Zinc phthalocyanine thin film as saturable absorber for Q-switched pulse generation

Rawan S.M. Soboh and Ahmed Hasan Hamood Al-Masoodi and Fuad N.A. Erman and Ahmed Hasan Hamood Al-Masoodi and Hamzah Arof and Moh. Yasin and Sulaiman Wadi Harun (2020) Zinc phthalocyanine thin film as saturable absorber for Q-switched pulse generation. Optical Fiber Technology, 57. ISSN 1068=5200

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Abstract

This paper demonstrated the use of Zinc phthalocyanine (ZnPc) thin film as saturable absorber (SA) to generate Q-switched pulse train in erbium-doped fiber laser (EDFL) cavity. The film was prepared in three methods; ZnPc was embedded into, casted onto and spin-coated onto the polyvinyl alcohol (PVA) film and the samples are referred to embedding ZnPc:PVA, casting ZnPc/PVA, and spin-coating ZnPc/PVA, respectively in this paper. The SA was inserted between two optical fiber ferrules in the laser cavity. The Q-switched fiber laser operates at a wavelength of 1561.4, 1560.4 and 1559.5 nm for embedding ZnPc:PVA, casting ZnPc/PVA, and spin-coating ZnPc/PVA SAs respectively. The pulse repetition rate increases from 25.19 to 48 kHz, 30.3 to 43 kHz, and 21.5 to 32.2 kHz as the pump power rises from 115.8 to 148 mW, 119 to 141 mW, and 109.6 to 135 mW for the SA fabrication methods of ZnPc:PVA, casting ZnPc/PVA, and spin-coating ZnPc/PVA, respectively. However, the pulse width decreases from 8.28 to 3.6 µs for embedding ZnPc:PVA, 10.8 to 4.9 µs for casting ZnPc/PVA, and 12.3 to 6 µs for spin-coating ZnPc/PVA. The results indicate that the ZnPc materials is feasible for use as SA in realizing a reliably stable and flexible Q-switching pulse lasers for 1.5 µm region. The maximum pulse energies are calculated to be 71, 32 and 50 nJ for the three SA fabrication methods of ZnPc:PVA, casting ZnPc/PVA, and spin-coating ZnPc/PVA. To the best of the authors� knowledge, this is the first time ZnPc material is used as a SA device for a stable Q-switched laser pulse operation. © 2020 Elsevier Inc.

Item Type: Article
Additional Information: cited By 1
Uncontrolled Keywords: Coatings; Embeddings; Fiber lasers; Optical fiber fabrication; Optical fibers; Optical pumping; Pulse repetition rate; Q switched lasers; Q switching; Saturable absorbers; Spin coating; Spinning (fibers); Thin films; Zinc; Zinc castings, Erbium doped fiber laser; Fabrication method; Poly (vinyl alcohol) (PVA); Pulse repetition; Q-switched fiber lasers; Q-switched pulse; Switching pulse; Zinc phthalocyanines, Zinc compounds
Subjects: Q Science > QC Physics > QC1-999 Physics
Divisions: Artikel Ilmiah > SCOPUS INDEXED JOURNAL
Creators:
CreatorsNIM
Rawan S.M. SobohUNSPECIFIED
Ahmed Hasan Hamood Al-MasoodiUNSPECIFIED
Fuad N.A. ErmanUNSPECIFIED
Ahmed Hasan Hamood Al-MasoodiUNSPECIFIED
Hamzah ArofUNSPECIFIED
Moh. YasinNIDN0003126704
Sulaiman Wadi HarunUNSPECIFIED
Depositing User: Ika Rudianto
Date Deposited: 03 Feb 2021 05:28
Last Modified: 03 Feb 2021 05:28
URI: http://repository.unair.ac.id/id/eprint/102308
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