Sharbirin, Anir Syazwan and Ahmad, Harith and Ismail, Mohammad Faizal (2020) Q-switched Thulium-doped fiber laser at 1860 nm and 1930 nm using a Holmium-doped fiber as an amplified spontaneous emission filter. Optics & Laser Technology, 123. p. 105908. ISSN 0030-3992, DOI https://doi.org/10.1016/j.optlastec.2019.105908.
Full text not available from this repository.Abstract
This work demonstrates an all fiber, passively Q-switched Thulium-doped fiber (TDF) laser with a center operating wavelength at 1860 nm and 1930 nm. The laser initially generates an output at ~1930 nm which is then shifted to ~1860 nm by integrating a Holmium-doped fiber (HDF) into the cavity to serve as an amplified spontaneous emission filter. Q-switching operation is achieved using a molybdenum tungsten disulfide or MoWS2 thin film acting as a passive optical modulator. At 1930 nm, the generated Q-switched laser has a high repetition rate of 66.3 kHz and a narrow pulse width of 2.1 µs. After the Holmium-filter is employed, the wavelength shifts to 1860 nm while still retaining a modulated output with a maximum repetition rate of 48.9 kHz as well as narrowest pulse width of 2.3 µs. This work demonstrates the use of the absorption characteristics of HDF to access the shorter wavelength region of the TDF. © 2019 Elsevier Ltd
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education, Malaysia under the Grants LRGS (2015) NGOD/UM/KPT and GA 010-2014 (ULUNG), University of Malaya under the Grants RU 013-2018 , UMRGPRC2019, HiCoE Phase II Funding |
| Uncontrolled Keywords: | Thulium; Holmium; Q-switched; 1.8 µm; Fiber laser |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Science > Department of Physics Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 24 Jun 2020 02:42 |
| Last Modified: | 24 Jun 2020 02:42 |
| URI: | http://eprints.um.edu.my/id/eprint/24963 |
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