Tunable passively Q-switched ultranarrow linewidth erbium-doped fiber laser

Zulkifli, Mohd Zamani and Muhammad, Farah Diana and Mohd Azri, M. F. and Mohd Yusof, M. K. and Hamdan, K. Z. and Samsudin, S. A. and Yasin, Moh (2020) Tunable passively Q-switched ultranarrow linewidth erbium-doped fiber laser. Results in Physics, 16. ISSN 2211-3797

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Abstract

A tunable passively Q-switched erbium-doped fiber laser with ultranarrow linewidth is proposed and demonstrated. With the single wall carbon nanotubes (SWCNTs) as the passive Q-switch, the ultranarrow linewidth laser operation is realized based on spectral filtering effect. using an ultranarrow tunable bandpass filter (UNTBF). The Q-switched laser spectrum is tunable from 1525 to 1561 nm, covering a wavelength range of 36 nm. At 1545 nm, the highest repetition rate of ~38 kHz and the lowest pulse width of 1.15 μs are obtained, with the corresponding pulse energy of approximately 0.18 nJ. The linewidth measurement using self-heterodyne technique yields a linewidth value of 17.5 kHz, which may be the narrowest linewidth for a Q-switched fiber laser to the best of our knowledge.

Item Type:	Article (Journal)
Additional Information:	8870/82213
Uncontrolled Keywords:	Doped fiber laser, Passively Q-switched and erbium, Tunable wavelength, Ultra-narrow linewidth
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr M Z Zulkifli
Date Deposited:	17 Aug 2020 10:33
Last Modified:	17 Aug 2020 10:33
URI:	http://irep.iium.edu.my/id/eprint/82213

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