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Fesub.2Osub.3 Nanoparticle-Based Q-Switched Pulse Fiber Laser
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Fesub.2Osub.3 Nanoparticle-Based Q-Switched Pulse Fiber Laser
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Journal Article
Fesub.2Osub.3 Nanoparticle-Based Q-Switched Pulse Fiber Laser
2023
Overview
We demonstrate the utilization of iron oxide (Fe[sub.2]O[sub.3]) as light-absorbing material in an erbium-doped fiber laser (EDFL) for the generation of Q-switched pulses. A sandwich-type saturable absorber (SA) with Fe[sub.2]O[sub.3] nanoparticles between fiber ferrules is proposed. A fiber ferrule tip is tapped onto a cap of index-matching gel, which is then dipped into Fe[sub.2]O[sub.3] nanoparticle powder to allow its deposition through the adhesion effect. By incorporating Fe[sub.2]O[sub.3]–SA in an EDFL, self-started and stable Q-switched pulses are attained at a threshold power of 50.1 mW. The pulse repetition rate is tunable from 9.92 kHz to 22.47 kHz, whereas the pulse duration reduces from 38.4 µs to 13.8 µs with the pump power increment. The maximum pulse energy achieved is 36.9 nJ. This work offers a simple integration method of Fe[sub.2]O[sub.3] nanoparticles as potential SAs for the generation of Q-switched pulses.
Publisher
MDPI AG
Subject
