Mode-locked thulium doped fibre laser with copper thin film saturable absorber

Muhammad, Ahmad Razif and Ahmad, Muhammad Taufiq and Zakaria, Rozalina and Yupapin, Preecha Promphan and Harun, Sulaiman Wadi and Yasin, Moh (2019) Mode-locked thulium doped fibre laser with copper thin film saturable absorber. Journal of Modern Optics, 66 (13). pp. 1381-1385. ISSN 0950-0340, DOI

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We demonstrate the generation of mode-locked Thulium-Doped Fibre Laser by employing a newly developed saturable absorber (SA) based on copper (Cu) thin film. The SA was prepared by depositing nano-sized particles of Cu onto the surface of polyvinyl alcohol (PVA) film through the E-Beam evaporation process. A stable mode-locking pulse train operating at 1951 nm was successfully generated by introducing the Cu PVA SA into a laser cavity. The laser generated a pulse train at the fundamental frequency of 8.5 MHz with a calculated minimum pulse width of 14.8 ps. This demonstration proves that the Cu PVA based SA is suitable for generating mode-locked fibre laser at 2 µm region. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.

Item Type: Article
Funders: University of Malaya [grant number GPF005A-2018]
Uncontrolled Keywords: Mode-locking; copper thin film; passive saturable absorber; fiber laser
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 04 Mar 2020 01:40
Last Modified: 04 Mar 2020 01:40

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