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

Nur F. Zulkipli; Ahmad H. A. Rosol; Serif Ali Sadik; Firat E. Durak; Ahmet Altuncu; Moh Yasin; Sulaiman W. Harun

doi:10.1007/s11801-021-1001-x

Optoelectronics Letters ›› 2021, Vol. 17 ›› Issue (9) : 529 -533. DOI: 10.1007/s11801-021-1001-x

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

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Abstract

In this paper, we have successfully demonstrated a Q-switched pulse generation utilizing lutetium oxide (Lu₂O₃) thin film based saturable absorber (SA) in all-fiber erbium-doped fiber laser (EDFL) cavity with a bidirectional pumping. The Lu₂O₃ powder is mixed with isopropyl alcohol (IPA) solution before we add polyvinyl alcohol (PVA) as our host polymer to make the Lu₂O₃ into a thin film. By inserting the Lu₂O₃-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 Lu₂O₃ can be implemented as an SA device in an EDFL as it owns a linear absorption of around 3 dB at 1 567 nm.

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Nur F. Zulkipli, Ahmad H. A. Rosol, Serif Ali Sadik, Firat E. Durak, Ahmet Altuncu, Moh Yasin, Sulaiman W. Harun. Q-switched pulse generation in a bidirectionally pumped EDFL utilizing Lu₂O₃ as saturable absorber. Optoelectronics Letters, 2021, 17(9): 529-533 DOI:10.1007/s11801-021-1001-x

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