Passively Q-switched 2?m fiber laser with WO3 saturable absorber

Al-Hiti, Ahmed Shakir and Hassan, Hiba and Yasin, M. and Harun, Sulaiman Wadi (2023) Passively Q-switched 2?m fiber laser with WO3 saturable absorber. Optical Fiber Technology, 75. ISSN 1068-5200, DOI

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We have successfully demonstrated a reliable and simple passively Q-switched Thulium-doped fiber laser (TDFL) utilizing tungsten oxide (WO3) as a saturable absorber (SA). The SA film was fabricated by embedding WO3 material into Polyvinyl alcohol (PVA) host polymer. The saturable absorption and saturation intensity of the fabricated WO3-based SA are about 20 % and 0.04 MW/cm2, respectively. The Q-switched TDFL pulses operate at a central wavelength 1960.2 nm with a 3 dB bandwidth of 1.4 nm, pulse duration of 2.32 mu s, maximum repetition rate of 64.27 kHz, maximum output power of 8.2 mW, and maximum pulse energy of 127.58 nJ. To our knowledge, this is the first time that WO3 has been used as a Q-switcher for operation in 2 mu m region.

Item Type: Article
Funders: None
Uncontrolled Keywords: Q-switched; Embedding method; WO3; Thulium-doped fiber laser
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 29 Nov 2023 03:58
Last Modified: 29 Nov 2023 03:58

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