Q-switched fiber laser generation using a D-shaped titanium aluminum carbonitride saturable absorber

Ab Rahman, Mohd Fauzi and Zaim Zaini, Muhammad Aizat and Abdul Latiff, Anas and Baharom, Mohamad Faizal and Harun, Sulaiman Wadi (2026) Q-switched fiber laser generation using a D-shaped titanium aluminum carbonitride saturable absorber. Journal of Modern Optics, 73 (10). pp. 848-857. ISSN 0950-0340

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Abstract

We demonstrated a stable dual-wavelength Q-switched fiber laser using a Ti3Al(C0.5, N0.5)2-PVA saturable absorber (SA) deposited on a D-shaped fiber, generating pulses at 1531.36 and 1558.38 nm. The fabricated SA exhibited a modulation depth of 19.6% and a saturation intensity of 0.07 MW/cm². Integrated into the laser cavity, the SA enabled Q-switching over a pump power range of 38–75 mW, with repetition rates increasing from 35.3 kHz to 51.9 kHz and pulse widths narrowing from 6.58 µs to 3.57 µs. A high signal-to-noise ratio of 50 dB confirmed pulse stability. The laser achieved a maximum output power of 5.7 mW and pulse energy of 84.75 nJ. These results highlight Ti3Al(C0.5, N0.5)2 as a promising SA for compact, efficient pulsed fiber lasers operating around 1.55 µm.

Item Type:	Article
Uncontrolled Keywords:	D-shaped fiber, Dual-wavelength, Fiber laser, MAX phase, Passive saturable absorber
Divisions:	Faculty Of Electronics And Computer Technology And Engineering
Depositing User:	Sabariah Ismail
Date Deposited:	20 Jul 2026 08:11
Last Modified:	20 Jul 2026 08:11
URI:	http://eprints.utem.edu.my/id/eprint/30148
Statistic Details:	View Download Statistic

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