Q-switched pulse generation in a bidirectionally pumped EDFL utilizing Lu2O3 as saturable absorber

In this paper, we have successfully demonstrated a Q-switched pulse generation utilizing lutetium oxide (Lu 2 O 3 ) thin film based saturable absorber (SA) in all-fiber erbium-doped fiber laser (EDFL) cavity with a bidirectional pumping. The Lu 2 O 3 powder is mixed with isopropyl alcohol (IPA) solu...

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Bibliographic Details
Published in:Optoelectronics letters 2021-09, Vol.17 (9), p.529-533
Main Authors: Zulkipli, Nur F., Rosol, Ahmad H. A., Sadik, Serif Ali, Durak, Firat E., Altuncu, Ahmet, Yasin, Moh, Harun, Sulaiman W.
Format: Article
Language:English
Subjects:
Absorbers
Doped fibers
Erbium
Fiber lasers
Isopropanol
Lasers
Lutetium
Lutetium oxide
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Polyvinyl alcohol
Pulse duration
Thin films
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Summary:In this paper, we have successfully demonstrated a Q-switched pulse generation utilizing lutetium oxide (Lu 2 O 3 ) thin film based saturable absorber (SA) in all-fiber erbium-doped fiber laser (EDFL) cavity with a bidirectional pumping. The Lu 2 O 3 powder is mixed with isopropyl alcohol (IPA) solution before we add polyvinyl alcohol (PVA) as our host polymer to make the Lu 2 O 3 into a thin film. By inserting the Lu 2 O 3 -PVA thin film into a bidirectional pumped EDFL cavity, a stable Q-switched pulse is realized with repetition rate in a range of rose from 43.67 kHz to 57.74 kHz whereas the pulse width decreased from 14.48 µs to 11.20 µs. This result indicates that the Lu 2 O 3 can be implemented as an SA device in an EDFL as it owns a linear absorption of around 3 dB at 1 567 nm.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-021-1001-x