Single mode D-shape optical fiber structures as 2D material saturable absorber for pulsed fiber laser generation

Ng, Yi Hen (2024) Single mode D-shape optical fiber structures as 2D material saturable absorber for pulsed fiber laser generation. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project explores the transformative potential of utilizing MAX phase Ti₄AlN₃ as a saturable absorber in the generation of pulsed fiber lasers. MAX phase materials, renowned for their unique combination of metallic and ceramic properties, present promising characteristics for saturable absorption. The focus on Ti₄AlN₃ stems from its composition—four atoms of titanium, one of aluminium, and three of nitrogen—providing exceptional thermal stability, mechanical strength, and electrical conductivity. The study achieves a significant milestone in fabricating D-shaped optical fibers tailored for MAX phase incorporation. The meticulous process involves creating a MAX phase solution by blending polyvinyl alcohol (PVA) and Ti₄AlN₃, followed by depositing this solution onto polished D-shaped fibers, laying the foundation for inducing pulsed fiber laser generation. The project's methodology includes theoretical analyses, numerical simulations, and experimental characterizations to comprehensively evaluate Ti₄AlN₃ as a saturable absorber. Employing a 2.4 m Erbium-doped fiber laser setup, the results demonstrate the feasibility and efficacy of Ti₄AlN₃ in inducing Q-switched pulses, showcasing its potential for high-performance pulsed fiber lasers. This research not only contributes to advancing fiber laser technology but also opens avenues for applications in diverse fields, ranging from industrial manufacturing to telecommunications and medical devices.

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