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Q-switched erbium doped fiber laser using copper nanoparticles polyvinyl alcohol as saturable absorber

Q-switched erbium doped fiber laser using copper nanoparticles polyvinyl alcohol as saturable absorber

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7th Brunei International Conference on Engineering and Technology 2018 (BICET 2018) — Recommend this title to your library

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  • DOI:  10.1049/cp.2018.1600
  • ISBN: 978-1-83953-002-9
  • Location: Bandar Seri Begawan, Brunei
  • Conference date: 12-14 Nov. 2018
  • Format: PDF
The generation of passively Q-switched Erbium-doped fiber laser (EDFL) by using copper nanoparticles polyvinyl alcohol as a passive saturable absorber (SA) was experimentally demonstrated. The copper nanoparticles powder is dissolved in tetrahydrofuran (THF). Then, the end solution was added and mixed thoroughly with polyvinyl alcohol (PVA) suspension to form a thin film based SA and sandwiched between two ferrules in an EDFL cavity. A Q-switched operation was obtained within the pump power range of 8.93mW to 97.6mW. The pulse repetition rate showed an increasing trend from 19.89kHz to 84.0kHz, whereas the pulse width exhibited a decreasing trend from 22.96μs to 4.6μs. The highest pulse energy of 95.8nJ was obtained at pump power of 97.6mW. The signal-to-noise ratio (SNR) of 62dB obtained indicates the stability of the Q-switched pulse generated.

Inspec keywords: laser cavity resonators; copper; optical polymers; Q-switching; optical pulse generation; nanophotonics; optical saturable absorption; fibre lasers; erbium; nanoparticles; optical films; optical pumping

Subjects: Ultrafast optical techniques; Optical saturation and related effects; Fibre lasers and amplifiers; Optical transient phenomena, self-induced transparency, optical saturation and related effects; Laser resonators and cavities; Design of specific laser systems; Laser resonators and cavities; Fibre lasers and amplifiers; Nanophotonic devices and technology; Laser beam modulation, pulsing and switching; mode locking and tuning; Laser beam modulation, pulsing and switching; mode locking and tuning; Nanophotonic devices and technology

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