Samsamnun, Farina Saffa Mohamad and Zulkipli, Nur Farhanah and Abdul Khudus, Muhammad Imran Mustafa and Shuhaimi, Ahmad and Abdul Majid, Wan Haliza and Harun, Sulaiman Wadi (2019) Nanosecond pulse generation with a gallium nitride saturable absorber. OSA Continuum, 2 (1). pp. 134-141. ISSN 2578-7519, DOI https://doi.org/10.1364/OSAC.2.000134.
Full text not available from this repository.Abstract
A mode-locked nanosecond Erbium-doped fiber laser (EDFL) was demonstrated using gallium nitrate (GaN) in the form of a polished crystal as a saturable absorber (SA). The GaN film exhibited a modulation depth of 2% with a saturable optical intensity of 0.46 MW/cm2. The laser directly produced nanosecond pulses with stable mode-locking operation at a pump threshold of 149.51 mW. The generated output pulses operated at a 1562 nm central wavelength with a pulse duration and a repetition rate of 485 ns and 967 kHz, respectively. The average output power was 3.068 mW at a pump power of 182.34 mW, corresponding to 3.1 nJ single pulse energy. These results indicate that GaN material has a promising application in ultrafast light generation. © 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education (Grant No: LR001A-2016A), University of Malaya (Grant No: RP039C-18AFR) |
| Uncontrolled Keywords: | Fiber lasers; Gallium nitride; III-V semiconductors; Locks (fasteners); Mode-locked fiber lasers; Optical pumping; Pulse repetition rate |
| 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: | 22 Jan 2020 03:41 |
| Last Modified: | 22 Jan 2020 03:41 |
| URI: | http://eprints.um.edu.my/id/eprint/23537 |
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