L-band Q-switched fiber laser with gallium/thulium-doped silica fiber saturable absorber


Abdul Rashid, Hairul Azhar and Mustapha Kamil, Y. and Mahdi, M. A. and Lau, K. Y. and Mansoor, A. and Ker, P. J. and Yasin, S. Z. M. (2019) L-band Q-switched fiber laser with gallium/thulium-doped silica fiber saturable absorber. Optics and Laser Technology, 119. ISSN 0030-3992

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An L-band Q-switched fiber laser was demonstrated using gallium/thulium-doped silica fiber saturable absorber. At 10 cm in length, the saturable absorber generated Q-switched fiber laser at a pump power threshold of 39.6 mW and a central wavelength of 1601.93 nm. Beyond 53.3 mW, a spectrum with a central wavelength at 1602.00 nm was generated. On the other hand, the pulse repetition rate was obtained from 3.44 to 7.47 kHz whereas the pulse width reduces from 100.2 to 58.6 µs for pump power ranges from 39.6 to 53.3 mW. Within this range, the pulse energy is attained between 0.2600 and 0.2843 µJ, at a laser power slope efficiency of 6.94%. The constantly operated Q-switched fiber laser over 50 min observation time at 53.3 mW pump power ensures the feasibility of this pulse laser source as a practical device.

Item Type: Article
Uncontrolled Keywords: Gallium
Subjects: T Technology > TN Mining engineering. Metallurgy > TN799.5-948 Nonmetallic minerals
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Suzilawati Abu Samah
Date Deposited: 07 Jan 2022 00:43
Last Modified: 07 Jan 2022 00:43
URII: http://shdl.mmu.edu.my/id/eprint/8942


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