Fe[sub.2]O[sub.3] Nanoparticle-Based Q-Switched Pulse Fiber Laser

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...

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Bibliographic Details
Published in:Photonics 2023-08, Vol.10 (9)
Main Authors: Muhammad, Farah Diana, Chyi, Josephine Liew Ying, Mohd Asran, Anom Nazirah, Alresheedi, Mohammed Thamer, Ng, Eng Khoon, Mahdi, Mohd Adzir
Format: Article
Language:English
Subjects:
Equipment and supplies
Fiber optics
Lasers
Optical instruments
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Summary: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.
ISSN:2304-6732
DOI:10.3390/photonics10090995