Thin Film for Q-Switching Application in Erbium-Doped Fiber Laser
This study demonstrates the utilization of a Scandium Oxide (Sc2O3 ) film as a passive saturable absorber (SA) for pulse generation within the C-band region in an Erbium-Doped Fiber Laser (EDFL) cavity for possible applications in metrology, sensing, and medical diagnostics. The SA was fabricated...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Fakulti Kejuruteraan ,UKM,Bangi.
2025
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| Online Access: | http://journalarticle.ukm.my/26785/1/32.pdf http://journalarticle.ukm.my/26785/ https://www.ukm.my/jkukm/volume-3701-2025/ |
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| Summary: | This study demonstrates the utilization of a Scandium Oxide (Sc2O3
) film as a passive saturable absorber (SA) for
pulse generation within the C-band region in an Erbium-Doped Fiber Laser (EDFL) cavity for possible applications
in metrology, sensing, and medical diagnostics. The SA was fabricated using Sc2O3
powder, with polyvinyl alcohol
(PVA) employed to form the film. The experimental setup utilized an all-fiber ring cavity configuration. Q-switching
was achieved over a range of pump powers from 48.8 mW to 84.8 mW. It is observed that as the pump power
increased, the repetition rate rose from 42.3kHz to 82.8 kHz, accompanied by a reduction in pulse width from 5.04 μs
to 2.82 μs. At a pump power of 84.8 mW, the system achieved a maximum output power of 6.75 mW and a maximum
pulse energy of 81.6 nJ. The EDFL also has a high signal-to-noise ratio (SNR) at the fundamental frequency which is
55.4 dB, highlighting the stability of the Q-switched pulses. |
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