Development of Q-Switcher fiber laser using Tantalum Aluminum Carbide thin film as saturable absorber

Roslan, Muhammad Syazwan Al-Hafiz (2021) Development of Q-Switcher fiber laser using Tantalum Aluminum Carbide thin film as saturable absorber. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Fiber lasers have gotten a lot of attention in recent years as a potential substitute for high cost bulk solid-state lasers. Remote sensing, laser range finding, communication, labelling, micro-machining, biomedical imaging, and medical surgery are just a few of the fields where these lasers could be helpful. Fiber lasers might also create short and ultrashort pulses at kHz and MHz repetition rates, respectively, in Q-switched or mode-locked modes. Because of its high peak power and nanosecond pulse duration, Q-switching fiber lasers are commonly employed for tattoo removal and 3D optical data storage. We show a small, all-fiber Q-switched Erbium-doped fiber laser with a saturable absorber made of tantalum aluminium carbide thin film (SA). However, SA is necessary to create Q-switched in active Q-switched semiconductors. This technique is no longer being researched because of its short operating wavelength and high manufacturing cost. Furthermore, the SA recovery time is longer than the cavity round trip time in passive Q-switched systems since the pulse duration is reliant on the time to deplete the gain once the SA saturates. As the gain medium for the laser cavity, erbium-doped fiber was used. The discovery suggests that tantalum aluminium carbide could be an effective SA for Q-switched lasers operating in the 1.55-14m range. EDF, SMF fiber, splicer, LD, WDM, Isolator, OSA, 90/10 coupler, fiber connection, and excel software were among the materials and equipment used.

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