.86 kHz and a pulse width of 14.4 mu s. The repetition rate of the pulses then increased to 19.53 kHz and pulse width reduced to 11.2 mu s with the increasing pump power. The maximum pulse energy obtained for WTe2 and WS2 SAs was 13.93 nJ and 11.36 nJ, respectively, with a maximum average output power of 0.313 mW (WTe2) and 0.222 mW (WS2). This work uses the transition metal dichalcogenides (TMDs) materials to generate Q-switched pulses in BDFL operating at 1.3 mu m region.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya [Grant No:RU005-2021], Universiti Malaya [Grant No:RK021-2019], Universiti Malaya [Grant No:TOP100PRC] |
| Uncontrolled Keywords: | Saturable absorber; Tungsten ditelluride; Tungsten disulfide; Q-switching; Bismuth-doped fiber |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 04 Oct 2023 08:15 |
| Last Modified: | 04 Oct 2023 08:15 |
| URI: | http://eprints.um.edu.my/id/eprint/43010 |
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