Pure gold saturable absorber for generating Q-switching pulses at 2 µm in Thulium-doped fiber laser cavity

Muhammad, Ahmad Razif and Zakaria, Rozalina and Ahmad, Muhammad Taufiq and Wang, Pengfei and Harun, Sulaiman Wadi (2019) Pure gold saturable absorber for generating Q-switching pulses at 2 µm in Thulium-doped fiber laser cavity. Optical Fiber Technology, 50. pp. 23-30. ISSN 1068-5200, DOI https://doi.org/10.1016/j.yofte.2019.02.010.

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Official URL: https://doi.org/10.1016/j.yofte.2019.02.010


We experimentally demonstrate Q-switched Thulium-doped fiber laser operating at 1949.19 nm using pure gold saturable absorber (Au-SA) as a Q-switcher. The Au-SA was fabricated by depositing gold particles molecules using electron beam evaporation on the surface of a polyvinyl alcohol (PVA) film. Subsequently, stable Q-switched pulses were obtained within the 1552 nm pump power range from 343.1 to 467.3 mW, with repetition rate tuned from 11.7 kHz to 21.95 kHz. At 467.3 mW pump power, the TDFL produced pulses train with the pulse width of 2.6 μs and the maximum pulse energy of 89.8 nJ. These results propose that pure gold could be a promising saturable absorber for pulse generation in 2 µm wavelength region. © 2019

Item Type: Article
Funders: University of Malaya (Grant No. FG006-17AFR), National Key R&D Program of China ( 2016YFE0126500 ), National Natural Science Foundation of China ( 61575050 ), Key Program for Natural Science Foundation of Heilongjiang Province of China ( ZD2016012 ), Open Fund of the State Key Laboratory on Integrated Optoelectronics ( IOSKL2016KF03 )
Uncontrolled Keywords: Q-switching; Thulium-doped fiber laser; Pure gold saturable absorber
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 01:44
Last Modified: 04 Mar 2020 01:44
URI: http://eprints.um.edu.my/id/eprint/23948

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